Need explanation for this JavaScript code

Question

var x = "2*2";
var y = 4;
var z = eval(x + y);
alert(z);

Output is 48 but I don't understand why.

Answer 1

1. It declares x with the string expression of "2*2" to indicate multiplication of 2 by 2 without actually solving it.
2. It declares y with the number 4.
3. It declares z. x + y is appending the y value (4) to the x ("2*2") because x is the string, making it a 2*24, and evaluates it, resulting in the answer being 48.

Answer 2

Now I understand, thank you ☺

Answer 3

EoflaOE Thank you !

Answer 4

You are welcome!

Answer 5

You are welcome