try_dom_xmlhttprequest_header 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>w3cschool在线教程(w3cschool.cn)</title>
<script>
function loadXMLDoc(url)
{
  if (window.XMLHttpRequest)
  {
    // IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
    xmlhttp=new XMLHttpRequest();
  }
  else
  {
    // IE6, IE5 浏览器执行代码
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
  xmlhttp.onreadystatechange=function()
  {
    if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
      document.getElementById('p1').innerHTML=xmlhttp.getAllResponseHeaders();
    }
  }
  xmlhttp.open("GET",url,true);
  xmlhttp.send();
}
</script>
</head>
<body>
<p id="p1"> getAllResponseHeaders() 函数返回资源的头部信息，例如 length, server-type, content-type, last-modified 等。</p>
<button onclick="loadXMLDoc('/statics/demosource/xmlhttp_info.txt')">获取头部信息</button>
</body>
</html>
 
 
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运行结果
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