How to use sqrt in JavaScript

In this article, I will explain use of sqrt() method in JavaScript.
  • 1968

JavaScript sqrt() Method

  • sqrt() method of math object returns the square root of a number.

  • In sqrt() method, the value of number is negative, sqrt method returns none.

Syntax

Math.sqrt(x)

  • x is a Required number.

Example

In the following example show to sqrt() method returns square root of value of numbers.

<html>

<head>

<title>JavaScript Math sqrt() Method</title>

</head>

<body>

<h3 style="color:red">JavaScript sqrt() Method Example</h3>

<script type="text/javascript">

    var a = Math.sqrt(25);

    document.write("First Test square root Value : " + a);

    var b = Math.sqrt(36);

    document.write("<br />Second Test square root Value : " + b);

    var c = Math.sqrt(5);

    document.write("<br />Third Test square root Value : " + c);

    var d = Math.sqrt(-4);

    document.write("<br />Fourth Test square root Value : " + d);

</script>

</body>

</html>

Output

sqrt method.jpg

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