Ajax动态显示
<SCRIPT type=text/javascript>var xmlhttp;function send(){if(window.XMLHttpRequest){ xmlhttp=new XMLHttpRequest(); if(xmlhttp.overrideMimeType){ xmlhttp.overrideMimeType("text/xml"); }else if(window.ActiveXObject){var activexName = ["MSXML2.XMLHTTP","Microsoft.XMLHTTP"]; for (var i = 0; i < activexName.length; i++) { try{ //取出一个控件名进行创建，如果创建成功就终止循环 //如果创建失败，回抛出异常，然后可以继续循环，继续尝试创建 xmlhttp = new ActiveXObject(activexName); break; } catch(e){ }}}if (!xmlhttp) { alert("XMLHttpRequest对象创建失败!!"); return; } else { } xmlhttp.onreadystatechange=callback; xmlhttp.open("post","news.do?method=QuerySomeNews",true); xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); xmlhttp.send(null); } function callback(){ if(xmlhttp.readyState==4){ if(xmlhttp.status==200){ var responseXML=xmlhttp.responseXML; var yan=responseXML.getElementsByTagName("response"); var ta="<table class=STYLE2 width:100% border:0 id=ta>"; for(var i=0;i<yan.length;i++){ var y=yan; var title=y.childNodes.firstChild.data; var time=y.childNodes.firstChild.data; var nid=y.childNodes.firstChild.data; ta+="<tr id='aa'><TD align=middle width:14><IMG height:10 src='images/main_icon01.gif' width:10></TD>"; ta+="<td width=263 align=left><a href='news.do?method=queryById&nid="+nid+"' cursor=hand>"+title+"</a></td>"; ta+="<td align=right width=88> <DIV align=right><DIV align=right>"+time+"</DIV></DIV></td></tr>"; } ta+="</table>"; document.getElementById("res").innerHTML=ta; setTimeout("send()",6000); if(responseXML==null){ alert("数据没有传过来"); }else{ } } }}}</SCRIPT>
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