Ajax and php 2.5

来源：互联网发布：分析数据编辑：程序博客网时间：2024/05/21 22:56
<DOCTYPE html><html><head><title>demo2.5</title><meta charset="utf-8"/></head><body onload="process()"><div id="myDivElement"/></body><script>var xmlHttp=createXmlHttpRequestObject();function createXmlHttpRequestObject(){var xmlHttp;try{xmlHttp=new XMLHttpRequest();}catch(e){var xmlHttpVersions=new Array("MSXML2.XMLHTTP.6.0","MSXML2.XMLHTTP.5.0","MSXML2.XMLHTTP.4.0","MSXML2.XMLHTTP.3.0","MSXML2.XMLHTTP","Microsoft.XMLHTTP");for(var i=0;i<xmlHttpVersions.length;i++){try{xmlHttp=new ActiveXObject(xmlHttpVersions[i]);}catch(e){}}}if(xmlHttp){return xmlHttp;}else{alert('Error create the xmlHttpRequest object!');}}function process(){if(xmlHttp){try{xmlHttp.open("GET","hello.txt",true);xmlHttp.onreadystatechange=handleRequestStateChange;xmlHttp.send(null);}catch(e){alert("Can't connect to server:\n"+e.toString());}}}function handleRequestStateChange(){myDiv=document.getElementById("myDivElement");if(xmlHttp.readyState==1){myDiv.innerHTML+="Request status:1(loading)<br/>";}else if(xmlHttp.readyState==2){myDiv.innerHTML+="Request status:2(loaded)<br/>";}else if(xmlHttp.readyState==3){myDiv.innerHTML+="Request status:3(interractive)<br/>";}else if(xmlHttp.readyState==4){if(xmlHttp.status==200){try{response=xmlHttp.responseText;myDiv.innerHTML+="Request status:4(complete).Server said:<br/>";myDiv.innerHTML+=response;}catch(e){alert("Error reading the response:"+e.toString());}}else{alert("There was a problem retrieving the data:\n"+xmlHttp.statusText);}}}</script></html>
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