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80

Converting Object to Array using ES6 features

rated 0 times [ 83] [ 3] / answers: 1 / hits: 123092 / 10 Years ago, sat, august 9, 2014, 12:00:00

Given a javascript object, how can I convert it to an array in ECMAScript-6 ?

For example, given:

 var inputObj = {a:'foo', b:[1,2,3], c:null, z:55};

The expected output would be:

 ['foo', [1,2,3], null, 55]

The order of the elements in the result is not important to me.

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naomim

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3 Years ago

answered 10 Years ago jackie · Accepted Answer

Use (ES5) Array::map over the keys with an arrow function (for short syntax only, not functionality):

let arr = Object.keys(obj).map((k) => obj[k])

True ES6 style would be to write a generator, and convert that iterable into an array:

function* values(obj) {

    for (let prop of Object.keys(obj)) // own properties, you might use

                                       // for (let prop in obj)

        yield obj[prop];

}

let arr = Array.from(values(obj));

Regrettably, no object iterator has made it into the ES6 natives.