AjaxDemo

<!DOCTYPE html>

<html>

<head lang="en">

    <meta charset="UTF-8">

    <title></title>

</head>

<body>

<input type="button" id="bnt" value="请求"/>

<div id="d1"></div>

<script type="text/javascript">

    var bnt=document.getElementById('bnt')

    bnt.onclick=function (){

    //  1 创建对象

        var oAjax=null;

        if(window.XMLHttpRequest){

            oAjax=new XMLHttpRequest()

        }else{

            oAjax=new ActiveXObject("Microsoft.XMLHTTP")

        }

    //  2 连接服务器

        oAjax.open("GET","http://101.201.252.11/mt/main.php?case=news_list&hid=0?t="+Math.random(),true);

    //  3 发送请求

        oAjax.send(null)

    //接受服务器返回

        oAjax.onreadystatechange=function (){

            if(oAjax.readyState==4){

               if(oAjax.status==200){

                    console.log("开始处理数据");

                   var arr = JSON.parse(oAjax.responseText);

                   var data=arr.data_list;

                   console.log(data[3].content);

                   d1.innerHTML=data[3].content;

                   //console.log();

                    //arr.split(",")

                    //alert(arr[3])oAjax.responseText

                    //alert(oAjax.responseText)

               }else{

                   alert("请求失败")

               }

            }

        }

    }

</script>

</body>

</html>
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AjaxDemo

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