In this article, we will discuss the steps to finding the square root of a number using JavaScript.

## Understanding Square Roots

Before diving into the code, let’s take a moment to understand what square roots are. A square root of a number is a value that, when multiplied by itself, gives us the original number. For example, the square root of 9 is 3 because 3 * 3 = 9.

## JavaScript Math.sqrt() Function

JavaScript provides a built-in function for finding the square root of a number, called Math.sqrt(). The Math.sqrt() function is part of the Math object, which is a built-in object in JavaScript that provides mathematical constants and functions.

To find the square root of a number using Math.sqrt(), simply pass the number as an argument to the function. The function will return the square root of the number as a decimal number.

For example, to find the square root of 9, we can use the following code:

` ````
```var num = 9;
var sqrt = Math.sqrt(num);
console.log(sqrt);

This code will output the value 3, which is the square root of 9.

## Custom Square Root Function

In addition to using the Math.sqrt() function, we can also create our own custom square root function in JavaScript. This can be useful if we want to perform additional operations or calculations on the result.

Here is an example of a custom square root function in JavaScript:

` ````
```function sqrt(num) {
return Math.sqrt(num);
}

This function takes a number as an argument and returns the square root of the number by using the Math.sqrt() function.

## Using Square Roots in Web Applications

Finding the square root of a number is a common operation in web applications, especially in mathematical and scientific applications. For example, we can use square roots in geometry to find the length of the sides of a square, or in physics to find the distance between two points.

In addition to using square roots for mathematical operations, we can also use them to create interactive and visually appealing web pages. For example, we can use square roots to create a graph of a mathematical function or to animate the movement of an object on a web page.

Thanks for reading. Happy coding!