获取Json对象的长度以及判断json对象是否为空
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2024-01-24 18:30:46
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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 }
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