CODEWITHSUNDEEP
javascript
Utku Erdoğanaras
Utku Erdoğanaras

Reputation: 13

Is there any difference between the following?

I am trying to understand how actually memory allocation works and I have a question.

var a = {name: 'John', age: '20'};
console.log(a.name);

and 

var a = {name: 'John', age: '20'};
var name = a.name;
console.log(name);

I know that both of them give the same result, but I want to know whether the memory usage of both of these codes is the same or not.

Upvotes: 0

Views: 76

Answers (1)

Mario Perez
Mario Perez

Reputation: 3377

Each declared variable will occupy a space in your memory, in the first example:

var a = {name: 'John' , age: '20'};
console.log(a.name);

var a is declared and thus a space is reserved for it, and in the second example:

var a = {name: 'John' , age: '20'};
var name = a.name;
console.log(name);

Besides from declaring var a, you have also reserved another space for var name

This link from MDN can provide a better insight:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Memory_Management

Hope this was useful for you!

Upvotes: 1

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