Converting Number to Thousand with Comma e.g 1000 to 1,000

Hi guys, Pls I need your assistance. How can I convert a number e.g 1000 to 1,000 as I am typing inside HTML textbox using JavaScript.? Thanks .

Firstly, welcome to the forums.

While we are primarily here to help people with their freeCodeCamp progress, we are open to people on other paths, too. Some of what you are asking is pretty trivial in the freeCodeCamp context, so you might find that if you’re not getting the instruction and material you need in your current studies, the fCC curriculum will really help you get started. At a modest guess I’d say investing a 4-5 hours working through the curriculum here will really pay off. You can find the curriculum at

With your current questions, we don’t have enough context to know what you already know or don’t know, so it is impossible to guide you without just telling you the answer (which we won’t do).

It is pretty typical on here for people to share a codepen / replit / jsfiddle example of what they have tried so that anyone helping has more of an idea of what help is actually helpful.

Please provide some example of what you’ve tried and I’m sure you’ll get more help.

Happy coding :slight_smile:

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