Ajax

In Ajax applications, a page usually sends multiple requests at the same time. If there is only one XMLHTTPRequest object, the previous request is not completed, and the subsequent request will overwrite the previous one, if a new XMLHTTPRequest

For example, if you call an object with this in the global scope, the current object's "this" points to window. Javascript provides two methods to change the direction of this. They are call and apply, and of course there are methods implemented

The final result is a directory File Viewer ,: The principle is that when you click a directory, the path of the directory is sent to the server, and the server returns the file and directory information in the directory. On the server side,

Document. location this object contains information about the current URLLocation. host get port numberLocation. hostname set or get Host NameLocation. href set or get the whole URLLocation. port: set or obtain the port number of the URL.Location.

In the last development, I encountered the problem of setTimeout parameter passing in IE. in IE, setTimeout does not pass in parameters. For example, the following code does not pass in a in IE, two Parameters of BSetTimeout (function (a, B ){Alert (

Today is a Google map api tutorial on using GControl and GLayer objects to display panoramio images on a map, yesterday I wrote a Google map api tutorial about adding a control button to a Map (Google map API Tutorial: adding a control button to a

I. Problems:Var xmlHttp;Function savecarttodata (){CreateXMLHttpRequest ();Var rndcode = new Date (). getTime ();Var CartUrl = "a. asp? Cache = "+ rndcodeXmlHttp. onreadystatechange = function (){.....}XmlHttp. open ("GET", CartUrl, true );XmlHttp.

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 event handler, this event will call this handler, if the event handler is not defined or the event returns true,

This is a very simple application, which has been widely used to create foldable areas on webpages over the past few years. The basic idea is to use the display feature of CSS. use JavaScript to implement code in the foldable area-LIEHUO. NET

The technical articles of the tutorial (www.bkjia.com) have always been reproduced and have never been created by others. finally, I met AjaxControlToolkit and read a lot of articles. The project was so tight that I had to spend half a day studying

Sometimes webpages that have worked hard for half a day, especially some of the special effects of javascr into pt, can be easily copied by users who can view the source files. So how can we prevent people from viewing the source code? We can use

During programming, you must inevitably encounter complex functions. Beginners are most afraid of complicated functions. because they cannot well divide functional boundaries, they can only stack a large string of if, loop, and case. As a result,

Bkjia.com documentAfter reading ajax for a long time, there are few examples by hand. Today, I decided to write one by myself. The function is very simple and a simple user name registration function is implemented, at the same time, the user input

In the past two days, a simple Image Viewer is created, where "Previous Page" and "next page" are used, new image () is used for Image loading, and the src attribute of image is set, everything works normally in Google Chrome/Opera/FireFox. The Code

I. In Javascript, if the cloned object is of the basic type, we can assign a value directly: 1 var sStr = "kingwell"; 2 var cStr = sStr; 3 alert (cStr); // output kingwell4 sStr = "abc"; 5 alert (cStr ); // output kingwell; When a value is assigned

Client code:Copy codeThe Code is as follows: untitled document AJAX test; Server code:Copy codeThe Code is as follows:Header ('content-type: text/html; charset = GB2312 ');$ Ename = $ _ GET ["page"];If ($ ename = ""){$ Ename = "Enter :";}Echo ($

Copy codeThe Code is as follows:Function CallBackObject (){This. XmlHttp = this. GetHttpObject ();}CallBackObject. prototype. GetHttpObject = function () // Add the GetHttpObject common method to the CallBackObject prototype dynamically.{// Step 1:

Method:You just put together the rss xml format, output it, set the HTTP Header, and Mark content-type as application/XML. Common Code:Copy codeThe Code is as follows:# Post_controller: feed ()Def feedRequire "rss"Articles = Article. find: all,:

After reading the cascade menu made by Daxia, I also made an axe to the class. Hey, it took some time to paste a cascade menu. In this example, the member name is automatically displayed as long as you select the member category name:First, create a

I found that AJAX currently has a problem with cross-origin. It can only be set in IE. So I wrote a simple ASP webService, which is actually a thief program, capture Yahoo's weather and generate XML. Let's start from here. In the future, we will