Learning javascript ebook

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The You Don’t Know JS series is a 7 book series written by Kyle Simpson. Learn the essential programming building blocks, including operators, types, variables, conditionals, loops, and functions. JavaScript Garden is a growing collection of documentation about the most quirky. [registration] Get started with JavaScript with this free eBook and learn one of the most important languages in web development today. With helpful tips and. The third edition of Eloquent JavaScript was made possible by financial hard work, but everything you learn is yours and will make subsequent learning.

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Learning Javascript Ebook

Modern JavaScript Tutorial: simple, but detailed explanations with examples and tasks, Here we learn JavaScript, starting from scratch and go on to advanced. Here is a list of 15 free e-books that will help you learn Javascript in a better way. From beginners to experienced ones, the list has books for all. The internet is full of good things and one of them is free eBooks and PDF. I highly recommend Java programmers to learn JavaScript, it's only going to help.

The Module pattern is based in part on object literals and so it makes sense to refresh our knowledge of them first. Names inside the object may be either strings or identifiers that are followed by a colon. Outside of an object, new members may be added to it using assignment as follows myModule. That said, if we're opting for this technique, we may be equally as interested in the Module pattern. It still uses object literals but only as the return value from a scoping function. The Module Pattern The Module pattern was originally defined as a way to provide both private and public encapsulation for classes in conventional software engineering. What this results in is a reduction in the likelihood of our function names conflicting with other functions defined in additional scripts on the page. Privacy The Module pattern encapsulates "privacy", state and organization using closures. It provides a way of wrapping a mix of public and private methods and variables, protecting pieces from leaking into the global scope and accidentally colliding with another developer's interface. With this pattern, only a public API is returned, keeping everything else within the closure private. This gives us a clean solution for shielding logic doing the heavy lifting whilst only exposing an interface we wish other parts of our application to use.

Deep Learning. Data Processing. Data Science. Computer Vision. Android Development. Augmented Reality. Windows Mobile Programming. Enterprise Mobility Management.

Operating Systems. Windows Mobile. Application Development. Programming Language. Geospatial Analysis. Application Testing. Design Patterns. Functional Programming. High Performance.

The Modern JavaScript Tutorial

GUI Application Development. Business Process Management. Cloud Computing. Systems Administration. Configuration Management.

Three awesome (and free) eBooks for learning JavaScript

Network Security. Infrastructure Management. Cloud Platforms.

Cloud Foundry. Penetration Testing.

Three awesome (and free) eBooks for learning JavaScript

Application Security. Information Security. Dispatching custom events. UI Events. Mouse events basics. Drag'n'Drop with mouse events.

Forms, controls. Form properties and methods. Form submission: Document and resource loading.

DOMContentLoaded, load, beforeunload, unload. Resource loading: List of extra topics that are not covered by first two parts of tutorial. There is no clear hierarchy here, you can access articles in the order you want. Frames and windows. Popups and window methods. Cross-window communication. The clickjacking attack. Binary data, files. ArrayBuffer, binary arrays. TextDecoder and TextEncoder. Network requests. Download progress. Cross-Origin Requests. Storing data in the browser.

LocalStorage, sessionStorage. JavaScript animations. Web components. From the orbital height. Template element. Shadow DOM slots, composition.

Shadow DOM styling. Shadow DOM and events. Regular expressions.

Patterns and flags. Methods of RegExp and String. Character classes.

Learning JavaScript Design Patterns

Escaping, special characters. Sets and ranges [ Greedy and lazy quantifiers. It should be noted that there isn't really an explicitly true sense of "privacy" inside JavaScript because unlike some traditional languages, it doesn't have access modifiers. Variables can't technically be declared as being public nor private and so we use function scope to simulate this concept. Within the Module pattern, variables or methods declared are only available inside the module itself thanks to closure.

Variables or methods defined within the returning object however are available to everyone. History From a historical perspective, the Module pattern was originally developed by a number of people including Richard Cornford in It was later popularized by Douglas Crockford in his lectures. Another piece of trivia is that if you've ever played with Yahoo's YUI library, some of its features may appear quite familiar and the reason for this is that the Module pattern was a strong influence for YUI when creating their components.

Examples Let's begin looking at an implementation of the Module pattern by creating a module which is self-contained. The counter variable is actually fully shielded from our global scope so it acts just like a private variable would - its existence is limited to within the module's closure so that the only code able to access its scope are our two functions.

Our methods are effectively namespaced so in the test section of our code, we need to prefix any calls with the name of the module e. When working with the Module pattern, we may find it useful to define a simple template that we use for getting started with it. The module itself is completely self-contained in a global variable called basketModule. The basket array in the module is kept private and so other parts of our application are unable to directly read it.

It only exists with the module's closure and so the only methods able to access it are those with access to its scope i. Notice how the scoping function in the above basket module is wrapped around all of our functions, which we then call and immediately store the return value of.

This has a number of advantages including: The freedom to have private functions and private members which can only be consumed by our module. As they aren't exposed to the rest of the page only our exported API is , they're considered truly private. Given that functions are declared normally and are named, it can be easier to show call stacks in a debugger when we're attempting to discover what function s threw an exception.

J Crowder has pointed out in the past, it also enables us to return different functions depending on the environment. In the past, I've seen developers use this to perform UA testing in order to provide a code-path in their module specific to IE, but we can easily opt for feature detection these days to achieve a similar goal.

Module Pattern Variations Import mixins This variation of the pattern demonstrates how globals e. This effectively allows us to import them and locally alias them as we wish.

This takes as its first argument a dot-separated string such as myObj. Using setObject allows us to set the value of children, creating any of the intermediate objects in the rest of the path passed if they don't already exist.

For example, if we wanted to declare basket. Here, we see an example of how to define a namespace which can then be populated with a module containing both a private and public API.

The following example is heavily based on the original YUI Module pattern implementation by Eric Miraglia, but again, isn't vastly different from the vanilla JavaScript version: Y. Ben Cherry previously suggested an implementation where a function wrapper is used around module definitions in the event of there being a number of commonalities between modules.

In the following example, a library function is defined which declares a new library and automatically binds up the init function to document. For starters, it's a lot cleaner for developers coming from an object-oriented background than the idea of true encapsulation, at least from a JavaScript perspective. Secondly, it supports private data - so, in the Module pattern, public parts of our code are able to touch the private parts, however the outside world is unable to touch the class's private parts no laughing!

Oh, and thanks to David Engfer for the joke. Disadvantages The disadvantages of the Module pattern are that as we access both public and private members differently, when we wish to change visibility, we actually have to make changes to each place the member was used. We also can't access private members in methods that are added to the object at a later point. That said, in many cases the Module pattern is still quite useful and when used correctly, certainly has the potential to improve the structure of our application.

Other disadvantages include the inability to create automated unit tests for private members and additional complexity when bugs require hot fixes.

It's simply not possible to patch privates. Instead, one must override all public methods which interact with the buggy privates.

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