jQuery Accessing a JSON object?

Question

I get the following back from an $.ajax({ POST.....

[{"total_votes":1,"options":[{"id":40,"vote_count":0,"users":[]},{"id":41,"vote_count":1,"users":[{"photo":"xxxxxxxxxxx.png","name":"XXXXX,"id":1}]},{"id":42,"vote_count":0,"users":[]}]}]

so I try to get total_votes with:

    success: function(e) {
        console.log(e['total_votes'])       
    }

also try to get

        console.log( e['options'].length() )
        console.log( e['options'][0]['id'] )

Suggestions on why I keep getting undefined? Also is there a better way to loop through options?

Thanks

Answer 1

Your root object is an array, so you would need to do something like e[0]['total_votes'] . Also the length of an array is not a function its a property so you would want to do e[0].options.length or e[0]['options'].length .

Answer 2

使用$ .each（）循环遍历它们

Answer 3

根据您的示例JSON响应（它在数组中），它将是e .total_votes 。

Answer 4

在解除引用JSON对象之前，需要调用JSON.parse

Answer 5

Formatted ur Json this way, you can get the "total_votes" value like this

success: function(e) {
    console.log(e[0].total_votes);

}

 [
    {
        "total_votes": 1,
        "options": [
            {
                "id": 40,
                "vote_count": 0,
                "users": []
            },
            {
                "id": 41,
                "vote_count": 1,
                "users": [
                    {
                        "photo": "xxxxxxxxxxx.png",
                        "name": "XXXXX",
                        "id": 1
                    }
                ]
            },
            {
                "id": 42,
                "vote_count": 0,
                "users": [
                    {}
                ]
            }
        ]
    }
]

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