JavaScript | Math.LOG2E property

The Math.LOG2E is a property in JavaScript which is simply used to find the value of base 2 logarithms 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 an example given below.

<script>  
  
// car is an object.  
var car = {};  
  
// car.name is a property of the given object.  
car.name = "Audi",  
  
    // car.sayModel is a function of the given object.  
    car.sayModel = function() {  
        document.write("A8 <br>");  
    }  
                  
    // printing property value.  
    document.write(car.name + '<br>');  
                  
car.sayModel();   
</script>  

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 a parameter because of 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:

Example 1:

<script> 
  // Here value of Math.LOG2E is printed. 
  document.write(Math.LOG2E); 
</script> 

Output:

1.4426950408889634

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

<script> 
  // function is being called. 
  function get_Value_of_base_2_lagarithm_of_e() 
  { 
      return Math.LOG2E; 
  } 
  
  // function is calling. 
  document.write(get_Value_of_base_2_lagarithm_of_e()); 
</script> 

Output:

1.4426950408889634

Example 3: Here we consider Math.LOG2E as a function but in actual it is a property that is why error as output is being shown.

<script> 
  // Here we consider Math.LOG2E as a function but  
  //in actual it  is a property that is why error  
  //as output is being shown. 
  document.write(Math.LOG2E(12)); 
</script> 

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:

Example:

<script> 
  // Value of Math.LOG2E is printed. 
  document.write(Math.LOG2E); 
</script> 

Output:

1.4426950408889634

Supported Browsers: The browsers supported by JavaScript Math.LOG2E property are listed below:

Google Chrome
Internet Explorer
Firefox
Opera
Safari

My Personal Notes

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