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

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

Browser compatibility

See also

• Set
• Set.prototype.delete
• Set.prototype.has