Set.prototype.add()

The add() method inserts a new element with a specified value in to a Set object, if there isn't an element with the same value already in the Set.

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Syntax

add(value)

Parameters

value

The value of the element to add to the Set object.

Return value

The Set object with added value.

Examples

Using the add() method

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 Language Specification
# sec-set.prototype.add

Browser compatibility

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See also