
json文件是一种轻量级的数据交互格式。一般在jquery中使用getJSON()方法读取。
$.getJSON(url,[data],[callback])
url:加载的页面地址
data: 可选项,发送到服务器的数据,格式是key/value
callback:可选项,加载成功后执行的回调函数
1.首先建一个JSON格式的文件userinfo.json 保存用户信息。如下:
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[ { "name" : "张国立" ,
"sex" : "男" ,
"email" : "zhangguoli@123.com"
}, { "name" : "张铁林" ,
"sex" : "男" ,
"email" : "zhangtieli@123.com"
}, { "name" : "邓婕" ,
"sex" : "女" ,
"email" : "zhenjie@123.com"
} ] |
2.其次建一个页面用于获取JSON文件里的用户信息数据,并显示
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> < head >
< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" />
< title >getJSON获取数据</ title >
< script type = "text/javascript" src = "js/jquery-1.8.2.min.js" ></ script >
< style type = "text/css" >
#divframe{ border:1px solid #999; width:500px; margin:0 auto;} .loadTitle{ background:#CCC; height:30px;} </ style >
< script type = "text/javascript" >
$(function (){ $("#btn").click(function () {
$.getJSON("js/userinfo.json", function (data){
var $jsontip = $("#jsonTip");
var strHtml = "123";
//存储数据的变量
$jsontip.empty();
//清空内容
$.each(data, function (infoIndex, info){
strHtml += "姓名:" + info["name"] + "< br >";
strHtml += "性别:" + info["sex"] + "< br >";
strHtml += "邮箱:" + info["email"] + "< br >";
strHtml += "< hr >"
})
$jsontip.html(strHtml);
//显示处理后的数据
})
})
}) </ script >
</ head >
< body >
< div id = "divframe" >
< div class = "loadTitle" >
< input type = "button" value = "获取数据" id = "btn" />
</ div >
< div id = "jsonTip" >
</ div >
</ div >
</ body >
</ html >
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da.json
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[ ] |
通过ajax获取json数据的实现代码
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<head> <meta http-equiv= "Content-Type" content= "text/html; charset=utf-8" />
<title>通过ajax获取json数据的实现代码</title> <script type= "text/javascript" src= "//www.jb51.net/jslib/jquery/jquery.min.js" ></script>
</head> <body> <div id= "ok" ></div>
<script> $( function () {
$.ajax({
type: "POST" ,
dataType: "json" ,
url: "da.json" ,
success: function (result) {
var str = "" ;
$.each(result, function (index,obj){
str += "<a href='" + obj[ "url" ] + "' target='_blank'><img src='" + obj[ "img" ] + "' /></a>" ;
});
$( "#ok" ).append(str);
}
});
}); </script> </body> </html> |
通过$.getJSON获取json的代码
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<head> <meta http-equiv= "Content-Type" content= "text/html; charset=utf-8" />
<title>通过$.getJSON获取json的代码</title> <script type= "text/javascript" src= "//www.jb51.net/jslib/jquery/jquery.min.js" ></script>
</head> <body> <div id= "ok" ></div>
<script> $( function (){
$.getJSON( "da.json" , function (data){
var $jsontip = $( "#ok" );
var strHtml = "" ; //存储数据的变量
$jsontip.empty(); //清空内容
$.each(data, function (infoIndex,info){
strHtml += "<a href='" + info[ "url" ] + "' target='_blank'><img src='" + info[ "img" ] + "' /></a>" ;
}) $jsontip.html(strHtml); //显示处理后的数据
}) }) </script> </body> </html> |