JavaScript Math sqrt( ) Method

Below is the example of the Math sqrt() Method.

• Example:
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  <script type="text/javascript">     document.write(Math.sqrt(-2) + "<br>");      document.write(Math.sqrt(-2.56));           </script>

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• Output:

  NaN
  NaN
  

The Math.sqrt() method in JavaScript is used to square root of the number passed as parameter to the function.
Syntax

Math.sqrt(value)

Parameters: This method accepts a single parameter as mentioned above and described below:

• value which hold the number whose square root is to be calculated.

Returns: Square root of the number passed as parameter passed as parameter.

Below example illustrate the Mathe sqrt() method in JavaScript:

Input : Math.sqrt(4)
Output : 2

Input : Math.sqrt(-4)
Output : NaN

Errors and Exceptions:

• A non-numeric string passed as parameter returns NaN
• An array with more than 1 integer passed as parameter returns NaN
• A negative number passed as parameter returns NaN
• An empty string passed as parameter returns NaN
• An empty array passed as parameter returns NaN

More codes for the above method are as follows:
Program 1:

Output:

1.4142135623730951
1.6

Program 2:

Output:

NaN

Program 3:

Output:

4.06201920231798

Supported Browsers:

• Google Chrome
• Internet Explorer
• Firefox
• Opera
• Safari

AyushSaxena

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