What Is an HTML PDF Viewer? Generally, you often worry when someone doesn't view the PDF files because either their web browsers don’t have the appropriate plugin to display it or your plugins aren't well-compatible with their computer or browsers. Sometimes, you may need to view the PDF files on an HMTL5 website, hence, in those cases, you'll require having them embedded into an HTML PDF Viewer. Few web browsers like Google Chrome already has a built-in plugin that acts a default HTML PDF Viewer, while Internet Explorer and Firefox do not have such default plugins. So, your PDF files may not display accurately if you're using any other browsers apart from Chrome.
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Your farm won't be damaged since you skip the day because of sickness.Contributed By: Blu3B0mb3r.#Free 1,000 GoldTo find 1,000 gold, press 'A' up against the dresser by your bed.Get more Sunny DaysThe following works only if you have NOT gotten all the building expansions. After that, get yourself sick by fishing or cutting stumps. Avoid the damage of hurricane.If it is raining or snow the day before the storm, then do the work you have to do. The next day, you'll get sick, and skip the day because of sickness. Harvest moon 1 gbc rom download free.
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Once, you have uploaded your files to the VeryPDF, now you'll need to enter your APIKEY. APIKEY is a unique identifier that you should have obtained on the VeryPDF Online web page.3. In this step, you'll need to choose the proper mode for conversion. You can choose either Flash Paper Viewer mode or the HTML5 Paper Viewer mode to proceed the conversion further.3. This is the last step. Here, you'll click on Upload and Convert button and then wait until the conversion is successfully completed. And within a few minutes, the conversion will be properly done.View PDF in HTML by the Best Desktop PDF ViewerApart from using an online PDF Viewer, if you're looking for another appropriate solution, then using a desktop PDF Viewer can be apt for you.
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Select the desired PDF file & import it into this tool. That's all, and your PDF file should be opened.On Mac: Once, you've successfully installed the software on your Mac, open the file & move it into the Applications folder. Now navigate to Launchpad & run the PDFelement on your Mac. Then click on 'Open File' button, select the proper PDF file and finally click on 'Open' button.Step 2 Convert PDF to HTML Using PDFelementOn Windows:.1. Click on the 'To Others' button in the 'Home' tab.2. Choose 'Convert to HTML' in the dropdown menu.3.
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Set the output format for your PDF file by clicking on 'To HTML'.3. Then a settings menu will appear on the right side.
You can enable OCR operation and set page range. When you get all of this done, click on the 'Convert' button to start the process. Step 3: View Converted PDF in HTMLOn Windows: Once the PDF file is successfully converted, open the file or the folder under which the final converted file is present. Now, open this output HTML File & copy all content of this file. Next, just paste this content into another HTML file where you want to view this converted PDF file. And, that's it.
Now, you will be able to view PDF in HTML.On Mac: Just open the final converted HTML file, select all the contents & copy it. Next, open another HTML file & paste the copied content into it.
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Most programming languages contain good and bad parts, but JavaScript has more than its share of the bad, having been developed and released in a hurry before it could be refined. This authoritative book scrapes away these bad features to reveal a subset of JavaScript that's more reliable, readable, and maintainable than the language as a whole-a subset you can use to cre Most programming languages contain good and bad parts, but JavaScript has more than its share of the bad, having been developed and released in a hurry before it could be refined. This authoritative book scrapes away these bad features to reveal a subset of JavaScript that's more reliable, readable, and maintainable than the language as a whole-a subset you can use to create truly extensible and efficient code.Considered the JavaScript expert by many people in the development community, author Douglas Crockford identifies the abundance of good ideas that make JavaScript an outstanding object-oriented programming language-ideas such as functions, loose typing, dynamic objects, and an expressive object literal notation. Unfortunately, these good ideas are mixed in with bad and downright awful ideas, like a programming model based on global variables.When Java applets failed, JavaScript became the language of the Web by default, making its popularity almost completely independent of its qualities as a programming language. In JavaScript: The Good Parts, Crockford finally digs through the steaming pile of good intentions and blunders to give you a detailed look at all the genuinely elegant parts of JavaScript, including:SyntaxObjectsFunctionsInheritanceArraysRegular expressionsMethodsStyleBeautiful featuresThe real beauty?
As you move ahead with the subset of JavaScript that this book presents, you'll also sidestep the need to unlearn all the bad parts. Of course, if you want to find out more about the bad parts and how to use them badly, simply consult any other JavaScript book.With JavaScript: The Good Parts, you'll discover a beautiful, elegant, lightweight and highly expressive language that lets you create effective code, whether you're managing object libraries or just trying to get Ajax to run fast. If you develop sites or applications for the Web, this book is an absolute must.
I think of this book as the JavaScript equivalent to 'The C Programming Language,' so if you happen to have learned C from that book, chances are I think of this book as the JavaScript equivalent to 'The C Programming Language,' so if you happen to have learned C from that book, chances are you'll like this one too.I had to read the chapters on objects, functions and inheritance about six times each until I finally got it, but that was totally doable because the book is so short, and in the end I had a very firm grasp on the language. Returning to serious JS programming after a long hiatus.
When you pick up the rhino book (O'Reilly's definitive tome on JS) and thumb through it, you notice that it is written from the perspective of JS being introduced to the industry. It's all functional programming, browser-oriented, and thought of as an API to 'make the monkey dance', rather than a serious programming language.This book takes the opposite view in nearly every way. It's written from the perspective of someone who has lived wi Returning to serious JS programming after a long hiatus. When you pick up the rhino book (O'Reilly's definitive tome on JS) and thumb through it, you notice that it is written from the perspective of JS being introduced to the industry.
It's all functional programming, browser-oriented, and thought of as an API to 'make the monkey dance', rather than a serious programming language.This book takes the opposite view in nearly every way. It's written from the perspective of someone who has lived with Javascript from the outset and knows where it comes from. It's almost like reading the best practices of a person who has raised a child with a complicated mental condition, someone who has taken the time and care to find out the child's behaviour problems, how to avoid them, and then focussed on what the child knows and does well, and somehow brought that child into a lifestyle that works for everybody involved.I'll admit, I do not have this kind of love for Javascript. If I had my druthers, the entire specification would have been burned to the ground and started again with something closer to python. HOWEVER, as needs must, the devil will drive, and this book does an excellent job of shaking hands with the devil.In some ways, though, it's a book on the philosophy of Javascript, on a particular perspective and ruleset that engenders good practice. To explain further, I would simply be quoting from the Introduction, since Crockford does an excellent job of explaining exactly what he's doing with this book and why.
It's a slim volume, and like another O'Reilly title, 'Mastering Regular Expressions', it's got one of the highest value-for-word ratios of any book in the field.Sometimes I get asked by people coming into the industry, or trying to move from traditional programming into web development, what they should concentrate on to learn what they need to know in order to do quality web work. For front-end work, I used to point them in the direction of jQuery and Underscore to begin, and then on to Angular or another of the equally handy dev environments. I think from now on, I'm going to say 'read this first, before you do anything.' It's really that good. Crockford's book is already considered one of the classic JS books and I agree. Not because its complete (it only touches ECMAScript core, not even DOM), or particularly good at making things seem simple (it probably makes them look overcomplicated).
Its because it approaches JavaScript in a completely different way than probably any other book you've read. It broadens your horizons as a JS developer, makes you think differently. And as soon as you finish it, you haven't only learned a few facts Crockford's book is already considered one of the classic JS books and I agree. Not because its complete (it only touches ECMAScript core, not even DOM), or particularly good at making things seem simple (it probably makes them look overcomplicated). Its because it approaches JavaScript in a completely different way than probably any other book you've read.
It broadens your horizons as a JS developer, makes you think differently. And as soon as you finish it, you haven't only learned a few facts about how the language works (these might even be very few), your way of thinking about it was evolved.It's one of the few books (esp. At the time it was written) that approached JavaScript with respect (and constructive criticism), and not as a toy language suitable only for silly effects and form validation. This makes it perfect for hardcore programmers trying to learn the language, but I would never recommend it to a programming newbie.On the downside, apart from the aforementioned drawbacks, it doesn't provide rational arguments for everything the author tries to promote as a best practice and not all of those are that obviously a 'best practice' (I remember having objections with some), some of them seem just his own personal preference.
For an experienced developer who’s hacked things together while glancing at an online reference, JavaScript: The Good Parts seems like a good place to start learning the language properly. As the title indicates, the book consists of Crockford’s opinions about how to use JavaScript’s better features and avoid the bad ones.
Being a relative JS novice, it’s hard for me to evaluate his judgements, but I’m glad to now have at least someone’s best practices to work with. Crockford’s descriptions of J For an experienced developer who’s hacked things together while glancing at an online reference, JavaScript: The Good Parts seems like a good place to start learning the language properly. As the title indicates, the book consists of Crockford’s opinions about how to use JavaScript’s better features and avoid the bad ones. Being a relative JS novice, it’s hard for me to evaluate his judgements, but I’m glad to now have at least someone’s best practices to work with.
Crockford’s descriptions of JavaScript’s odder (crummier) features were entertaining. My reading notes include items like, “typeof NaN 'number' yields true. Derp.”JavaScript’s syntax looks familiar to most programmers, but this can lead to incorrect assumptions about how it works. For instance, JavaScript uses curly brace-delimited blocks (like Java), but does not use block-level scoping. You can access object properties using a dot notation that looks like a method call (e.g., 'object.foo'), but JavaScript doesn’t really support methods in the classical object-oriented sense. If studied carefully, this book can probably save you some time spent staring at while scratching your head.This book is short and easy to read, but developers who've never touched JavaScript at all or who are new to programming for the Web should probably learn from some other book before reading this one.
I don't think the importance of JavaScript in our current world can be overstated. Nor can the work of Douglas Crockford to legitimize JavaScript by extracting and promoting subsets of the language which are brilliantly designed. In the case of JSON, he recognized JavaScript's object notation as a wonderful and concise way to describe data structures. In my opinion, JSON is vastly superior to XML in every way.I came to this book after watching Crockford's wonderful companion lecture at Google Te I don't think the importance of JavaScript in our current world can be overstated. Nor can the work of Douglas Crockford to legitimize JavaScript by extracting and promoting subsets of the language which are brilliantly designed. In the case of JSON, he recognized JavaScript's object notation as a wonderful and concise way to describe data structures. In my opinion, JSON is vastly superior to XML in every way.I came to this book after watching Crockford's wonderful companion lecture at Google Tech Talks.
It's about 45 minutes long if you skip the introduction and the Q&A at the end. It's full of dry humor and some very sound advice. I highly recommend you search for it and watch it now (it's on YouTube currently, under the title 'JavaScript: The Good Parts').However, this book was not quite what I was hoping it would be. It's short, which is always nice. And it certainly presents itself like a timeless classic (think, The C Programming Language aka 'The White Book').
But I think it misses its true destiny by a wide margin. Unfortunately, The Good Parts is currently more like a miss-mashed collection of facts and techniques than a true learning narrative.My case in point: Chapter 10 is entitled, 'Beautiful Features' and is just over two pages long. It describes the impetus for the book and Crockford's previous experience creating of a subset of JavaScript containing just the good parts.
He made the subset sound very nice, indeed, and I was really looking forward to learning the subset. I figured this was going to be the big payoff for slogging through the previous 9 chapters of dense language specifics and techniques.But when I turned the page, I found that Chapter 10 is the end of the book! (If you don't count the appendixes.) There was no concise summary of the JavaScript subset containing only the good parts. And then in stunned silence, I realized that the previous nine chapters were the good parts. I had completely failed to extract the small, beautiful language from the assorted facts I had been presented.I don't believe the failing is all mine.
The book isn't quite right. But I do believe it could be fixed.Chapter 10 should be the very first chapter. The second chapter should be a summary of the 'good parts' subset. And the rest of the book should be a teaching guide to the subset - teaching it from the ground up as if the Good Parts was a new, exciting programming language all its own. But it doesn't read that way at all.This book is still a very important read-through for anyone who writes JavaScript on a frequent basis.
You're likely to learn many things about JavaScript you never truly understood before. This book would work as a reference, and I do keep it around for that purpose. But truthfully, it's usually far easier to look up specific topics on the web when I'm actually developing.I believe this book could have ushered in a whole new age of JavaScript understanding to developers new and experienced alike. It could have become a time-worn classic in the way that The White Book is. But it's currently not. Currently, it would only confuse beginners and is too unfocused for even advanced programmers.
What a shame.By the way, Appendix A, 'Awful Parts' is great. It should stay exactly as it is: an explanation of the horrific JavaScript features that are most definitely NOT the good parts.:-). As an experienced JavaScript programmer, I was looking around for introductory books for my friends who are just starting their programming journeys so this book came up in the usual lists of modern JavaScript books.This book was a huge disappointment. The authors ability to turn even simple concepts into confusing railroad diagrams coupled with explanations that do not make any sense even to someone well versed in the subject is absolutely astounding.It feels like the book doesn't quite know w As an experienced JavaScript programmer, I was looking around for introductory books for my friends who are just starting their programming journeys so this book came up in the usual lists of modern JavaScript books.This book was a huge disappointment. The authors ability to turn even simple concepts into confusing railroad diagrams coupled with explanations that do not make any sense even to someone well versed in the subject is absolutely astounding.It feels like the book doesn't quite know what it wants to be. It starts with a disclaimer of not being intended for beginners and then proceeds to spend a long time explaining the syntax for white-space, strings, numbers, if statements and while loops - concepts anyone with even a few hours of programming experience would be familiar with. Once it gets to more advanced material, it equally fails by introducing the concepts in a way that is unintelligible even to someone who already understands the ideas in depth.Novices should steer clear from this one while those with already some programming or JavaScript experience would be much better served by something like Effective JavaScript by David Herman.
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I don't understand the consistently high rating this book gets. While the concept is excellent - filet-o-javascript - the execution has serious failings.It starts well with the early chapters but as soon as it reaches the the more challenging stuff - clousures and prototypical inheritance - I found myself having to reach for the superior 'Object-Oriented JavaScript' to understand what was being described each time.I don't care how many times you re-read it - per the author's admonition at the be I don't understand the consistently high rating this book gets.
Many programming books are funny because their authors make jokes. Comes to mind. Javascript: The Good Parts, however, is the first programming book that has ever made me laugh out loud when the author wasn't telling a joke. Case in point:undefined and NaN are not constants. They are global variables, and you can change their values. That should not be possible, and yet it is. Don't do it.Any developer who has ever written Javascript is likely to have been confound Many programming books are funny because their authors make jokes.
Comes to mind. Javascript: The Good Parts, however, is the first programming book that has ever made me laugh out loud when the author wasn't telling a joke. Case in point:undefined and NaN are not constants.
They are global variables, and you can change their values. That should not be possible, and yet it is. Don't do it.Any developer who has ever written Javascript is likely to have been confounded by a number of its pitfalls, and in many cases I think one's first instinct is to assume that you've done something wrong. Crockford clarifies that Javascript's heritage as the language of the web browser gives it a number of unique deformities, and he labels them as such pretty unambiguously.
Honesty makes it easier for developers to move forward and write better code.Chapter 5, on Inheritance, was the most helpful in terms of understanding how to write large applications in a way that provides most of the niceties (clean syntax, encapsulation, etc.) that we've come to expect from high-level languages.I just wish he'd gotten there sooner. Despite being a relatively short book, and despite its title, Good Parts spends more time than I expected on explaining the bad patterns. I suppose it's worthwhile for readers to have a deeper understanding of the language as a whole, but — for example — I know a lot more now that I ever knew before about classical constructors in Javascript, and yet I will probably never use them if I follow Crockford's advice.I also found the overall organization to be a little strange. The appendices take up nearly a third of the book, and provide some of the most illuminating surprises (including the quotation above), yet — they are appendices. Meanwhile, what appears to be a normal programming book (a narrative littered with code examples) becomes a method reference in Chapter 8 and switches to big-picture prose for the final two chapters.So: read chapters 1 through 5, plus appendices A and B.
Skim the rest, or keep it handy as a reference. (4.0) Opened my eyes to how JavaScript really works, but had some bad bugsI've been using JS for a while now, just throwing stuff together and getting things working, copying patterns observed elsewhere. At times I saw some unfamiliar structures (particularly of the anonymous functions that return functions getting invoked immediately variety, etc.), but chose to ignore them. All the while I assumed it was actually an OO language. How wrong I was.This was quite helpful for someone familiar with (4.0) Opened my eyes to how JavaScript really works, but had some bad bugsI've been using JS for a while now, just throwing stuff together and getting things working, copying patterns observed elsewhere. At times I saw some unfamiliar structures (particularly of the anonymous functions that return functions getting invoked immediately variety, etc.), but chose to ignore them.
All the while I assumed it was actually an OO language. How wrong I was.This was quite helpful for someone familiar with the language, the syntax, many of the uses for which JavaScript is put.but who never bothered to actually figure out how to build reusable components ('classes') in it.
This will educate. Yes, Crockford's very opinionated in his style and what to use/not use in the language. But unless you really know what you're doing, it seems to make sense to adopt his conventions/opinions by default to start off with.Had some problems with bugs in the book. I visited the errata page several times, only to find that the author/editor had made changes based on user submissions that actually INTRODUCED errors into the print edition that I was reading (and in fact, in one case, the errata show a change and then a subsequent reversal of that change.can't remember now which version was actually right).
So I naturally assumed at first that I didn't understand the code, but eventually learned that there were some bad bad errors in the code. A lot of this comes from the nature of JS, its functional nature, that encourages nesting of anonymous function definitions.and hence the usual nesting of parentheses, curly braces etc.
That make functional programming difficult to read (in my mind).I also appreciate that he calls out the bits of JavaScript that are bad, awful. Cause they are.
I really appreciate that frank perspective and I'll try to avoid using most of the bad/awful stuff. My new JavaScript reference. This book takes a stand in defining the good features of JavaScript banning the rest as evil or not useful. It even introduces a linter that enforces the above!
It does all of this in 150 pages or so. The 'good' parts are actually described in the first 100 pages. That's it.The book is not for complete novices to programming: e.g. The while loop is explained in 2 lines. Syntax diagrams are used to explain every construct. However, if you have programmed in other lang My new JavaScript reference.
This book takes a stand in defining the good features of JavaScript banning the rest as evil or not useful. It even introduces a linter that enforces the above! It does all of this in 150 pages or so. The 'good' parts are actually described in the first 100 pages. That's it.The book is not for complete novices to programming: e.g.
The while loop is explained in 2 lines. Syntax diagrams are used to explain every construct. However, if you have programmed in other languages but know nothing about JS, you should be able to follow along just fine.The 'not recommended' parts of the language are still presented in 2 chapters (with explanations about the nature of their evil): the 'bad parts' and the 'awful parts.' In summary, this is a perfect tech book: terse, clear, packed with useful information, and does not insult your intelligence. It is so good that it made me reconsider my (wrong) assumptions about the language. I look at JavaScript differently now. I have mixed feelings about this book.While the book navigates through the most important and interesting part of the JavaScript language, it sometimes falls into verbose explanations of general programming syntax, and jumping between these essentials of programming and some advanced stuff like prototypes or closures makes it frustrating to read.
Not to mention those 'railroad diagrams' that were supposed to get the reader to understand the syntax, except that they don't.The important thing is t I have mixed feelings about this book.While the book navigates through the most important and interesting part of the JavaScript language, it sometimes falls into verbose explanations of general programming syntax, and jumping between these essentials of programming and some advanced stuff like prototypes or closures makes it frustrating to read. Not to mention those 'railroad diagrams' that were supposed to get the reader to understand the syntax, except that they don't.The important thing is that YOU SHOULD NOT READ IT IF YOU DON'T KNOW YOUR SH.T IN JAVASCRIPT!!Aside from touching some topics that we don't usually get to face while starting our programming journey with this weird language, the information this book provides is sometimes outdated and if you don't know how to check your info you will learn something wrong. Keep in mind that this book was written back in 2008, so the language it discusses probably follows the ECMAScript 3, and now we live in the ES8/2017 era. I had wanted to read this book for some years, as I have written more JavaScript code in my life than I care to admit, and in that time have given much thought to the topic of good coding practice in this language. From time to time, I have also been asked for book recommendations from people wanting to learn JavaScript, and on hearsay, this is what I usually pointed them to.Now I finally have read it for myself, and can vouch for its quality.
It is targetted at experienced programmers who are n I had wanted to read this book for some years, as I have written more JavaScript code in my life than I care to admit, and in that time have given much thought to the topic of good coding practice in this language. From time to time, I have also been asked for book recommendations from people wanting to learn JavaScript, and on hearsay, this is what I usually pointed them to.Now I finally have read it for myself, and can vouch for its quality. It is targetted at experienced programmers who are new to JavaScript.
People new to programming entirely would struggle with this book. This is essentially a style book - how to write readable, reliable code in a language with more than its fair share of misfeatures. It is a short, well written book, with a good natured humor for its subject that makes it fun to read.I did not entirely agree with every last one of the author's points, but all of them are worth consideration. For example, this book seems unnecessarily paranoid of JavaScript's variable hoisting - once you know how it works, it's really no problem. I was won over to a few points of style that I had not considered before, like the badness of '.The most interesting part of the book was Crockford's style concerning object orientation (chapter 5: Inheritance). That part could have done with a more in depth treatment and some exploration of the style's application to a real world scenario or two.The chapter on regular expressions was the weakest, I felt, because the examples used to teach them were of dodgy and error-prone things to use them for.
I'm not sure I would call regular expressions a 'good part' of JavaScript at all - a necessary part, yes, but as the old joke goes: you have a problem; you decide to use regular expressions; now you have two problems.The appendix on JSLint was interesting but repetetive of the content of the chapters. It probably could have been shortened or merged with the main content of the book.Short and to the point, this book can be read in a day or two, and that scores points with me. In 2018 this book is still one that I will selectively recommend, but it is also seeming a little dated. It would be nice to see a second edition to treat the changes to JavaScript that have happened since 2008 - there are a few good parts there, too.Happy coding. This book is fantastic.
There are at least 400 pages-worth of information crammed into those 176 pages. This book is definitely not written with the beginner programmer in mind. Even for an intermediate programmer such as myself, I often needed to read sentences three or four times in order to understand them. (Not because the writing was sloppy, but because of having to scour the depths of my brain to remember the meaning of terms like 'lexical scope' and 'prototypal inheritance').I love this This book is fantastic.
There are at least 400 pages-worth of information crammed into those 176 pages. This book is definitely not written with the beginner programmer in mind.
Even for an intermediate programmer such as myself, I often needed to read sentences three or four times in order to understand them. (Not because the writing was sloppy, but because of having to scour the depths of my brain to remember the meaning of terms like 'lexical scope' and 'prototypal inheritance').I love this book for the same reason I love programming. Programming is an endeavor which demands exactitude. And one of the main problems that Crockford identifies with JavaScript is that it is much too forgiving of sloppiness, which can lead to errors or security risks. So the purpose of the book is to prove that if you peel away the Bad Parts of JavaScript, you reveal a shining core of Good JavaScript.
Crockford teaches us how to avoid the pitfalls and write reliable, fast, and powerful code using the language of the Web which is, for better and worse, not going away any time soon.One of the Best parts about the Good Parts is that they are all you need to write any program conceivable in JavaScript. Fortunate for us, and a testament to the fact that JavaScript is a totally legit language, the Bad Parts are avoidable, and not terribly hard to avoid either. Just a few more lines of code. And honestly, I've never been the type of programmer who sacrifices readability for density, so I'm happy to do a little extra work in order to build the most stable program possible. Crockford seems to agree.
We are on a wavelength, I tell you.So anyway. Read this book after you've gone through a few online tutorials on JavaScript, but don't wait too long after you've started coding, so that bad habits don't sneak in and solidify too much. This book is like the or of programming books.
It really pares stuff down in an eccentric way, so that on first glance the author comes across as a masochistic pedant ( and - are bad parts?!), but on second glance he is more like an advanced alien lifeform revealing new dimensions of consciousness to you.JavaScript is a really weird language. Nobody told me that when I started to learn it. But it's expressive and adaptable, and when it works for something, it really, r This book is like the or of programming books. It really pares stuff down in an eccentric way, so that on first glance the author comes across as a masochistic pedant ( and - are bad parts?!), but on second glance he is more like an advanced alien lifeform revealing new dimensions of consciousness to you.JavaScript is a really weird language. Nobody told me that when I started to learn it.
But it's expressive and adaptable, and when it works for something, it really, really works. It's kind of a lot like English now that I think about it. This is a must-read book if you use Javascript seriously. When I put the book down, I'd learned and understood a few critical ideas about using Javascript that are changing the way I program.
In particular, I found the section related to object creation (prototypal inheritance, implications for using the new keywords, etc.) I also greatly enjoyed the appendices - I eat up lists like the awful and bad parts of Javascript, and the introduction to JSLint is going to be very fruitful. Not everythin This is a must-read book if you use Javascript seriously. When I put the book down, I'd learned and understood a few critical ideas about using Javascript that are changing the way I program. In particular, I found the section related to object creation (prototypal inheritance, implications for using the new keywords, etc.) I also greatly enjoyed the appendices - I eat up lists like the awful and bad parts of Javascript, and the introduction to JSLint is going to be very fruitful. Not everything in the book was new to me, but what was more than justified reading this once and then reading it again. 'There is danger and misery at the edges.'
As the title implies, Douglas Crockford takes a subset of JavaScript, identifies it as 'the good parts' and proceeds to explain why these parts are good (and should therefore be used). Crockford commends JavaScript for being a very expressive language but is also honest about the failings of individual parts (e.g., how arrays aren't really arrays but are in fact 'array-like objects') and proposes some genuine solutions for them that do not involve abando 'There is danger and misery at the edges.'
As the title implies, Douglas Crockford takes a subset of JavaScript, identifies it as 'the good parts' and proceeds to explain why these parts are good (and should therefore be used). Crockford commends JavaScript for being a very expressive language but is also honest about the failings of individual parts (e.g., how arrays aren't really arrays but are in fact 'array-like objects') and proposes some genuine solutions for them that do not involve abandoning the language all together†:.Crockford gives a good overview of JavaScript's grammar without attempting to be exhaustive.
He assumes that you are already at least familiar with JavaScript (which is why you would be interested in knowing 'just the good parts', presumably) and there is an underlying assumption that you have experience with at least one other language (probably a 'C-like' language).Crockford's is a short book. It's a bit terse at times but his examples are clear and he supplements these with railroad diagrams‡:. That terseness also translates more/less directly into density, like he's running 10:1 compression on his thoughts here. They require some unpacking and digestion.Of particular note: Crockford dedicates the entire 9th chapter to code-writing style. He argues that it is an essential skill, that good code-writing eliminates ambiguities (see also: Appendices A & B) and makes the code easier to read and therefore easier (and cheaper) to maintain overtime - doubly so if that code's lifespan exceeds that of its original developer.This book is a great one to keep next to David Flanagan's '.
That said, I believe this one should be consulted first to confirm good function and good form before winding back onto something more encyclopedic.-† = Which is, of course, fortunate because you have no choice but to use JavaScript when creating applications for the web. (And don't give me that bullshit about using Flash because that's a very narrow view of the web.)‡ = To be perfectly frank, the railroad diagrams are bewildering at first. If you have never seen them before, they provide a serious 'WTF?' Moment the first time. When I encountered the second set of railroad diagrams was when I knew that I was going to need to re-read the first quarter of the book just to be safe.-2010 UPDATE: 3rd read. Still good, still relevant. Definitely the kind of book you get a little more out of each time.
(For one thing, I slightly flubbed the quote above about the arrays, but not so bad as to retract it.). On December 8, 2014, President Barack Obama became the first president of the United States to write a computer program (at least while in office).
It was part of a national campaign to get young people interested in software development. What language did the leader of the free world use to make history? JavaScript.That marks just another milestone in the history of this tragic, wonderful, misunderstood language. Calling it a Shakespearean tragedy would be appropriate since Crockford's authorit On December 8, 2014, President Barack Obama became the first president of the United States to write a computer program (at least while in office).
It was part of a national campaign to get young people interested in software development. What language did the leader of the free world use to make history? JavaScript.That marks just another milestone in the history of this tragic, wonderful, misunderstood language. Calling it a Shakespearean tragedy would be appropriate since Crockford's authoritative book on the language peppers in quotes from the bard to give you the sense of what JavaScript is really about: a language balanced by really terrible features but with enough forward thinking ideas that it's still a good language.I don't agree with all of Crockford's opinions on what's 'bad' and I found some of his reasoning a little questionable (things like the postfix operators -, and the decision of where to declare your variables).
Of course, I'm not alone in this, which is why I'm firmly in the camp of JSHint as opposed to JSLint.I found the regex chapter to be unnecessary; I would have been okay with just a paragraph telling me that JavaScript has native regex support and I can declare regex literals. The chapter was neither long enough to give a thorough tutorial on regular expressions, yet not short enough to flow with the book's otherwise terse nature.As others have mentioned, the wire diagrams in the back material are a baffling addition. The only purpose they really serve is to remind you that JavaScript has a formal syntax, despite the terrible decisions of browser vendors to be sloppy about it.I appreciate the efforts that Crockford made to write this book and I appreciate that he has largely been responsible for moving JavaScript from a curious toy language to a full-fledged tool for building modern applications.
This would be a 3.5 star is I could rate it that. I think my expectations were off going into this, as I expected an 'in depth' look at language features for people who already knew JavaScript. Instead, I felt like it was also trying to teach the language to newcomers and spent a lot of time on bits and pieces that I would assume someone who works with the language would already know.It moves incredibly quickly, which for the most part is a point in its favor. In several spots, though, I wish th This would be a 3.5 star is I could rate it that. I think my expectations were off going into this, as I expected an 'in depth' look at language features for people who already knew JavaScript. Instead, I felt like it was also trying to teach the language to newcomers and spent a lot of time on bits and pieces that I would assume someone who works with the language would already know.It moves incredibly quickly, which for the most part is a point in its favor.
In several spots, though, I wish the author would have been clearer on why a specific technique is bad beyond 'this is bad, don't do it'. It's strongest cases are when it's showing side-by-side examples of code illustrating why certain things are better one way or the other. On the flip side, the whole first section is dedicated to diagramming out the grammar of the language. The amount of space dedicated to this as opposed to the 'awful parts' later in the book seems imbalanced to me.In the end, I learned some new stuff about the language, but I had already seen a good portion of the content in other places. I'd recommend this whole-heartedly to someone with a strong technical background that isn't already familiar with JavaScript. For folks who already have a decent understanding of modern JavaScript, read the section on functions and inheritence and skim the rest. JavaScript is a language of great contradiction.
It is one of the most widely used programming language. But the language has also carries a lot of design problems, many have born from its original sponsors' Microsoft and Netscape's bitter rivalry.Douglas Crockford has the idea to highlight the good part of the language but also to warn the unsuspecting programmers of its bad parts. He deliberately select a subset of the language and put it into a small book. While this is a commendable approach JavaScript is a language of great contradiction. It is one of the most widely used programming language. But the language has also carries a lot of design problems, many have born from its original sponsors' Microsoft and Netscape's bitter rivalry.Douglas Crockford has the idea to highlight the good part of the language but also to warn the unsuspecting programmers of its bad parts. He deliberately select a subset of the language and put it into a small book.
While this is a commendable approach, the book's success is mixed. And this have a lot to do with the reality that the language is still in a state of confusion, despite a lot have been done to advance the art of JavaScript programming recently.The most useful part of the book is perhaps its appendix A and appendix B that's list the awful part and bad part of the language. That's because they are unambiguous advice you can use right away.
The main part clear up a lot of concept about JavaScript programming, but it falls short of establishing clear pattern to follow. Something as fundamental as creating an object can be done in multiple ways, each has its subtle trade off. What I am looking is a clear direction of what to do without deliberating over the merit every time. I think this is a confident state this book or the larger community have yet to arrived in. I read JavaScript not because I plan on programming for the web, but because I need to figure out how to get my models and code onto computers in an organization with very restrictive policies on installing programs on computers, and the browser seems like one way to do it. That said, I'm not interested in things like DOM, but I want to be able to use Javascript (or at least the environment) well.JTGP reads like a reference.
Like O'reilly's Nutshell series, there are parts essay where he explain I read JavaScript not because I plan on programming for the web, but because I need to figure out how to get my models and code onto computers in an organization with very restrictive policies on installing programs on computers, and the browser seems like one way to do it. That said, I'm not interested in things like DOM, but I want to be able to use Javascript (or at least the environment) well.JTGP reads like a reference. Like O'reilly's Nutshell series, there are parts essay where he explains why he thinks a particular feature or class of features is good, but most of it reads like a language reference, albeit a reference for a subset of a language (which is fine, Stroustrup does the same thing when he feels like it)But like most references, it is not a place to go if you are trying to learn how to do anything. I appreciate that it does not spend its time talking about DOM like most Javascript books, but there is no discussion on practical matters, for that I have to look elsewhere.
A concise, opinionated coverage of JavaScript for experienced developers. This is not a beginners book.The book begins by describing the language Grammar using railroad diagrams. This is immensely helpful in forming a mental diff against whichever imperative C-based language you're coming from (C, C, Java, etc.).I found the coverage of object construction (new, constructor functions) confusing.
I had to re-read it to understand what was going on. This is partly due to JavaScript's pandering to A concise, opinionated coverage of JavaScript for experienced developers. This is not a beginners book.The book begins by describing the language Grammar using railroad diagrams. This is immensely helpful in forming a mental diff against whichever imperative C-based language you're coming from (C, C, Java, etc.).I found the coverage of object construction (new, constructor functions) confusing.
Javascript The Good Parts
I had to re-read it to understand what was going on. This is partly due to JavaScript's pandering to classical OO languages, but I still felt that Douglas could have explained it clearer.Three chapters in particular stand out, and are likely to keep me coming back to the book. Chapter 5, 'Inheritance', explains prototypal inheritance nicely and concisely. Appendices A and B, 'Awful Parts' and 'Bad Parts' respectively, are concise listings of features to avoid (if you happen to agree with Douglas on the harmfulness of the feature in question).All in all, this is the kind of programming book we need more of. Short, concise, and honest. Crockford writes persuasively about the elegant and powerful features that lurk within Javascipt that often get forgotten about due to the (admittedly numerous) failings in other parts of the language.By restricting yourself to only the good parts, and taking some simple steps to mitigate the bad as far as possible, Crockford shows how it is possible to write Javascript programs that are readable and maintainable.
Which might come as a surprise to many of the Javascript sceptics out there, and I Crockford writes persuasively about the elegant and powerful features that lurk within Javascipt that often get forgotten about due to the (admittedly numerous) failings in other parts of the language.By restricting yourself to only the good parts, and taking some simple steps to mitigate the bad as far as possible, Crockford shows how it is possible to write Javascript programs that are readable and maintainable. Which might come as a surprise to many of the Javascript sceptics out there, and I should know as I used to be one:)One of the best programming language books I've read. By offering a critique of the language rather than just a reference, it packs more useful content into its few pages than many other, weightier books. Well written, succinct, authoritative. If you are interested in Javascript then you should read this book.
'JavaScript: The Good Parts' is a somewhat terse read; fortunately, in that terseness, the book is incredibly efficient at defining a safer, smarter way to use the JavaScript programming language-without wasting the reader's time. On the other hand, since there are not a lot of examples or exercises included with the book, the topics are still somewhat nebulous until the reader goes and tries them out elsewhere.
'JavaScript: The Good Parts' would best serve as a handy reference book while one i 'JavaScript: The Good Parts' is a somewhat terse read; fortunately, in that terseness, the book is incredibly efficient at defining a safer, smarter way to use the JavaScript programming language-without wasting the reader's time. On the other hand, since there are not a lot of examples or exercises included with the book, the topics are still somewhat nebulous until the reader goes and tries them out elsewhere. 'JavaScript: The Good Parts' would best serve as a handy reference book while one is coding.
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