Sometimes, we want to format an integer to a specific length in JavaScript.
In this article, we’ll look at how to format an integer to a specific length in JavaScript.
How to format an integer to a specific length in JavaScript?
To format an integer to a specific length in JavaScript, we use the string padStart method.
For instance, we write
const formatted = String(num).padStart(4, "0");
to convert num into a string with String.
Then we call padStart with 4 and '0' to prepend 0’s to the string until it has length 4.
Conclusion
To format an integer to a specific length in JavaScript, we use the string padStart method.
