jQuery 获取 Json 对象的长度
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Get Length Of Json object
提问by droidev
I have json object which is returned from php file, the json values are as follows
我有一个从 php 文件返回的 json 对象，json 值如下
{
"0": {
"id": "35",
"name": "first name",
"date": "2014-03-03",
"age": "25"
},
"1": {
"id": "36",
"name": "name",
"date": "0000-00-00",
"age": "25"
},
"2": {
"id": "37",
"name": "myname",
"date": "0000-00-00",
"age": "25"
},
"average_age": 25,
"count": 3
}
How do I get the count of values other than average_age and count that is for the given json object i want to get 3 as length in jQuery
我如何获得除average_age以外的值的计数和给定json对象的计数，我想在jQuery中获得3作为长度
回答by droidev
I have got the answer
我有答案
Object.keys(result).length // returns 5
UPDATE
更新
From the comment this does not work on IE 7 and 8
根据评论，这不适用于 IE 7 和 8
回答by John S
Try:
尝试：
var count = 0;
while (obj[count]) {
count++;
}
回答by kol
To "get the count of values other than average_ageand count", you can do something like this:
要“获取average_age和count”以外的值的计数，您可以执行以下操作：
function getCount(obj) {
var count = 0,
prop;
for (prop in obj) {
if (obj.hasOwnProperty(prop) && prop !== "average_age" && prop !== "count") {
count += 1;
}
}
return count;
}
var str = '{"0":{"id":"35","name":"Ahamed shajeer","date":"2014-03-03","age":"25"},"1":{"id":"36","name":"Meshajeer","date":"0000-00-00","age":"25"},"2":{"id":"37","name":"Iam shajeer","date":"0000-00-00","age":"25"},"average_age":25,"count":3}',
obj = JSON.parse(str);
console.clear;
console.log(getCount(obj));
Result:
结果：
3
You don't need jQuery. Anyway, why don't you want to use the countfield directly?
你不需要jQuery。无论如何，您为什么不想count直接使用该字段？
回答by Gustavo Gutiérrez
This way worked for me:
这种方式对我有用：
var jsonObject= JSON.stringify(response); var count = JSON.parse(jsonObject).length;
var jsonObject= JSON.stringify(response); var count = JSON.parse(jsonObject).length;
