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JavaScript SQRT

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The JavaScript SQRT function is one of the JavaScript Math function and it is used to find the square root of a specified expression or an individual number. In this article we will show you, How to use SQRT() function in JavaScript Programming language with example.

Syntax of a JavaScript SQRT Function

The basic syntax of the SQRT Function in JavaScript Programming language is as shown below:

Math.sqrt(number);

Number: It can be a number or a valid numerical expression.

  • If the number argument is positive integer, SQRT() function will return the square root of a given value.
  • If the number argument is Negative integer, JavaScript Square root function will return NaN.
  • When the number argument is not a number, SQRT() function will return NaN.
  • If the number argument is Null, SQRT() function will return Zero.

JavaScript SQRT Function Example

The JavaScript SQRT function is used to find the square root of a given number.

In this example, We are going to find the JavaScript square root of different data types and display the output

JAVASCRIPT CODE

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript SQRT Function </title>
</head>
<body>
  <h1> JavaScript SQRT Function </h1>
  <p id = "Pos"></p>
  <p id = "Neg"></p>
  <p id = "Dec"></p>
  <p id = "Neg_Dec"></p>
  <p id = "Str"></p>
  <p id = "Null"></p>
  <script>
    document.getElementById("Pos").innerHTML = Math.sqrt(10);
    document.getElementById("Neg").innerHTML = Math.sqrt(-10);
    document.getElementById("Dec").innerHTML = Math.sqrt(14.05);
    document.getElementById("Neg_Dec").innerHTML = Math.sqrt(-6.05);
    document.getElementById("Str").innerHTML = Math.sqrt("JavaScript");
    document.getElementById("Null").innerHTML = Math.sqrt(null);
  </script>
</body>
</html>

ANALYSIS

  1. First two statements, We used the SQRT() Function directly on both the Positive integer and negative integer. From the below screenshot you can observe that, SQRT() Function is returning NaN (Not a Number) as output for negative integer
  2. Next four statements, We used the JavaScript SQRT() Function on both the Positive and negative Decimal values. As we said before, SQRT() Function is returning NaN (Not a Number) as output for negative decimal.
  3. Next statement, We tried SQRT() Function on String value. As we said before, this will return NaN (Not a Number) as output
  4. Last, We tried JavaScript SQRT() Function on Null value and it return Zero as output

OUTPUT

JavaScript SQRT Function

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