get获取Json

前端代码

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <script type="text/javascript" src="js/jquery-2.1.4.min.js"></script>
        <title></title>
    </head>
    <body>
        <div >
            小丁的年龄是：<span id="dsh"></span>
        </div>
        <script type="text/javascript">
            $.ajax({   
               type: "get",   
               url:  "DB.json", 
               datatype: "json",//"xml", "html", "script", "html", "jsonp", "text".
               success: function (data,status) {
                   document.getElementById("dsh").innerHTML=data.teacher[1].age;
                   //var js=JSON.stringify(data);//转换成json字符串
               },
               error:   function (data,status) { alert("Ajax请求Json错误");}   
             });  
        </script>
    </body>
</html>

DB.json

{ "student": [
{ "name": "王老师",  "age": "40" },
{ "name": "丁老师",  "age": "30" }
],
"teacher": [
{ "name": "小王",  "age": "20" },
{ "name": "小丁",  "age": "10" }
] }

效果