JavaScript Program To Find The Square Root

In this post, we will learn how to find the square root of a number using JavaScript.

This program will take a number as an input from the user and calculate and print the square root of that number.

So, without further ado, let’s begin this tutorial.

Table of Contents

var num = prompt("Enter a Number");
var root = Math.sqrt(num);

// displays square root
console.log("The Square Root of " + num + " is " + root);

Output

The Square Root of 49 is 7

How Does This Program Work ?

The Math.sqrt() function returns the square root of a number. If the value of the number is negative, then Math.sqrt() returns NaN.

I hope after going through this post, you understand how to find the square root of a number using JavaScript.

If you have any query regarding the program, feel free to contact us in the comment section. We will be delighted to help you.

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