javascript结合ajax读取txt文件内容

2019-10-26 18:49:05

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这篇文章主要介绍了javascript结合ajax读取txt文件内容，方法非常简单，很实用，这里推荐给大家

代码很简洁，这里就不多废话了，直接上源码

html代码

复制代码代码如下:

		
		 <!doctype html>
		 <html>
		  <head>
		      <meta charset="utf-8"/>
		      </head>
		      <body>
		          <button type="button"  onclick="show()">请求数据</button>
		         <script src="ajax.js"></script>
		         <script>
		           function show(){
		             Ajax('read.txt?datetime=new Date.getTime ',function(str){alert(str);},function(){alert('失败了');})
		           };
		         </script>
		      </body>
		 </html>

javascript代码

复制代码代码如下:

		
		  function Ajax(url,fnSucc,fnFaild)
		             {
		                  //1.创建ajax对象
		                if(window.XMLHttpRequest)
		                 {// code for IE7+, Firefox, Chrome, Opera, Safari
		                      var oAjax=new XMLHttpRequest();
		                 }
		                else
		                 {// code for IE6, IE5
		                     var oAjax=new ActiveXObject("Microsoft.XMLHTTP");
		                 }
		                 //2.链接服务器（打开服务器的连接）
		                 //open(方法，文件名，异步传输)
		                 oAjax.open('GET',url,true);
		                 //3.发送
		                 oAjax.send();
		                 //4.接收返回
		                 oAjax.onreadystatechange=function()
		                    {
		                      if (oAjax.readyState==4)
		                      {
		                        if(oAjax.status==200)
		                          { 
		                            fnSucc(oAjax.responseText);  
		                          }
		                       else
		                          {
		                           fnFaild(oAjax.status);
		                          }
		                      };
		                 };
		              }