How to use Math.floor() In Javascript

The Math.floor() method rounds a number down to the nearest integer.

const num = 3.14159;
 // Rounds down to 2 decimal places
const roundedNum = Math.floor(num * 100) / 100;
console.log(roundedNum); // Output: 3.14

Rounding a number to a certain number of decimal places in JavaScript means adjusting the number to a specified precision after the decimal point. This is commonly done using methods like toFixed() or Math.round() to format the number for precise calculations or display.

Here’s how you can achieve it using these methods: