After a request is sent, the client cannot determine when the request will be completed. Therefore, an event mechanism is required to capture the request State. The XMLHttpRequest object provides the onreadyStateChange event to implement this
I. What is Ajax? AJAX is called "Asynchronous JavaScript and XML" (Asynchronous JavaScript and XML). Ajax is not a technology. It is actually several technologies, each of which has its own unique characteristics, combined into a powerful new
I am very happy to have you read the ajax instance tutorial I wrote, whether you are the first time or an old friend. I will present what I have learned so far here, and I am not stingy with it. What is ajax?
Important: ajax is not a language, but a
Yes, what we want to achieve today is to read and Display Server data without refreshing the webpage.Take out what we prepared last time.1: function of the XMLHTTPRequest object.2: Asp outputs an xml file. You can click to view the File ContentCopy
The property method can contain parameters:Copy codeThe Code is as follows:Function ClassX (name ){This. name = name;ClassX. prototype. show = function (param ){Alert (this. name + "" + param );};}Var o = new ClassX ("name ");O. show ("param"); //
I. Use iframe to generate history through document. writeCopy codeThe Code is as follows: 0 0 Click the button to update the page DOM (simulate ajax submission). the browser's back button is available. Click Back to return to the previous
Client code mouseover. phpCopy codeThe Code is as follows: mouse suspension test Server code:Mouseover_check.phpCopy codeThe Code is as follows:Header ("Content-type: text/html; charset = gb2312 ");Header ("cache-control: no-cache,
Many companies are currently working on standard static pages. To enhance the user experience, AJax effects are often involved, and an important technology (Tool) used by AJax is designed) the XMLHttpRequest object. Today I learned some methods and
First, let's know how to create this object in javascript:Program codeVar xmlHttp = new XMLHttpRequest ();This line of simple code creates the XMLHttpRequest object in Mozilla, Firefox, Safari, Opera, and basically all non-Microsoft browsers that
GOOGLE maps use AJAX, but GOOGLE does not support AJAX, and most search engines do not. Therefore, if AJAX is used as a website, the website ranking and traffic can be imagined, although it may be supported by the development of search engines in
Friends who have used AJAX certainly know that javascript is using UTF-8 International encoding, that is, each Chinese character with 3 bytes to store, but this caused the use of AJAX to send data when garbled.One solution is to use
The input name automatically associates with the name.The background is dimmed when the music address is read.Synchronize the LRC lyrics,Users can expand and integrate their own music sitesScreen. width-333) this. width = screen. width-333 "border =
VII. AJAX Development Now, you can clearly understand what AJAX is, what AJAX can do, and what AJAX is not. If you think AJAX can improve your development work, continue to see how to use AJAX.
7.1 AJAX application technology
Among the seven
I will not blow off the ease of server operations. Everyone on the Earth knows that it is the most annoying thing to do is page refresh, and his head is dizzy, and when he is refreshing, also trigger server-side events (solution:
Http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd> this is test ajax-based rss reading example Enter an RSS address: Src = http://www.nice.or.jp /~ Mosmos/free/f105.swf width = 200 height = 200Type = application/x-shockwave-flash; quality = "high"
XML-based Asynchronous JavaScript, AJAX for short, is the crown of Web innovation (known as Web2.0. Thanks to the various technologies that make up AJAX, Web application interactions such as Flickr, Backpack, and Google have made a qualitative leap
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