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;
- Here nothing is as parameter because Math.LOG2E is not a function but it is a property.
- It simply return the value of base 2 logarithm of e.
Parameters:
Return Values:
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
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