Javascript 解析json字符串
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parse json string
提问by G-Man
I have the following Json string
我有以下 Json 字符串
{ "Users" : [
{ "Name" : "user99",
"Value" : "test"
},
{ "Name" : "test2",
"Value" : "test"
}
]
}
I am trying to parse it and print out each name and value - what is the easiest way to do this ? I tried jQuery.parseJSON but I do not know how to use it I guess
我正在尝试解析它并打印出每个名称和值 - 最简单的方法是什么？我试过 jQuery.parseJSON 但我猜我不知道如何使用它
Sample code would be great
示例代码会很棒
回答by Brad Christie
var json = '{"Users":[{"Name":"user999","Value":"test"},{"Name":"test2","Value":"test"}]}';
var json_parsed = $.parseJSON(json);
for (var u = 0; u < json_parsed.Users.length; u++){
var user = json_parsed.Users[u];
$('body').append($('<p>').html('User: '+user.Name+'<br />Value: '+user.Value));
}
Results in:
结果是：
<p>User: user999<br />Value: test</p>
<p>User: test2<br />Value: test</p>
jsFiddle Example: http://jsfiddle.net/bradchristie/XtzjZ/1/
jsFiddle 示例：http: //jsfiddle.net/bradchristie/XtzjZ/1/
回答by jondavidjohn
You actually have an array of objects so..
你实际上有一个对象数组，所以..
var obj = $.parseJSON(string);
var users = obj.users;
for x in users {
alert(users[x].Name);
alert(users[x].Value);
}
回答by Ray
You can use jQuery.parseJSON, here's an example:
你可以使用 jQuery.parseJSON，这是一个例子：
var jsonString = '{"key":"value","otherkey":"othervalue"}';
data = $.parseJSON(jsonString);
alert(data.key); // Shows: value
回答by peter
<script>
var str = '{"Users":[{"Name":"user999","Value":"test"},{"Name":"test2","Value":"test"}]}';
str = eval('('+str+')');
alert(str.Users[0].Name);
//var str = '{"x":{"a":"1"}}';
//alert(str.x.a);
</script>
回答by James Sumners
For the JSON you have given, $.parseJSONshould return an object, myObj, that can be accessed like so:
对于您提供的 JSON，$.parseJSON应该返回一个对象，myObj可以像这样访问：
var users = myObj.Users,
user0_name = users[0].Name;
