JavaScript

If Ajax technology is frequently used on the client, we have to create XMLHTTP objects multiple times. Of course, as you know, we can improve the creation method, such as using global variables to cache an instance (client Singleton mode ?!), This

Regexp classThe Regexp object constructor can contain one or two parameters.The first parameter describes the pattern string to be matched. If there is a second parameter, this parameter provides additional processing instructions.I. Basics 1.1 Use

I. What is event bubbling? Trigger a certain type of event on an object (such as clicking an onclick event). If this object defines the processing of this event Program , The event will call this handler. If the event handler is not defined or the

I was blinded when I saw this question, because I didn't clear it at that time and thought about it for a long time. Then I came to the Internet to check it, A foreign website found that the scope of the functions after setinterval and setTimeout is

Getelementsbyclassname () To read a large number of HTML Code To find out the tree menu (maybe there are multiple), let's first implement a method to find the DOM node through classname: getelementsbyclassname. This is a simple but practical

At first, I thought of using jquery's click () event to trigger the hyperlink's Click Event (the same effect as trigger ("click ). The results are unsatisfactory. Example: IE: Firefox: CopyCode The Code is as follows: click "Click me ".

In one case, two aspects are simulated: click a super connection event.Firefox compatible FunctionsAdd an onclick event to htmlanchorelement CopyCode The Code is as follows: Try { // Create a element so that htmlanchorelement is

JavaScript code: Code Copy code The Code is as follows: function expandother (El, EL2 ){ Whichel = Document. getelementbyid (EL) Button = Document. getelementbyid (EL2) If (whichel. style. Display = 'None '){ Whichel. style. Display =

The syntax for creating objects in Javascript is followed by a function call after the new operator. For example CopyCode The Code is as follows: var OBJ = new object (); VaR date = new date (); The new operator first creates a new object without

This map uses a map.Figure bar map online API addressHttp://union.mapbar.com/apidoc/Offline chm format:Http://union.mapbar.com/apidoc/chm/mapbarapi.rar : The mapbar map API allows you to use JavaScript to embed a mapbar map into your own

For more information about JSON objects, see Wikipedia (http://zh.wikipedia.org/zh-cn/JSON) and the official website (http://www.json.org/json-zh.html ). We often say that JavaScript supports JSON native, because JSON is a flexible application

Internet Explorer listener Code [Ctrl + A select all Note: If you need to introduce external JS, You need to refresh it to execute] ASCII code tableASCII 0 {nulo, SEM som}ASCII 1ASCII 2ASCII 3ASCII 4ASCII 5ASCII 6ASCII 7ASCII 8

This article undertakes the basics of the previous JavaScript Object-Oriented Programming (1. As mentioned in the previous article, JavaScript does not have the concept of a class, and classes must be defined through functions. Here is an example:

Return to original. After the style switch, return the control to the page, that is, table. js only controls the switching style and record operations: CopyCode The Code is as follows: New web project Option 1 Option 2 Option

The direct variable character of the regular expression: Character Match \ O NUL characters \ T Tab \ N Line Break \ V Vertical Tab \ F Page feed

Method 1: Regular Expression replacement recommendation In my opinion, the best method is to use regular expressions, which is the core principle. Below is Code Original Copy code The Code is as follows: Next let's take a look at "/s" in the JS

I have been cooperating with colleagues who do not develop according to standards in my development work, so it cannot be described as "Pleasant" to work with him. Now I am writing this article to share with you a little bit of experience, but more

Metacharacters^ $. * +? =! : | \/() [] {} When using these symbols, you need to use "\" for transfer. If you cannot remember which punctuation marks need to be transferred, you can use the Backslash "\" when using punctuation marks. Simple Matching1

[Eval () function] JavaScript has many tips to make programming easier. One of them is the eval () function, which can execute a string as a JavaScript expression. For example: Copy codeThe Code is as follows: var the_unevaled_answer = "2 + 3 "; Var

There are eight common examples:Mousedown: the mouse button is pressed.Mouseup: the mouse button is released.Click: click the mouse button.Dblclick: the mouse button is pressed.Contextmenu: Right-click the menu.Mouseover: move the mouse over the