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This article introduces the knowledge of "how to change the construction of AJAXRequest functions to simplify the use of parameters". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Update:

1) change the constructor to make it easier to use with parameters

Class name: AJAXRequest

Creation method:

Var ajaxobj=new AJAXRequest (method,url,async,content,callback)

Return false if creation fails

Attribute: method-request method, string, POST or GET. Default is POST

Url-request URL, string, empty by default

Async-whether asynchronous. True is asynchronous, false is synchronous. Default is true.

Content-the content of the request. If the request method is POST, this property needs to be set. Default is empty.

Callback-callback function, that is, the function that is called when the response content is returned. By default, the callback function is returned directly. The callback function has a parameter of XMLHttpRequest object, that is, the callback function should be defined as follows: function mycallback (xmlobj)

Method: send ()-send a request with no parameters

An example:

The code is as follows:

/ / request method GET,URL is default.asp, asynchronous

Var ajaxobj=new AJAXRequest ("GET", "default.asp", true,null,MyCallback); / / create AJAX object

Ajaxobj.send (); / / send the request

Function MyCallback (xmlObj) {

[xss_clean] (xmlobj.responseText)

}

Ajaxrequest.js

The code is as follows:

/ *--

Author: xujiwei

Website: http://www.xujiwei.cn

E-mail: vipxjw@163.com

Copyright (c) 2006, All Rights Reserved

-- * /

Function AJAXRequest (pmethod,purl,pasync,pcontent,pcallback) {

Var xmlObj = false

Var CBfunc,ObjSelf

ObjSelf=this

Try {xmlObj=new XMLHttpRequest;}

Catch (e) {

Try {xmlObj=new ActiveXObject ("MSXML2.XMLHTTP");}

Catch (E2) {

Try {xmlObj=new ActiveXObject ("Microsoft.XMLHTTP");}

Catch (e3) {xmlObj=false;}

}

}

If (! xmlObj) return false

This.method=pmethod

This.url=purl

This.async=pasync

This.content=pcontent

This.callback=pcallback

This.send=function () {

If (! this.method | |! this.url | |! this.async) return false

XmlObj.open (this.method, this.url, this.async)

If (this.method== "POST") xmlObj.setRequestHeader ("Content-Type", "application/x-www-form-urlencoded")

XmlObj.onreadystatechange=function () {

If (xmlObj.readyState==4) {

If (xmlObj.status==200) {

ObjSelf.callback (xmlObj)

}

}

}

If (this.method== "POST") xmlObj.send (this.content)

Else xmlObj.send (null)

}

}

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