JavaScript Program to Find the Square Root

To find the square root of a number in JavaScript, you can use the built-in Math.sqrt() method. Its syntax is:

Math.sqrt(number);

Here, the Math.sqrt() method takes a number and returns its square root.

Example: Square Root of a Number

Output

Enter the number: 9 
The square root of 9 is 3

Example 2: Square Root of Different Data Types

Output

The square root of 2.25 is 1.5
The square root of -4 is NaN
The square root of hello is NaN

• If 0 or a positive number is passed in the Math.sqrt() method, then the square root of that number is returned.
• If a negative number is passed, NaN is returned.
• If a string is passed, NaN is returned.