How to add an Item to a Set in JavaScript - Step by Step Examples

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How to add an Item to a Set in JavaScript ?

Answer

To add an item to a Set in JavaScript, you can use the add method of the Set object.

✐ Examples

1 Add an Item to a Set

In this example,

We have an existing set named mySet.
We use the add method to add a new item to mySet.

JavaScript Program

let mySet = new Set();
mySet.add("apple");
mySet.add("banana");
mySet.add("orange");
console.log("Set before adding item: ", mySet);
mySet.add("grape");
console.log("Set after adding item: ", mySet);

Output

Set before adding item:  Set(3) { 'apple', 'banana', 'orange' }
Set after adding item:  Set(4) { 'apple', 'banana', 'orange', 'grape' }

2 Add a Number to a Set

In this example,

We have an existing set named numberSet.
We use the add method to add a new number to numberSet.

JavaScript Program

let numberSet = new Set();
numberSet.add(1);
numberSet.add(2);
numberSet.add(3);
numberSet.add(4);
numberSet.add(5);
console.log("Set before adding number: ", numberSet);
numberSet.add(6);
console.log("Set after adding number: ", numberSet);

Output

Set before adding number:  Set(5) { 1, 2, 3, 4, 5 }
Set after adding number:  Set(6) { 1, 2, 3, 4, 5, 6 }

Summary

In this tutorial, we learned How to add an Item to a Set in JavaScript language with well detailed examples.

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How to add an Item to a Set in JavaScript - Step by Step Examples

How to add an Item to a Set in JavaScript ?

Answer

✐ Examples

1 Add an Item to a Set

JavaScript Program

Output

2 Add a Number to a Set

JavaScript Program

Output

Summary

More JavaScript Sets Tutorials