JavaScript | Math.PI Property

The Math.PI is a property in JavaScript which is simply used to find the value of Pi i.e, in symbolic form Π which is nothing but it is the ratio of the circumference of a circle to its diameter, whose value is approximately 3.141. It is mainly used in a mathematics problem.
Difference between property and function in javascript.
Property in JavaScript is nothing but a value whereas method is a function this can be understood with the help of an example given below.

Output:

Audi
A8

Here as we can see that property of the object car, is going to store the string as “Audi” and it can be accessed with car.name.
sayModel is a method i.e, a function of the object and it can be accessed with car.sayModel().
It can be noticed that sayModel is just a function which uses ().

Syntax:

Math.PI

Parameters: Here nothing is passed as a parameter because, Math.PI is not a function but it is a property.

Return values: It simply return the value of PI i.e, Π

Example:

Input : Math.PI
Output: 3.141592653589793

Explanation:Here simply value of PI i.e, Π is shown as ouput.

Let’s see JavaScript code for Math.PI property:

• Example 1:
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  <script>   // Here value of Math.PI is printed.   document.write(Math.PI); </script>

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  Output:

  3.141592653589793

• Example 2:Value of PI i.e, Π can be printed as in the form of function as shown below.
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  <script>   // function is being called.   function get_Value_of_PI()   {       return Math.PI;   }      // function is calling.   document.write(get_Value_of_PI()); </script>

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  Output:

  3.141592653589793

Errors and Exceptions: Here we consider Math.PI as a function but in actual it is a property that is why error as output is being shown.

Error: Math.PI is not a function

Application: Whenever we need to find the value of anything related to PI that time we take the help of this property.In mathemaatics it needed a lot.
Let’s see the JavaScript program on this application:

• Example:Here we are going to find the value of the area of a circle with the given value of its radius.
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  <script>   // function is being called with radius 5 as parameter.   function area_of_circle(radius_of_the_circle)   {       return Math.PI * radius_of_the_circle * radius_of_the_circle;   }      // Here area of the circle is 5 unit.   document.write(area_of_circle(5)); </script>

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  Output:

  78.53981633974483
  

Supported Browsers: The browsers supported by JavaScript Math.PI Property are listed below:

• Google Chrome
• Internet Explorer
• Firefox
• Opera
• Safari

Kanchan_Ray

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