可快速搭建，用于页面测试
python2
python -m SimpleHTTPServer 端口号
python3
python -m http.server
端口号
运行下目录新建一个测试文件test.html.来测试ajax
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<script>
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function loadXMLDoc()
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{
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var xmlhttp;
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if (window.XMLHttpRequest)
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{
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// IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
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xmlhttp=new XMLHttpRequest();
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}
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else
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{
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// IE6, IE5 浏览器执行代码
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xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
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}
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xmlhttp.onreadystatechange=function()
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{
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if (xmlhttp.readyState==4 && xmlhttp.status==200)
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{
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document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
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}
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}
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xmlhttp.open("GET","",true);
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xmlhttp.send();
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}
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</script>
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</head>
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<body>
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<h2>AJAX</h2>
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<button type="button" onclick="loadXMLDoc()">请求数据</button>
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<div id="myDiv"></div>
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</body>
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</html>
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