Question

85

How to read a json object in js

rated 0 times [ 87] [ 2] / answers: 1 / hits: 28189 / 12 Years ago, fri, january 25, 2013, 12:00:00

My controller has a method that is returning string representation of a jsonArray as

jsonArray.toString()

Now following is the ajax method

function loadPropertyFile(url) {

$.ajax({

    type: GET,

    url: url, 

    dataType: text,

    success: function(response){

        var obj = jQuery.parseJSON(response);

        alert(obj);

    }

});

}

Here the variable obj after parsing comes out to be

[{portal.home:Home},{displaytag.tracking.id:Item ID},{displaytag.tracking.itemName:Item Name},{displaytag.tracking.itemType:Type}]

Now I want to access the values from the keys in js

ie. I want to access the value of key displaytag.tracking.id

Problem is when I am doing console.log(obj[0][portal.home]); It is giving me error TypeError: obj[0] is undefined

What shall I do ?

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3 Years ago

answered 12 Years ago kevonmoisesf · Accepted Answer

First you need to parse the JSON string into JavaScript object, and then access the required property:

var obj = JSON.parse(json);

console.log(obj[0][portal.home]);

In older browsers which do not have native JSON support, you should use something like Crockford's json2.js, which will give you one; please don't use eval() on JSON, as it can lead to pretty bad things all around.