This Array is not an Array!
const objArray = { 0: 'first', 1: 'second', 2: 'third', length: 3 } objArray.__proto__ = Object.create(Array.prototype) objArray.map(x => x.toUpperCase()) //=> [ 'FIRST', 'SECOND', 'THIRD' ] objArray.push('fourth') objArray //=> Array { [Iterator] 0: 'first', 1: 'second', 2: 'third', 3: 'fourth', length: 4 } Object.prototype.toString(objArray) //=> "[object Object]"
Haha, that is disgusting! I love it!
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This Array is not an Array!
Haha, that is disgusting! I love it!