JavaScript

In fact, the first to learn JS when you have seen the implementation of inheritance. It was just to try to understand the code snippet from the book. Today, I think again, it feels like a result of the evolution of a thought exploration.

This article introduces the JavaScript timing mechanism, to understand the JavaScript timing mechanism, it is necessary to know the operating mechanism of JavaScript. First of all, JavaScript is a single-threaded run (JavaScript engine thread)

1, how to create hyperlinks in Javasript 2, apply to the tree control event handling in Ext Tree_03.js Copy Code code as follows: Ext.onready (function () { var root = new Ext.tree.TreeNode ({//tree, there is no function, using

Each function we create has a prototype (prototype) attribute, which is an object that contains properties and methods that can be shared by all instances of a particular type. The benefit of using it is that all object instances can share the

This section of the code mainly uses the OnMousedown event and the Event.button properties, the main features and usage are as follows. The settimeout method executes an expression once, after the specified time, after loading, only once. The Charat

In fact, this should not be included in the JS Tutorial category. This fixed property should be supported for ff,ie6 above browsers. Only IE6 not supported. That's why I'm trying to IE6. I'll just give you a tutorial here. And this effect can also

This article analyzes JavaScript closures and scopes in the example. Share to everyone for your reference, specific as follows: 1. if (! () A "in Window") { var a = 1; } alert (a); Analysis Code meaning: If window does not contain

This article describes the method, the trigger condition is independent, you can select or deselect all the designated name checkbox, the same page can have more than one group for the checkbox, the function is sound, general strong. Effect Chart:

The   Regular expression (regular expression) describes a string matching pattern that can be used to check whether a string contains a seed string, replaces a matching substring, or extracts a substring from a string that matches a condition.

Related reading: JS Regular expression basic syntax (pristine) Regular expression syntax A regular expression is a literal pattern consisting of ordinary characters (such as characters A through Z) and special characters (called metacharacters).

Put a implementation method: Code Copy Code code as follows: Untitled Page Description: 1. You need to invoke jquery. 2. Here get the mouse in the position of the picture with a speculative method, set

Http://www.cnblogs.com/dahuzizyd/archive/2007/01/04/javascript_Double_click.html On the WebForm, some processing takes a long time, in order to prevent repeated submissions, you should use the combo-proof JavaScript code: function Doublecheck ()

This is a lot of inspection, a better idea Show default picture when no picture is present" practice by Ahanan [Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform] Use JavaScript to

The value of this is determined at run time JS in what this represents, this is in the program run according to the context of the environment, can be divided into the following situations. 1. This in the global scope In the global scope, this

The looks like this: Implement enumeration type, poker application function Createnum (p) {//constructor var enumeration = function () {Throw ' can not instantiate enumerations ';} ; Rewrite the prototype and assign the prototype to

Objective By using the call (), apply (), and bind () methods, we can easily borrow the methods of other objects without inheriting it from these objects. Borrowing methods in JavaScript In JavaScript, you can sometimes reuse functions or methods

Javascript: Copy Code code as follows: Html: Copy Code code as follows: Demo Code: & Lt;meta http-equiv= "Content-type" content= "text/html; Charset=iso-8859-1 "> untitled

It is characterized by the expansion of convenience, as long as they add the title and content can be automatically initialized. Untitled document tab [1] tab [2] tab [3] tab [4] 1 after a number of steps mentioned above, a A

Navigation, mouse put up to see the effect on 1 First Item II Third item on 2 The first of the second item on 3 The first of the second item                 [Ctrl + A All SELECT Note: If the

The method used in parsing is typically an eval or new function, and the current IE8 and Firefox3.1 are built with native JSON objects (supposedly a certain performance boost). So how do we choose from these three methods (because of the performance