Iterate JSON Object String

I am a javascript noob. I have a JSON string created by google gson API after creating the json string which I am passing it to my javascript function. So in a javascript variable

Solution 1:

You can get it into a native JavaScript object with JSON.parse:

var obj = JSON.parse(yourJSONString);

Then you can iterate the keys with a standard for in loop

for(var k in obj)
    if ({}.hasOwnProperty.call(obj, k))
        console.log(k, " = ", obj[k]);

Or access particular keys like validationCode or caseNumber directly:

var caseNum = obj.caseNumber;
var validationCode = obj.validationCode;

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Note that really old browsers don't support JSON.parse, so if you want to support them, you can either use Papa Crockford's json2, or jQuery, which has a parseJSON utility method.

Solution 2:

You could do a for ... in to loop through the object properties:

var person={fname:"John",lname:"Doe",age:25};

var x;

for (x in person)
{
   document.write(person[x] + " ");
}

http://www.w3schools.com/js/js_loop_for_in.asp

Solution 3:

If you are using JQuery framework you can use : jQuery.parseJSON

If not you can use JSON.parse() or you can use eval (which is less safe).