What does this console entry mean?

Question

JavaScript

How is it written in the line 3 false and in the column number 2 one true, isn't it the same thing that is displayed in this record in different formats? How to understand it.

Answer 1

No need to panic. In JavaScript, all objects are passed by reference, with all the consequences.
This means that after the output to the console, the value of the array has changed. And when you unfold to see what's inside, you see the actual values ​​at the time of opening.
Just execute the code in the console, and open it later.

const arr = [false, false, false];
console.log(arr);
arr[2] = "test";