Question

53

Javascript object literal - possible to add duplicate keys?

rated 0 times [ 58] [ 5] / answers: 1 / hits: 27098 / 8 Years ago, fri, august 5, 2016, 12:00:00

In javascript, is is possible to add duplicate keys in object literal? If it is, then how could one achieve it after the object has been first created.

For example:

exampleObject['key1'] = something;

exampleObject['key1'] = something else;

How can I add the second key1 without overwriting the first key1?

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cameron

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1 Year ago

answered 8 Years ago pierce · Accepted Answer

No it is not possible. It is the same as:

exampleObject.key1 = something;

exampleObject.key1 = something else; // over writes the old value

I think the best thing here would be to use an array:

var obj = {

  key1: []

};



obj.key1.push(something); // useing the key directly

obj['key1'].push(something else); // using the key reference



console.log(obj);



// ======= OR ===========



var objArr = [];



objArr.push({

  key1: 'something'

});

objArr.push({

  key1: 'something else'

});



console.log(objArr);