The JavaScript Math sqrt( ) Method in JavaScript is used to square the root of the number passed as a parameter to the function.
Syntax:
Math.sqrt(value)
Parameters: This method accepts a single parameter as mentioned above and described below:
- Value: which holds the number whose square root is to be calculated.
Returns: Square root of the number passed as a parameter.
Below is an example of the Math sqrt() Method.
Example:
<script type="text/javascript">
console.log(Math.sqrt(-2));
console.log(Math.sqrt(-2.56));
</script> |
Output:
NaN NaN
Example 1:
Input : Math.sqrt(4) Output : 2
Example 2:
Input : Math.sqrt(-4) Output : NaN
Errors and Exceptions:
- A non-numeric string passed as a parameter returns NaN
- An array with more than 1 integer passed as a parameter returns NaN
- A negative number passed as a parameter returns NaN
- An empty string passed as a parameter returns NaN
- An empty array passed as a parameter returns NaN
More codes for the above method are as follows:
Program 1:
<script type="text/javascript">
console.log(Math.sqrt(2) + "<br>");
console.log(Math.sqrt(2.56));
</script> |
Output:
1.4142135623730951 1.6
Program 2:
<script type="text/javascript">
console.log(Math.floor("Geeksforgeeks"));
</script> |
Output:
NaN
Program 3:
<script type="text/javascript">
console.log(Math.floor(7.2+9.3));
</script> |
Output:
4.06201920231798
We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.
Supported Browsers:
- Google Chrome 1 and above
- Internet Explorer 3 and above
- Firefox 1 and above
- Opera 3 and above
- Safari 1 and above
We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.