key
.Array.prototype.map()
to map the array of objects to the value of key
for each one.const pluck = (arr, key) => arr.map(i => i[key]);
const simpsons = [ { name: 'lisa', age: 8 }, { name: 'homer', age: 36 }, { name: 'marge', age: 34 }, { name: 'bart', age: 10 } ]; pluck(simpsons, 'age'); // [8, 36, 34, 10]
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