How to loop through set - JavaScript

In this article we will learn how to loop through set.

It is very common to loop through set in JavaScript.

Problem

Now we have a problem, which is that we want to loop over the set.

Let's imagine we have a set like this:

// set
const set = new Set([1, 2, 3]);

And we want to iterate over this set.

How to solve this problem

As we said before, there is more than one solution to solve this problem:

• Using forEach
• Using for ... of

Iterate over set using forEach

We can use forEach to iterate over set elements.

Example

// set
const set = new Set([1, 2, 3]);

// Iterate using `forEach`
set.forEach(ele => {
    console.log(ele);
});

Output

1
2
3

The forEach() method executes a provided function once for each array element.

Iterate over set using for .. of

We can use for .. of to iterate over set elements as well.

Example

// set
const set = new Set([1, 2, 3]);

// Iterate using `for .. of`
for (let value of set) {
    console.log(value);
}

Output

1
2
3

Thank you for reading

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