假设json为：
Json代码
[{"name":'a',"age":1,"sex":"0","title":"hello","state":"0","id":"1"},{"name":'b',"age":2,"sex":"1","title":"bye","state":"0","id":"2"}]
以下是获取json对象的长度的方法：
Js代码
function getJsonObjLength(jsonObj) {
var Length = 0;
for (var item in jsonObj) {
Length++;
}
return Length;
}通过该方法就可以获取到。
Js代码
alert(getJsonObjLength(str)) //2
= = = = = = = = = = = = = = = = 判断json对象是否为空 = = = = = = = = = = = = = = = = = =
Js代码
var json={a:12,b:45}
for(var key in json){
alert(key); //a, b
alert(json[key]); //12, 45
}
