Let’s see how you can format number with commas in JavaScript

Sometimes, you may need to format a number value with commas in your HTML pages to make it easier to read. You can transform a number value into a comma-separated string by using JavaScript. Here are several ways to do that.

Using toLocaleString() method

The Number.toLocaleString() method is a built-in method of the Number object that returns a locale-sensitive string representing the number. You can pass "en-US" as the parameter so that it will always create a thousand separator for your number.

Here’s an example:

let n = 234234234;
let str = n.toLocaleString("en-US");
console.log(str); // "234,234,234"

#javascript