jquery下 json的解析
折腾一天，回家测试结果好好的，单位里就出问题！气氛，贴上代码，前台代码是 get与getJSON不同用法，一个需要eval下，另一个不需要把它变成对象。记一笔
需要变成对象的写法
Code1
function LoadCityData() 
{2
//alert("ddd")3
$("#ddlCityName").empty();4
$.get(5
"Handler.ashx",6
{ name: "test", age: 20 },7
8
function(json) {9
10
$("#ddlCityName")[0].options.add(new Option("城市", -1));11
12
var dataObj = eval("(" + json + ")"); //13
$.each(dataObj.root, function(i, n) {14
// alert(json.root);15
var item = new Option(n.name, n.value)16
$("#ddlCityName")[0].options.add(item)17
})18
})19
};
后台：
Code1
using System;2
using System.Web;3
4
public class Handler : IHttpHandler {5
6
public void ProcessRequest (HttpContext context) {7
context.Response.ContentType = "text/plain";8
9
string data="{ root: [ {name:'1',value:'0'}, {name:'6101',value:'西安市'},{name:'6102',value:'铜川市'}, {name:'6103',value:'宝鸡市'}, {name:'6104',value:'咸阳市'}, {name:'6105',value:'渭南市'}, {name:'6106',value:'延安市'}, {name:'6107',value:'汉中市'}, {name:'6108',value:'榆林市'}, {name:'6109',value:'安康市'}, {name:'6110',value:'商洛市'} ] }";10
11
12
context.Response.Write(data);13
}14
15
public bool IsReusable {16
get {17
return false;18
}19
}20
21
}
前台：
Code1
<html xmlns="http://www.w3.org/1999/xhtml">2
<head runat="server">3
<title></title>4
5
<script src="jquery-1.3.2-vsdoc2.js" type="text/javascript"></script>6
7
<script>8
$(document).ready(function() {9
10
$("#ddlProvinceName").unbind("change").change(function() {11
12
LoadCityData();13
})14
15
16
17
});18
19
20
function LoadCityData() {21
//alert("ddd")22
$("#ddlCityName").empty();23
$.getJSON(24
"Handler.ashx",25
{ name: "test", age: 20 },26
27
function(json) {28
29
$("#ddlCityName")[0].options.add(new Option("城市", -1));30
$.each(json.root, function(i, n) {31
alert(json.root[i]);32
var item = new Option(n.name, n.value)33
$("#ddlCityName")[0].options.add(item)34
})35
})36
};37
38
39
40
41
42
43
</script>44
</head>45
<body>46
<form id="form1" runat="server">47
<div>48
<select id="ddlProvinceName">49
<option value="1">1</option>50
<option value="1">1</option>51
<option value="1">5</option>52
<option value="1">1</option>53
<option value="1">2</option>54
<option value="1">4</option>55
<option value="1">1</option>56
<option value="1">1</option>57
<option value="1">6</option>58
</select>59
60
<select id="ddlCityName">61
</select>62
</div>63
</form>64
</body>65
</html>