# Math functions in JavaScript- Part 1 Posted by in JavaScript category on for Beginner level | Points: 250 | Views : 2439 ## 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. Full Name: Sourav Kayal
Member Level: Silver
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Member Since: 6/20/2013 2:09:01 AM
Country: India
http://www.dotnetfunda.com
I am .NET developer working for HelixDNA Technologies,Bangalore in healthcare domain. Like to learn new technology and programming language. Currently working in ASP.NET ,C# and other microsoft technologies.

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