How to use Object.objsize() method In Javascript

Create an object variable and assign values to it
Create a variable that shows the size
Pass the object name to Object.objsize which further enters the function that calculates and returns the size and assigns it to the variable.

Example: This example shows the implementation of the above-explained approach.

JavaScript

Object.objsize = function(obj) { 
    let size = 0, key; 
  
    for (key in obj) { 
        if (obj.hasOwnProperty(key)) 
        size++; 
    } 
    return size; 
}; 
  
let object1 = { "rajnish":"singh", 
                "sanjeev":"sharma", 
                "suraj":"agrahari", 
                "yash":"khandelwal"
              }; 
  
let count = Object.objsize(object1); 
console.log(count);