How to remove decimal part from a number in JavaScript

In this tutorial, we are going to learn about how to remove the decimal part from a number in JavaScript.

Consider we have the following number:

const num = 13.456

Now we need to remove the decimal part from the above number and print it like this:

13

Using the parseInt() function

In JavaScript, we can use the parseInt() function to remove the decimal parts from a number.

Here is an example:

const num = 109.42;
console.log(parseInt(num));

Output:

109

Alternatively, we can also use the Math.trunc() function.

const num = 109.42;
console.log(Math.trunc(num));

Note: The Math.trunc() function doesn’t support on Internet explorer.