Question

168

How to check if a JSON response element is an array?

rated 0 times [ 171] [ 3] / answers: 1 / hits: 67889 / 15 Years ago, thu, june 4, 2009, 12:00:00

I am receiving the next JSON response

    {

    timetables:[

        {id:87,content:B,language:English,code:en},                                                

        {id:87,content:a,language:Castellano,code:es}],

    id:6,

    address:C/Maestro José

    }

I would like to achieve the next pseudo code functionality

for(var i in json) {            

    if(json[i]  is Array) {

    // Iterate the array and do stuff

    } else {

    // Do another thing

    }

}

Any idea?

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answered 15 Years ago ibrahimgilbertoz · Accepted Answer

There are other methods but, to my knowledge, this is the most reliable:

function isArray(what) {

    return Object.prototype.toString.call(what) === '[object Array]';

}

So, to apply it to your code:

for(var i in json) {                    

    if(isArray(json[i])) {

    // Iterate the array and do stuff

    } else {

    // Do another thing

    }

}