Ajax
From ThaiiS Note (Wiki)
Contents |
Create an XMLHttpRequest Object
xmlhttp=new XMLHttpRequest();
ie5-6
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
Send a Request To a Server
(Ex.)
xmlhttp.open("GET","ajax_info.txt",true);
xmlhttp.send();
Example
<html>
<head>
<script type="text/javascript">
function loadXMLDoc()
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","ajax_info.txt",true);
xmlhttp.send();
}
</script>
</head>
Server Response
- responseText get the response data as a string
- responseXML get the response data as XML data
The responseText Property (Ex.)
document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
The responseXML Property (Ex.)
xmlDoc=xmlhttp.responseXML;
var txt="";
x=xmlDoc.getElementsByTagName("ARTIST");
for (i=0;i<x.length;i++)
{
txt=txt + x[i].childNodes[0].nodeValue + "<br />";
}
document.getElementById("myDiv").innerHTML=txt;