Set.prototype.add() - JavaScript | MDN
Try it
const set = new Set();
set.add(42);
set.add(42);
set.add(13);
for (const item of set) {
console.log(item);
// Expected output: 42
// Expected output: 13
}
Syntax
Parameters
Return value
The Set object.
Examples
Using add()
js
const mySet = new Set();
mySet.add(1);
mySet.add(5).add("some text"); // chainable
console.log(mySet);
// Set [1, 5, "some text"]
Specifications
| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-set.prototype.add |