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JavaScript Math abs() Method

JavaScript Math abs() Method with example, javascript math methods, abs() method, round() method, ceil() method, floor() method, pow() method, random() method, sqrt() method, max() method, min() method, log() method, sin() method, cos() method, tan() method etc.

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JavaScript Math abs() method

The JavaScript math abs() method returns an absolute value of a given number. The abs() is a static method of Math.

Syntax

The abs() method is represented by the following syntax:

Math.abs(num)

Parameter

num - A number.

Return

An absolute value of a number.

JavaScript Math abs() method example

Here, we will understand abs() method through various examples.

Example 1

Let's see an example to print the absolute value of a number.

<script>
document.writeln(Math.abs(-4)+"<br>");
document.writeln(Math.abs(-7.8)+"<br>");
document.writeln(Math.abs('-4'));
</script>
Test it Now

Output:

4
7.8
4

Example 2

Let's see some cases where abs() method returns 0.

<script>
document.writeln(Math.abs(null)+"<br>");
document.writeln(Math.abs([])+"<br>");
document.writeln(Math.abs(''));
</script>
Test it Now

Output:

0
0
0

Example 3

Let's see some cases where abs() method returns NaN.

<script>
document.writeln(Math.abs("string")+"<br>");
document.writeln(Math.abs([2,3])+"<br>");
document.writeln(Math.abs());
</script>
Test it Now

Output:

NaN
NaN
NaN

Example 4

Let's understand the abs() method with your own test cases.

<script>
function display()
{
  var x=document.getElementById("num").value;
  document.getElementById("result").innerHTML=Math.abs(x);
}
</script>
<form>
  Enter a number: <input type="text" id="num">
  <input type="button"  onclick="display()" value="submit">
  </form>
  <p><span id="result"></span></p>
Test it Now
Next TopicJavaScript Math




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