JavaScript | Math.abs( ) function
The Math.abs() function in JavaScript is used to return the absolute value of a number. It takes a number as its parameter and returns its absolute value.
Syntax
Math.abs(value) Parameters : The number whose absolute value is to be found is passed as the parameter to this function. Returns : Absolute value of the number passed as parameter.
Example :
Input : Math.abs(-4) Output : 4 Input : Math.abs(0) Output : 0
Errors and Exceptions
1. A non-numeric string passed as parameter returns NaN
2. An array with more than 1 integer passed as parameter returns NaN
3. An empty variable passed as parameter returns NaN
4. An empty string passed as parameter returns 0
5. An empty array passed as parameter returns 0
Below are some examples that illustrate the Math.abs() function in JavaScript:
<!-- NEGATIVE NUMBER EXAMPLE --><script type="text/javascript"> document.write(Math.abs(-2)); document.write(Math.abs(-2.56)); </script> |
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Output:
2 2.56
<!-- POSITIVE NUMBER EXAMPLE --><script type="text/javascript"> document.write(Math.abs(2)); document.write(Math.abs(2.56)); </script> |
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Output:
2 2.56
<!-- STRING EXAMPLE --><script type="text/javascript"> document.write(Math.abs("Geeksforgeeks")); </script> |
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Output:
NaN
<!-- ADDITION INSIDE FUNCTION EXAMPLE --><script type="text/javascript"> document.write(Math.abs(7+9)); </script> |
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Output:
16
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