建立XMLHttpRequest对象
utl.js
if (node == null)
return "";
var str = "";
switch (node.nodetype) {
case 1: // element
str += "<div class='element'><<span class='elementname'>" + node.nodename + "</span>";
var attrs = node.attributes;
for (var i = 0; i < attrs.length; i++)
str += createxmlattribute(attrs[i]);
if (!node.haschildnodes())
return str + "/></div>";
str += "><br />";
var cs = node.childnodes;
for (var i = 0; i < cs.length; i++)
str += createxmltree(cs[i], indent + 3);
str += "</<span class='elementname'>" + node.nodename + "</span>></div>";
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 += "<span class='text'>" + node.nodevalue + "</span><br />";
break;
case 7: // processinstruction
str += "<?" + node.nodename;
var attrs = node.attributes;
for (var i = 0; i < attrs.length; i++)
str += createxmlattribute(attrs[i]);
str+= "?><br />"
break;
case 4: // cdata
str = "<div class='cdata'><![cdata[<span class='cdata-content'>" +
node.nodevalue +
"</span>]" + "]></div>";
break;
case 8: // comment
str = "<div class='comment'><!--<span class='comment-content'>" +
node.nodevalue +
"</span>--></div>";
break;
case 10:
str = "<div class='doctype'><!doctype " + node.name;
if (node.publicid) {
str += " public \"" + node.publicid + "\"";
if (node.systemid)
str += " \"" + node.systemid + "\"";
}
else if (node.systemid) {
str += " system \"" + node.systemid + "\"";
}
str += "></div>";
// 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 " <span class='attribname'>" + a.nodename + "</span><span class='attribvalue'>=\"" + a.nodevalue + "\"</span>";
}
<html><head><title>ajax test</title>
<meta http-equiv=content-type content="text/html; charset=gb2312">
<script src="ajax test_files/utl.js"></script>
<link rev=stylesheet media=all href="ajax test_files/ajax.css" type=text/css
rel=stylesheet>
<script>
//------------ xmlhttpobj类 ----------------
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 + "<br/>")
o.debugxml("status :" + xmlhttp.status + "<br/>")
o.debugxml(" <div style='background:#ffc;margin-left:10px;border:1px solid #669;padding:3px'>" + createxmltree(xmlhttp.responsexml,0) + "</div>")
}
}
}
this.gettext=function()
{
if (xmlhttp==null) {return "还没加载 xmlhttprequest"}
if (xmlhttp.readystate==4) {return xmlhttp.responsetext}
return xmlhttp.readystate
}
this.debugxml=function(log)
{
try{document.getelementbyid("xmldebug").innerhtml+=log}
catch(e){}
}
}
var xmldoc1=new xmlhttpobject("tree.xml",true)
</script>
<meta content="mshtml 6.00.3790.2706" name=generator></head>
<body><select
onchange='xmldoc1.url=this.value;document.getelementbyid("xmldebug").innerhtml=""'>
<option value=tree.xml selected>tree.xml</option> <option
value=xtree.xsl>xtree.xsl</option> <option value=/feed.asp>blog
feed</option></select> <input onclick=xmldoc1.senddata() type=button value=xmldoc1.senddata()> <input onclick=alert(xmldoc1.gettext()) type=button value=xmldoc1.gettext()> <input onclick="if (confirm('clear log?')) {document.getelementbyid('xmldebug').innerhtml=''}" type=button value=clearlog>
<div id=xmldebug></div></body></html>
html {
border-top-width: 0px; border-left-width: 0px; border-bottom-width: 0px; border-right-width: 0px
}
body {
border-top-width: 0px; border-left-width: 0px; border-bottom-width: 0px; border-right-width: 0px
}
body {
background: buttonface; font: message-box
}
form {
padding-right: 0px; padding-left: 0px; padding-bottom: 0px; margin: 0px; padding-top: 0px
}
fieldset fieldset {
margin: 5px
}
button {
margin-left: 5px
}
textarea {
width: 100%; height: 200px
}
#out {
border-right: threeddarkshadow 1px solid; padding-right: 3px; border-top: threeddarkshadow 1px solid; margin-top: 5px; padding-left: 3px; background: white; padding-bottom: 3px; border-left: threeddarkshadow 1px solid; color: black; padding-top: 3px; border-bottom: threeddarkshadow 1px solid; font-family: verdana
}
#srctextcontainer {
display: none
}
.element {
padding-left: 16px; color: blue
}
.elementname {
color: darkred
}
.attribname {
color: red
}
.attribvalue {
color: blue
}
.text {
padding-left: 16px; color: windowtext
}
.cdata-content {
display: block; padding-left: 16px; border-left: gray 1px solid; color: windowtext; font-family: courier new; white-space: pre
}
.comment {
padding-left: 16px; color: blue
}
.doctype {
padding-left: 16px; color: blue
}
.comment-content {
display: block; color: gray; font-family: courier new; white-space: pre
}
#xmldebug {
border-right: #000 1px solid; padding-right: 4px; border-top: #000 1px solid; margin-top: 6px; padding-left: 4px; font-size: 12px; background: #fff; padding-bottom: 4px; overflow: auto; border-left: #000 1px solid; padding-top: 4px; border-bottom: #000 1px solid; height: 400px
}
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