JavaScript

Today, I am working on a blog forwarding function. Just like the function of Sina's meager broadcasting, there is a textArea, which is the box where we send a meager message, when someone else clicks this forwarding button, his meager content will

Copy codeThe Code is as follows:IsEmptyObject: function (obj ){For (var name in obj ){Return false;}Return true;} Analysis:1. What is an object? In javascript, an object is a combination of "key/value". To put it bluntly, it is a dataset, indicating

JQ ui and YUI widget. It is also encapsulated in a solid, compatible, and universal manner. So while the code is complete, the amount of code is naturally not small. Even if it is built on the base library, the code is hundreds of lines.Such a

The demo uses extjs to print the json array.Js code (XmlUtils. js ):Copy codeThe Code is as follows:/**/Function XmlUtils (config ){/* Define private attributes */This. isIE = !! (Window. attachEvent &&! Window. opera );This. init ();If (config

This is useful when you add deformation animations with the same options to multiple elements. Just like the last example we saw in the 20th lecture.Basic usageThe method using Fx. Elements looks similar to Fx. Morph. The difference between the two

This effect is not very difficult in itself. It mainly takes some effort in program structure and expansion to make it easier to use and use it in more places.Program features1. When the same prompt box is used for multiple trigger elements, only

In many cases, we need to change these default operations. For example, when clicking a link, we execute some ajax operations, but we do not want to perform the jump action, so we have this article: block default browser operations.In fact, this is

Record the Javascript access style sheetJavascript can access the style attributes of elements in a webpage, for example: Access style attributes through jsAlert (document. getElementById ("main"). style. backgroundColor );Modifying style attributes

This article focuses on the first reason. Finally, a development mode is provided to replace the traditional loop structure, which can completely prevent the script from getting out of control. Original article title:Speed up your JavaScript, Part

It's easy to find the path.Copy codeThe Code is as follows:Function xy45 (x1, y1) {// right-angle coordinate rotation 45 degreesVar x0 = 0;Var y0 = 0;Var s =-Math. PI/4;Var o = {};O. x = int (x0 + x1 * Math. cos (s) + y1 * Math. sin (s) + dx;O. y

Http://jqueryui.com/themeroller/On this page, you can customize your UI skin. For example, if you click the Gallery option on the tab on the left of the webpage, the official Jquery skins are listed below. Clicking Edit under any skin will jump to

Recently I have read a lot of JavaScript Library source code, such as prototype and Ext core. These libraries are widely applied to this concept. It was not until yesterday that the book "Return of the JavaScript King" had a profound understanding

Copy codeThe Code is as follows:

You can download jQuery 1.6 from here: Http://code.jquery.com/jquery-1.6.js Http://code.jquery.com/jquery-1.6.min.js Microsoft CDN: http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.6.min.js The official blog of jQuery also encourages community

It is short, concise, easy to use, efficient in performance, and can greatly improve the development efficiency. It is one of the best auxiliary tools for developing Web applications. Therefore, most developers discard Prototype and choose jQuery

1. Introduction At the end of my article "how to use the same HTML clip-continued on multiple pages", I mentioned the features of JavaScript sequential execution. Although modern browsers can download JavaScript in parallel (Some browsers), their

1. The js engine performs syntax analysis when the code is loaded. If the JavaScript code is not standardized, the syntax analysis will fail. This error is called a syntax error.2. After the syntax analysis is passed, the js engine executes the code.

Copy codeThe Code is as follows:Var a = parseInt ("09"), B = Number ("09 "); Many people think that the values of a and B are numbers 9, but they are not.ParseInt is mainly used to convert a string to an integer, or to convert a decimal point to an

For example: [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]If you try this code, it means to declare a function and execute it immediately. Because the variable scope in Javascript is based on

However, the only pity is that when the Chinese Input Method is enabled, firefox3.0 automatically matches Chinese pinyin, And the entered Chinese cannot be triggered in time; in my IE6.0, there is no such problem.Cause analysis:The Autocomplete plug-