Question

40

rated 0 times [ 41] [ 1] / answers: 1 / hits: 16186 / 13 Years ago, thu, april 14, 2011, 12:00:00

I want to do the following

var my_json = {

    a : 'lemon',

    b : 1

}



function obj(json){

    this.a = 'apple';

    this.b = 0;

    this.c = 'other default';

}

after assigning

var instance = obj(my_json)

I want to get

instance.a == 'lemon'

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4 Years ago

answered 13 Years ago travion · Accepted Answer

for(var key in json) {

    if(json.hasOwnProperty(key)) {

        this[key] = json[key];

    }

}

The if block is optional if you know for sure that nothing is every going to extend Object.prototype (which is a bad thing anyway).