Object--function Special DescriptionIn JS, everything is an object.
Class (Prototype object) is actually an object, it is actually an instance of the function class, through which we can create our own object instances, which can be explained by
JavaScript deep understanding of JS closure _javascript Skills _ Script Home
closures (closure) are a difficult and unique feature of the JavaScript language, and many advanced applications rely on closure implementations.
scope of a
I. Scope
When code executes in an environment, a scope chain consisting of variable objects is created to ensure orderly access to all variables and functions that have access to the execution environment. Identifier parsing is a search identifier
scope of a variable
To understand closures, you must first understand JavaScript's special variable scope.
The scope of a variable is nothing more than two kinds: global and local variables.
The special point of the JavaScript language is that the
The scope and context (contexts) in JavaScript are unique to the language, thanks in part to the flexibility they bring. Each function has a different context and scope of variables. These concepts are backed by some powerful design patterns in
When I first contacted jquery years ago, I felt like I was in the programmer's paradise. It greatly simplifies the DOM operation. Functional programming has become so easy, although more frameworks for RIA development have surfaced in recent years,
function expression
1. There are 2-clock methods for defining functions in JavaScript:
1-1. function declaration:
Copy Code code as follows:
function FuncName (ARG1,ARG2,ARG3) {
function body
}
①name property: Can read
It's very simple to eject the original.
Determine if the cookie expires, reset the cookie if it expires, and define the URL address of the pop-up page, and finally call the window. In the pop-up page URL
The POPJS code is as follows
Now in conjunction with an article on the Web, review the scope of this thing. Scopes and contexts are not the same thing, and many people may confuse it. Each function call is associated with a scope and a context. Fundamentally, scopes are based
The XCache project is headed by MOo, who is also one of LIGHTTPD's development members. LIGHTTPD is one of the fastest Web server applications and transcends Apache as well as many other Web servers. XCache try to achieve a similar effect.
The
Please see source code:
Copy Code code as follows:
function Clone (o) {
var F = function () {};
F.prototype = O;
return new F ();
}
First Look at Ext (4.1 of 1896 lines start) of the prototype inheritance.
Copy
Copy Code code as follows:
/*
* List size variable array
* version:1.0
*/
function List () {
This.list = new Array ();
};
/*** Adds the specified element to the tail of this list.* @param element specified by
1.
var name = "The window";
var object = {
name: ' My object ',
getname:function () {return
this.name;
}
};
The GetName () method here simply returns the THIS.name value. Here are several calls to Object.getname ()Ways as well as the
The rigorous model introduced in ECMASCRIPT5 allows the developer to have a "better" JavaScript language by allowing JavaScript to run the environment to make and present different processes for the most common and difficult bugs in the development
Chinese character sorting,
Mixed sorting in Chinese and English,
Data size sorting,
File type sort (suffix name sort)
Date Time sorting,
Price sorting,
Chinese mixed digit sorting;
How to: The document is loaded with the new Tablelistsort (arguments,
Because of the current jquery thunderclap piercing, I believe that it is not necessary to introduce what is jquery, the company's code is widely used in jquery, but I look at some of the children's code to find a problem, the children are using only
Since the current jquery is so thunderclap piercing, I believe that there is no need to introduce jquery, the company code is widely used in jquery, but I look at some children's code to find a problem, the children use only the fur of jquery,
Recently learned QT programming, found that the data is very small. So here's a record hoping someone will be able to use it later.
QML is a very flashy thing to make a beautiful interface. Well understood, to invoke another page on one page
There are 5 ways to implement JS inheritance:1, inherit the first way: Object posingfunction Parent (username) {This.username = Username;This.hello = function () {alert (this.username);}}function Child (Username,password) {Inheritance is implemented
the scope of a variableTo understand closures, you must first understand the special variable scope of JavaScript.The scope of a variable is nothing more than two kinds: global variables and local variables.The special point of the JavaScript
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.