什么是Ajax
Ajax=异步JavaScript和XML
XHR响应
1 <!DOCTYPE html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>responsesXML属性</title>
6 <script>
7 function loadXMLDoc(){
8 var xmlhttp;
9 var txt,x,i;
10 if(window.XMLHttpRequest){
11 xmlhttp=new XMLHttpRequest();
12 }
13 else{
14 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
15 }
16 xmlhttp.onreadystatechange=function(){
17 if(xmlhttp.readyState == 4 && xmlhttp.status == 200){
18 xmlDoc=xmlhttp.responseXML;
19 console.log(xmlDoc)
20 txt='';
21 x=xmlDoc.getElementsByTagName('ARTIST');
22 for(i=0;i<x.length;i++){
23 txt=txt+x[i].childNodes[0].nodeValue+"<br>"
24 }
25 console.log(txt)
26 document.getElementById("myDiv").innerHTML=txt;
27 }
28 }
29 xmlhttp.open("GET","https://www.runoob.com/try/demo_source/cd_catalog.xml", true);
30 xmlhttp.send();
31 }
32 </script>
33 </head>
34 <body>
35 <h2>我收藏的CD</h2>
36 <div id="myDiv"></div>
37 <button type="button" onclick="loadXMLDoc()">获取我的CD</button>
38 </body>
39 </html>
标签：function,XMLHttpRequest,CD,AJAX,xmlhttp,txt,xmlDoc From： https://www.cnblogs.com/wenzm/p/17084141.html