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> 

/div>

Output:

2
2.56

<!-- POSITIVE NUMBER EXAMPLE -->
<script type="text/javascript"> 
    document.write(Math.abs(2));  
    document.write(Math.abs(2.56));           
</script> 

Output:

2
2.56

<!-- STRING EXAMPLE -->
<script type="text/javascript"> 
    document.write(Math.abs("Geeksforgeeks"));           
</script> 

Output:

NaN

<!-- ADDITION INSIDE FUNCTION EXAMPLE -->
<script type="text/javascript"> 
    document.write(Math.abs(7+9));            
</script> 

Output:

JavaScript | Math.abs( ) function

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