Javascript Math

Math is build-in object that has properties and methods for mathematical constants and functions. It allows you to perform mathematical tasks on numbers. Syntax

1. varpi_val = Math.PI;
2. varsin_val = Math.sin(30);

Examples

Math.pow() Math.pow(x,y) returns the value of x to the power of y:

<!DOCTYPE html>  
<html>  
<body>  
<h2>JavaScript Math.pow()</h2>  
<p>Math.pow(x,y) returns the value of x to the power of y:</p>  
<p id="demo"></p>  
<script>  
document.getElementById("demo").innerHTML = Math.pow(6,2);  
</script>  
</body>  
</html>

Try Now 

Output

Math.pow(x,y) returns the value of x to the power of y:
36

Math.sqrt()

Math.sqrt(x) returns the square root of x

<!DOCTYPE html>  
<html>  
<body>  
<h2>JavaScript Math.sqrt()</h2>  
<p>Math.sqrt(x) returns the square root of x:</p>  
<p id="demo"></p>  
<script>  
document.getElementById("demo").innerHTML = Math.sqrt(81);  
</script>  
</body>  
</html>

Try Now 

Output

Math.sqrt(x) returns the square root of x:
9

Math.ceil()

Math.ceil(x) returns the value of x rounded up to its nearest integer:

<!DOCTYPE html>  
<html>  
<body>  
<h2>JavaScript Math.ceil()</h2>  
<p>Math.ceil() rounds a number <strong>up</strong> to its nearest integer:</p>  
<p id="demo"></p>  
<script>  
document.getElementById("demo").innerHTML = Math.ceil(6.8);  
</script>  
</body>  
</html>

Try Now 

Output

Math.ceil() rounds a number up to its nearest integer:
7