JavaScript Math abs( ) Method

Last Updated : 07 Jul, 2020

Below is the example of the Math abs() method.

Example:

<script type="text/javascript">

document.write(Math.abs(-2)+"<br>");

document.write(Math.abs(-2.56));

</script>
Output:
```
2
2.56
```

The Math.abs() method 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: This method accepts a single parameter as mentioned above and described below:

value: 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.

Below examples illustrate the Math abs( ) method in JavaScript:

Example 1:
```
Input  : Math.abs(-4)
Output : 4
```
Example 2:
```
Input : Math.abs(0)
Output : 0
```

Errors and Exceptions:

A non-numeric string passed as parameter returns NaN.
An array with more than 1 integer passed as parameter returns NaN.
An empty variable passed as parameter returns NaN.
An empty string passed as parameter returns 0.
An empty array passed as parameter returns 0.

More example codes for the above method are as follows:

Program 1:

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

Output:

2
2.56

Program 2:

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

Output:

NaN

Program 3:

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

Output:

Supported Browsers:

Google Chrome
Internet Explorer
Firefox
Opera
Safari

My Personal Notes

Related Articles