我的第一个ajax程序没有输出???
var xmlhttp;if (window.XMLHttpRequest) {// code for Firefox, Opera, IE7, etc. xmlhttp=new XMLHttpRequest(); }else if (window.ActiveXObject) {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); }function ajax(i){ var url = "/chat.php"; xmlhttp.open("GET",url,true); xmlhttp.onreadystatechange = other(); xmlhttp.send(null);}function other(){ document.getElementById("php").innerHTML=xmlhttp.responseText;}