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JavaScript Math random() Method

JavaScript Math random() 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 random() method

The JavaScript math random() method returns the random number between 0 (inclusive) and 1 (exclusive).

Syntax

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

Math.random()

Return

The random number between 0 (inclusive) and 1 (exclusive).

JavaScript Math random() method example

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

Example 1

Let's see an example to find out the random number between 0 and 1.

<script>
document.writeln(Math.random())
</script>
Test it Now

Output:

0.9118351487222218

Example 2

Let's see an example to find out the random number between two values.

<script>	
function getRandom(min, max) {
  return Math.random() * (max - min) + min;
}
document.writeln(getRandom(3,5));
</script>
Test it Now

Output:

3.9030538241130746

Example 3

Let's see an example to find out the random integer number between two values.

<script>	
function getRandom(min, max) {
  min = Math.ceil(min);
  max = Math.floor(max);
  return Math.floor(Math.random() * (max - min)) + min; 
}
document.writeln(getRandom(3,5));
</script>
Test it Now

Output:

3

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