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| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr" lang="fr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test</title>
<script type="text/javascript">//<![CDATA[
var xhr=null;
var ajaxDelay=5000;
var ajaxTimer=null;
var ajaxinUse=false;
function ajaxCreate(){
var e;
if(xhr)return xhr;
if(window.XMLHttpRequest){
try{xhr=new XMLHttpRequest();}
catch(e){xhr=null;}
}
else if(window.ActiveXObject){
try{xhr=new ActiveXObject('Msxml2.XMLHTTP');}
catch(e){
try {xhr=new ActiveXObject('Microsoft.XMLHTTP');}
catch(e){xhr=null;}
}
}
if(!xhr)alert('Impossible de créer une instance XMLHTTP');
return xhr;
}
function ajaxProc(){
if(ajaxinUse||!ajaxCreate())return false;
ajaxinUse=true;
xhr.open('GET','page.php?time='+Math.random(),true);
xhr.onreadystatechange=function(){
var e;
try{
if(xhr.readyState===4){
if(xhr.status===200||xhr.status===0){
document.getElementById('var').innerHTML=xhr.responseText;
}
ajaxinUse=false;
ajaxTimer=setTimeout(ajaxProc,ajaxDelay);
}
}catch(e){
try{
xhr.onreadystatechange=function(){}
xhr.abort();
}catch(e){}
finally{
ajaxinUse=false;
ajaxTimer=setTimeout(ajaxProc,ajaxDelay);
}
}
}
xhr.send(null);
}
window.onload=function(){ajaxProc();};
//]]>
</script>
</head>
<body>
<div id="var"></div>
</body>
</html> |
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