variables

3 problems related to the scope chain The scope chain is a very red concept in the JavaScript language, and many programmers who learn and use the JavaScript language know that the scope chain is key to understanding some of the most important

4 issues related to this, new, call and apply The principle of this pointer is a very complicated question, and if we illustrate this from the implementation mechanism of this in JavaScript, many friends may become more and more confused, so this

Modular programming is a very common form of JavaScript programming. It generally makes the code easier to understand, but there are many good practices that are not widely known. In this article, I will review the basics of JS modular programming

Closures have been heard in the first contact with JavaScript. The first thing to be clear is that it does not understand complexity, and it is very useful. So what are the basics before we get to know about closures? I personally think that the

The above article has outlined the specific aspects of the console object as well as the basic application, here is a brief description of how to use the Chrome console this artifact to properly debug the JavaScript code (this is what we can really

Doing the project is a learning process! As a learning C3, from C programmers to the front end, many of the rules in JavaScript is no way or say 1:30 will not understand. I met one today, which is roughly the code. var A; Global variablesfunction

In the definition of javascripot function closures, there is generally a outer function, a inner function. So does "closure" mean the outer function or the inner function? From the official definition, it is not clear: a closure is a combination of

My last blog title is wrong, causing some misunderstanding. I think the purpose of blogging is not to recite textbooks, but to share research and development experience. My last title was changed to "one of the topics of JavaScript closures: its

Let's look at the closure's purpose. In fact, we can do a lot of things by using closures. For example, simulate object-oriented code style, more elegant, more concise expression of code, in some ways to improve the efficiency of code execution. 1

Deep understanding of JS closures Closures (closure) are a difficult and unique feature of the JavaScript language, and many advanced applications rely on closure implementations. Scope of a variable To understand closures, you must first understand

Closure is a relatively abstract concept, especially for the JS Novice. The explanation in the book is rather obscure, and it is the same for me. But he is also JS ability to improve the one link can not be bypassed, almost every interview must ask

As Web sites become "Internet apps," JavaScript code embedded in Web pages is growing larger and more complex. Web pages are more and more like desktop programs, need a team division of work, progress management, unit testing and so on ...

JavaScript's "Concurrency Model" is based on the event loop. This concurrency model differs from Java multithreading, and JavaScript concurrency is single-threaded. I simply drew a JavaScript execution diagram, and we went through the diagram to

Generally in programming, we will define functions and variables to successfully construct our system. But how does the parser find the data (functions, variables)? What happens when we refer to the object we need? Many ECMAScript programmers know

Article Introduction: Simple analysis of the jquery principle, the small jacket that clawed the jquery. Introduction The LZ is still in the third chapter of the digestive system principle recently, so this part of the content LZ intends

Order I did not appear in the recommendation column for a long time, it seems that a good response, so the continuation of the article. Properties ? When accessing properties, we use the dot (.) operator. var Luke = { Jedi:true, Age:28 }; Bad var

Module Creation Constructor (Modules that create constructors) In the previous example, a MYAPP.utilities.array object was created, but sometimes it is more convenient to create your object using the constructor, and you can implement it using the

Article Introduction: Talk about the conflict prevention (noconflict) mechanism in jQuery. Many of the JS framework class libraries choose to use the $ symbol as a function or variable name, JQuery is one of the most typical. In JQuery,

Scope objects, which are also translated into namespaces in some places, create a scope object every time a function is created, all parameters and local variables are attributes of this object. The scope object is also a property of the function

Objective Google Closure Compiler, a member of Google Closure Tools, was Google at the end of 2009Released, earlier, with Yuber Closure Compiler vs. Yuicompressor, mainly on the compression rateOn the other hand, the application of closure compiler