JavaScript | Math.sqrt( ) function

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

Math.sqrt(value)

Parameters: This function accepts a single parameter value which hold the number whose square root is to be calculated.
Returns: Square root of the number passed as parameter passed as parameter.

Example:

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

Below are some examples that illustrate the Math.floor() function in JavaScript:

• Example 1:
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  <!-- NEGATIVE NUMBER EXAMPLE --> <script type="text/javascript">     document.write(Math.sqrt(-2) + "<br>");      document.write(Math.sqrt(-2.56));           </script>

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  Output:

  NaN
  NaN
  

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

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  Output:

  1.4142135623730951
  1.6
  

• Example 3:
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  <!-- STRING EXAMPLE --> <script type="text/javascript">     document.write(Math.floor("Geeksforgeeks"));           </script>

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  Output:

  NaN
  

• Example 4:
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  <!-- ADDITION INSIDE FUNCTION EXAMPLE --> <script type="text/javascript">     document.write(Math.floor(7.2+9.3));            </script>

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  Output:

  4.06201920231798
  

Supported Browsers: The browsers supported by JavaScript Math.sqrt( ) function are listed below:

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



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AyushSaxena
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