      Is this the best book to start by journey on JavaScript? Ron Inbar 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' …more 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.See all 4 questions about JavaScript…. Lists with This Book. Community Reviews. Showing  Average rating 4. Rating details. More filters. Sort order. Oct 11, A. Jesse rated it really liked it. A short, dense book, describing a subset of Javascript and distinguishing which parts of the language "should" be used and which not.The author wrote JSLint, a widely-used tool for enforcing his preferences on your scripts. The preferences he wrote into JSLint are reflected here. Such precautions, which defend against dangers the novice hasn't imagined, are born of years of deep Javascript experience. They're this book's primary worth. The book claims to be for developers new to Javascript, but some basic concepts are not very well explained. For example, the book provides a brief and incomprehensible description of the relationship among Javascript objects, prototypes, and functions, which will not enlighten someone not already familiar with Javascript.It then shows workarounds for implementing a cleaner object model, which is welcome; but if you don't immediately understand the need for the workaround, read a different Javascript book than this one. A large portion of the book is occupied by flowcharts describing the syntax of the language.If I were a finite-state automaton who wanted to know how to recognize floating-point numbers, this would be useful for me. Since I am a human being who can already read and write floating-point numbers, it's an inexplicable waste of space. I'm baffled that the author thought such diagrams served any purpose, and that O'Reilly allowed him to include them and assigned someone to lay them out for publication.If anyone can explain this to me I'd be grateful. In all, a useful page paper whining to be released from a page book. Worth the read, but skip the flowcharts. Evaluate the author's recommendations for yourself.Use his JSLint tool, but take its output with a grain of salt. View all 3 comments. Jan 03, Barry King rated it it was amazing. 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. 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. 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. Jan 07, Lea Verou rated it really liked it Recommends it for: Programmers of other languages who want to learn JavaScript.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. 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. 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.May 14, William Cline rated it liked it Shelves: software-development. 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. If studied carefully, this book can probably save you some time spent staring at Firebug 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. View all 19 comments. Dec 10, Alo rated it did not like it Shelves: software-engineering.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. 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.After assignment and math operators, the third set of operators I want to introduce is conditional operators. Comparison operators always return a boolean, a value that's true or false. In addition to those, we have 4 equality operators.They accept two values, and return a boolean:. An if statement is used to make the program take a route, or another, depending on the result of an expression evaluation.The conditional checks the expression you pass to it for a true or false value. If you pass a number, that always evaluates to true unless it's 0. If you pass a string, it always evaluates to true unless it's an empty string. Those are general rules of casting types to a boolean. Did you notice the curly braces? That is called a block , and it is used to group a list of different statements.A block can be put wherever you can have a single statement. And if you have a single statement to execute after the conditionals, you can omit the block, and just write the statement:. The first is using the array literal syntax. The second uses the Array built-in function. Since we can add an array into an array, we can create multi-dimensional arrays, which have very useful applications e.You can initialize a new array with a set of values using this syntax, which first initializes an array of 12 elements, and fills each element with the number 0 :. Note that you can set the length of the array.If you assign a bigger number than the arrays current capacity, nothing happens. If you assign a smaller number, the array is cut at that position:. Returns the first item that returns true, and returns undefined if the element is not found. I personally prefer single quotes all the time, and use double quotes only in HTML to define attributes. Another way to define strings is to use template literals, defined inside backticks.They are especially useful to make multiline strings much simpler. With single or double quotes you can't define a multiline string easily - you'd need to use escaping characters. Once a template literal is opened with the backtick, you just press enter to create a new line, with no special characters, and it's rendered as-is:.Template literals are also great because they provide an easy way to interpolate variables and expressions into strings. With a loop we can automate and repeat a block of code however many times we want it to run, even indefinitely.We add a condition after the while keyword, and we provide a block that is run until the condition evaluates to true. Very similar to while , we have do.. It's basically the same as while , except the condition is evaluated after the code block is executed.We use the for keyword and we pass a set of 3 instructions: the initialization, the condition, and the increment part. Just like with while loops, you can interrupt a for loop using break and you can fast forward to the next iteration of a for loop using continue. This loop is relatively recent introduced in and it's a simplified version of the for loop:.Note that in the second invokation I passed the black string parameter as the color argument, but no age. In this case, age inside the function is undefined. Although the conditional will also be true if age is null , 0 or an empty string. You can pass any value as a parameter: numbers, strings, booleans, arrays, objects, and also functions. A function has a return value. By default a function returns undefined , unless you add a return keyword with a value:. They are very often used instead of "regular" functions, the ones I described in the previous chapter.You'll find both forms used everywhere. If the function body contains just a single statement, you can omit the parentheses and write everything on a single line:. Arrow functions allow you to have an implicit return - values are returned without having to use the return keyword. Like with regular functions, we can have default values for parameters in case they are not passed:. The two types of functions are very similar, so you might ask why arrow functions were introduced.The big difference with regular functions is when they are used as object methods. This is something we'll soon look into. Any value that's not of a primitive type a string, a number, a boolean, a symbol, null, or undefined is an object. This is the object literal syntax, which is one of the nicest things in JavaScript.You can also initialize an object using the new keyword before a function with a capital letter. This function serves as a constructor for that object. In there, we can initialize the arguments we receive as parameters, to setup the initial state of the object:. If you assign a variable the same value of another, if it's a primitive type like a number or a string, they are passed by value:.JavaScript is the programming language of the web and is used by more software developers today …. Today, software engineers need to know not only how to program effectively but also how to …. Skip to main content. Start your free trial. JavaScript: The Good Parts by. Arrays are often more efficient when the names are sequential numbers. All values are objects except for null and undefined.The type of prefix operator will return a string identifying the type of a value. Use Array. JavaScript is syntactically a C family language and has very familiar identifiers, comments and operators.Part 2 wrap-up and questions. Many object-oriented languages have methods, classes, constructors, and modules. JavaScript just has the Function. Best-practice suggests you declare all variables at the top of the function and declare all functions before you call them. Within functions, you can either return the result of an expression or return nothing undefined. Each function also receives two pseudo parameters: arguments and this. The invocation operator can surround zero or more arguments.If a function is called with too many arguments, the extra arguments are ignored. Too few arguments will force undefined to be passed to the missing arguments. The four ways to call a function are Function form, Method form, Constructor form and Apply form. The idea of a subroutine is the origin of functions. Subroutines allow for code reuse, modularity and recursion. With closures, the context of an inner function includes the scope of the outer function.An inner function continues to have access to that context even after the parent functions have returned. Function scope works like block scope. JavaScript can begin to look like a classical object-oriented language. Inheritance can be achieved through the prototype chain. However, pseudo-classical inheritance can look foreign to developers and lead to some issues. The Prototypal Inheritance approach adds a constructor function which ensures proper inheritance.While it may not be better, it cleans up the implementation. We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy, digital health investments and how technology giants such as Amazon Docker and Kubernetes are taking the world by storm!These books will get you up-to-speed fast! Docker Deep Dive is over pages long, and covers all objectives on the Docker Certified Associate exam. 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Javascript the good parts 2nd edition pdf download

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