In this article we will learn various math function in JavaScript

## Math functions in JavaScript- Part 1

In this article we will learn various math functions in
JavaScript. Math functions are needed to perform mathematical operation in
application. Let’s learn one by one of them.

##### round() function to get absolute value

round() function discard the fraction part from a number. In
this example we are using round() function on a real number. Have a look on
below example.

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

</head>

<body>

<script>

var number = 10.234567;

console.log("Abstract value is:" + Math.round(number));

</script>

</body>

</html>

##### Ceil() function

Ceil() function is used to get higher rounded value of any
real number. In this example we are applying ceil() function to a real variable
called “number”.

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

</head>

<body>

<script>

var number = 10.234567;

console.log("Ceil value is :- " + Math.ceil (number));

</script>

</body>

</html>

The ceil() function is returning the next rounded value
which is 11 in this article.

##### floor() function

It is nothing but opposite of ceil() function. The floor
function returns the immediate lower round figure value. Try to understand
below example.

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

</head>

<body>

<script>

var number = 10.234567;

console.log("Floor value is :- " + Math.floor (number));

</script>

</body>

</html>

##### max function

max() function can return the maximum value from a set of
value. In this example we are passing three values as argument of max()
function.

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

</head>

<body>

<script>

var a = 100;

var b = 200;

var c = 300;

console.log("Maximum value is :- " + Math.max(a,b,c));

</script>

</body>

</html>

##### log function

log() function will return the logarithmic value of a number. In this example we are
supplying 10 as argument of log function.

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

</head>

<body>

<script>

console.log("Log of 10 is :- " + Math.log(10));

</script>

</body>

</html>

Here is log value of 10.

##### PI property of math object

In this example we will learn PI property of Math object. We
know that PI is nothing but a constant in mathematics and we are printing PI
value of math object.

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

</head>

<body>

<script>

console.log("Value of PI is :- " + Math.PI);

</script>

</body>

</html>

##### Sqrt() function

Sqrt() function returns
square root value of given number. We are passing 3 as a argument of sqrt()
function.

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

</head>

<body>

<script>

console.log("Square root of 3 is :- " + Math.sqrt(3));

</script>

</body>

</html>

##### Conclusion:-

In this article we have learned few important math functions
of JavaScript.