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JavaScript | Math.LOG2E property

The Math.LOG2E is a property in JavaScript which is simply used to find the value of base 2 logarithm of e, where e is an irrational and transcendental number approximately equal to 2.718
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 a example given below.

// car is an object.
var car = {};
  
// car.name is a propety of the given object.
car.name = "Audi",
  
    // car.sayModel is a function of the given object.
    car.sayModel = function() {
        console.log("A8");
    }
  
    // printing property value.
    console.log(car.name);
  
// printing function called value.
console.log(car.sayModel());

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 use ().
Syntax:

Math.LOG2E;

    Parameters:

  • Here nothing is as parameter because Math.LOG2E is not a function but it is a property.
  • Return Values:



  • It simply return the value of base 2 logarithm of e.

Example:

Input:
Math.LOG2E
Output: 1.4426950408889634

Explanation:
Here simply value of base 2 logarithm of e is shown as ouput.

Let’s see JavaScript code for Math.LOG2E property:
Code #1:

// Here value of Math.LOG2E is printed.
console.log(Math.LOG2E);

Output:

> 1.4426950408889634

Code #2:
Value of base 2 logarithm of e can be printed as in the form of function as shown below.

// function is being called.
function get_Value_of_base_2_lagarithm_of_e()
{
    return Math.LOG2E;
}
  
// function is calling.
console.log(get_Value_of_base_2_lagarithm_of_e());

Output:

> 1.4426950408889634

Errors and Exceptions:
Code #1:
Here we consider Math.LOG2E as a function but in actual it is a property that is why error as output is being shown.

// Here we consider Math.LOG2E as a function but in actual it
// is a property that is why error as output is being shown.
console.log(Math.LOG2E(12));

Output:

Error: Math.LOG2E is not a function

Application:
Whenever we need to find the value of base 2 logarithm of e that time we take the help of this property.In mathemaatics it needed a lot.
Let’s see JavaScript program on this application:

// Value of Math.LOG2E is printed.
console.log(Math.LOG2E);

Output:

> 1.4426950408889634


This article is attributed to GeeksforGeeks.org

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