JavaScript

Copy Code code as follows: var test= (function () {var arr2=[1,2,3,3]; return function () {return arr2;};}) () array.prototype.f1= function () {return [];} array.prototype.f2= function () {this.length=0; return this;} It is then invoked

One, what is closure? The "official" explanation is that the term "closure" refers to an expression (usually a function) that has many variables and an environment that binds them, and therefore these variables are also part of the expression. I

After the Firebug panel is enabled, A Window.console object and a Window.console.firebug variable are added to save the current version of the current Firebug, and when the Firebug panel is turned back to normal, we can detect if the Firebug is

Copy Code code as follows: Convert string to XML object function String2xml (xmlstring) { For IE if (window. ActiveXObject) { var xmlobject = new ActiveXObject ("Microsoft.XMLDOM"); Xmlobject.async = "false"; Xmlobject.loadxml (xmlstring);

Copy Code code as follows: (function () { var kmock = window. Kmock = function () { } KMock.prototype.setup = function (methodname) { var instance = this; Instance[methodname] = { Returnas:function (FN) { Instance["_" + methodname] =

The implementation of row drag is very simple, select a row, drag up on the line with the above exchange position, down to the following line swap position. The question is how to get the swap line. I've seen a very detailed tutorial that calculates

JavaScript native and jquery libraries implement IFRAME adaptive content height and width---recommend using jquery Code! The code based on the jquery library is well implemented: Based on the implementation of JS native

Here is just pure build, even the environment is not, also play what server-side JS, everything has become a cloud, let us first set up an environment, input a "Hello World" page. That's right Construction under the Windows7, you only need to follow

1. Foreword Lazy Loading Technology (lazyload) is not a new technology, it is the JS programmer of the Web page performance optimization of a scheme. The core of lazyload is load on demand. There are lazyload figures in large websites, such as

The main purpose is to monitor which key is pressed by the keyboard and turn into ASCII code; Copy Code code as follows: window.event.keyCode So how to replace the keypad carriage return? First of

The first is the most conventional approach: Program code Copy Code code as follows: test One day, when we know that JavaScript is separated from the HTML structure, we change the way it is written: Program code

Today in doing a blog forwarding function, like the Sina Weibo broadcast of that function, there is a textarea, that is, we send a meager box, others have a meager button, when we click on the forwarding button, his meager will enter into the

The summer vacation also made the EXT4 Web desktop, more is also the javascript thing. For JavaScript, it's only document.getElementById () and alert (), and now it's getting closer. If there is anything wrong with this article, please point out. As

Three features of a single case pattern: 1, the class has only one instance 2, the class creates the instance itself (the instance object inside the class creates itself) 3, exposing this instance interface to the entire system That's probably what

Speaking of "the basic mechanism of JavaScript archetype inheritance", this article will specifically say the inheritance of constructors. Starting with a simple example, create a people constructor that describes humans: Copy Code code as

When variable a assigns a value to variable B, the value in the stack is copied into the space allocated for the new variable. How to understand? Copy Code code as follows: var x = y = 1; y = 2; alert (x); How much is

In JavaScript, the OnLoad function is most commonly used, and children's shoes, which involve almost JavaScript, have to be contacted. The function is to wait until the Web page is completely loaded and then execute the statements within the code

The data items that are sorted by are called "Sort Codes", which is also the key code for the data element. To make it easier to find, you usually want the data tables in your computer to be sorted by key code. such as ordered table binary lookup,

jquery is a very good class library, it gives us a lot of client programming, but nothing is omnipotent, when it does not meet our needs we need to rewrite it, but also do not affect its original function or modify its original function , such as my

Copy Code code as follows: JScript files: Detection browser MSIE Firefox var Ie=false,moz=false; (Function () {//check the browser var useragent=navigator.useragent; if (Useragent.indexof ("MSIE")!=-1) Ie=true; else if