源代码:
<html><!DOCTYPE html> <html> <head> <script> function loadXMLDoc() { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("myDiv").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","/statics/demosource/demo_get.php?t=" + Math.random(),true); xmlhttp.send(); } </script> </head> <body> <h2>AJAX</h2> <button type="button" onclick="loadXMLDoc()">Request data</button> <p>Click the button several times to see if the time changes, or if the file is cached.</p> <div id="myDiv"></div> </body> </html>
运行结果：