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This article focuses on "how to create XML HttpRequest objects", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to create a XML HttpRequest object.

Utl.js

The code is as follows:

Function createXmlTree (node, indent) {

If (node = = null)

Return ""

Var str = ""

Switch (node.nodeType) {

Case 1: / / Element

Str + = ""

Str + = ">"

Var cs = node.childNodes

For (var I = 0; I

< cs.length; i++) str += createXmlTree(cs[i], indent + 3); str += ""; break; case 9: // Document var cs = node.childNodes; for (var i = 0; i < cs.length; i++) str += createXmlTree(cs[i], indent); break; case 3: // Text if (!/^\s*$/.test(node.nodeValue)) str += "" + node.nodeValue + ""; break; case 7: // ProcessInstruction str += "" break; case 4: // CDATA str = "" + node.nodeValue + "]" + "]>

"

Break

Case 8: / / Comment

Str = ""

Break

Case 10:

Str = ""

/ / TODO: Handle custom DOCTYPE declarations (ELEMENT, ATTRIBUTE, ENTITY)

Break

Default:

/ / alert (node.nodeType + "\ n" + node.nodeValue)

Inspect (node)

}

Return str

}

Function inspect (obj) {

Var str = ""

For (var k in obj)

Str + = "obj." + k + "=" + obj [k] + "\ n"

Window.alert (str)

}

Function createXmlAttribute (a) {

Return "" + a.nodeName + "=\"+ a.nodeValue +"\ ""

}

The code is as follows:

Ajax test

/ /-XMLHttpObj class-

Function XMLHttpObject (url,Syne) {

Var XMLHttp=null

Var o=this

This.url=url

This.Syne=Syne

This.sendData = function ()

{

If (window.XMLHttpRequest) {

XMLHttp = new XMLHttpRequest ()

} else if (window.ActiveXObject) {

XMLHttp = new ActiveXObject ("Microsoft.XMLHTTP")

}

With (XMLHttp) {

Open ("GET", this.url, this.Syne)

Onreadystatechange = o.CallBack

Send (null)

}

}

This.CallBack=function ()

{

If (XMLHttp.readyState = = 4) {

If (XMLHttp.status = = 200) {

O.debugXML ("readyState:" + XMLHttp.readyState + "")

O.debugXML ("status:" + XMLHttp.status + "")

O.debugXML ("" + createXmlTree (XMLHttp.responseXML,0) + "")

}

}

}

This.getText=function ()

{

If (XMLHttp==null) {return "not loaded XMLHttpRequest"}

If (XMLHttp.readyState==4) {return XMLHttp.responseText}

Return XMLHttp.readyState

}

This.debugXML=function (log)

{

Try {document.getElementById ("XMLDebug") [xss_clean] + = log}

Catch (e) {}

}

}

Var XMLDoc1=new XMLHttpObject ("tree.xml", true)

Tree.xml xtree.xsl Blog

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