Set.prototype[@@iterator]() - JavaScript 编辑

The initial value of the @@iterator property is the same function object as the initial value of the values property.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

mySet[Symbol.iterator]

Return value

The Set iterator function, which is the values() function by default.

Examples

Using [@@iterator]()

const mySet = new Set();
mySet.add('0');
mySet.add(1);
mySet.add({});

const setIter = mySet[Symbol.iterator]();

console.log(setIter.next().value); // "0"
console.log(setIter.next().value); // 1
console.log(setIter.next().value); // Object

Using [@@iterator]() with for..of

const mySet = new Set();
mySet.add('0');
mySet.add(1);
mySet.add({});

for (const v of mySet) {
  console.log(v);
}

Specifications

Specification
ECMAScript (ECMA-262) The definition of 'Set.prototype[@@iterator]' in that specification.

Browser compatibility

BCD tables only load in the browser

See also

• Set.prototype.entries()
• Set.prototype.keys()
• Set.prototype.values()