[Ajax]便于在html页面中引用javascript显示后台数据的一段ajax代码

function createObject() { var requestC; if(window.XMLHttpRequest) { requestC=new XMLHttpRequest(); } if(!requestC) { requestC=new ActiveXObject('Msxml2.XMLHTTP'); if(!requestC) { requestC=new ActiveXObject('Microsoft.XMLHTTP'); } if(!requestC) { requestC=new ActiveXObject("Msxml2.XMLHTTP.3.0"); } } return requestC; } function getUrl(url){ var t=createObject(); if(t) { t.open("GET", url, false); t.setRequestHeader("Cache-Control","no-cache"); t.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); t.send(null); return t.responseText; } } document.write(getUrl("/help/log.aspx"));