Array.prototype.values()

Il metodo values() restituisce un nuovo oggetto Array Iterator che contiene i valori per ogni indice nell'array.

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var a = ['a', 'b', 'c', 'd', 'e'];
var iterator = a.values();

console.log(iterator.next().value); // a
console.log(iterator.next().value); // b
console.log(iterator.next().value); // c
console.log(iterator.next().value); // d
console.log(iterator.next().value); // e

arr.values()

Un nuovo oggetto iteratore Array.

var arr = ['a', 'b', 'c', 'd', 'e'];
var iterator = arr.values();

for (let letter of iterator) {
  console.log(letter);
}

Array.prototype.values è una implementazionde di default di Array.prototype[Symbol.iterator].

Array.prototype.values === Array.prototype[Symbol.iterator]      //true

TODO: please write about why we need it, use cases.

• Array.prototype.keys()
• Array.prototype.entries()
• Array.prototype.forEach()
• Array.prototype.every()
• Array.prototype.some()