What is the output of the following code? “`js const obj = {a: 1}; const copy = obj; copy.a = 99; console.log(obj.a); “`

Question

JavaScript Associate — Medium

What is the output of the following code? “`js const obj = {a: 1}; const copy = obj; copy.a = 99; console.log(obj.a); “`

Accepted Answer

The output of the code will be 99 because when `copy` is assigned the value of `obj`, it creates a reference to the same object. Therefore, changing the value of `copy.a` also changes `obj.a`.