How to repeat a string using JavaScript

In this article we will learn how to repeat a string in JavaScript.

It is very common to repeat a string in JavaScript in JavaScript.

Problem

Now we have a problem which is that we want to repeat a string.

Imagine we have a string like this:

"Hello"

And we want to repeat this string 3x times.

Expected output like this:

"HelloHelloHello"

How to solve this problem?

This problem is easy to solve, and fortunately there is a built-in function that does it for us called repeat().

Repeat a string using repeat() method

As we said before, we can use repeat method to repeat a string more than one time.

Let's see an example

// String
const string = "Hello";

// Repeat
const result = string.repeat(3);

// Result:
console.log(result);

Output

HelloHelloHello

The repeat() method constructs and returns a new string which contains the specified number of copies of the string on which it was called, concatenated together. MDN

Repeat a string using for loop

We can use for loop to repeat a string as well.

// String
let string = "Hello";

// Repeat
let repeatTimes = 3;

// Declare a variable
let result = "";

// For Loop
for (let i = 0; i < repeatTimes; i++) {
    result += string;
}

// Result:
console.log(result);

Output

HelloHelloHello

Thank you for reading

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