How does this function reverse this string?

Question

 function reverse(str) { var reversed = ''; for (let el of str) { reversed = el + reversed; } return reversed; } console.log(reverse('baca')); 

The out put of this code is acab . but how?

As far as i know when i add a empty string with a value it will create an extra space after that but how it reversed? I have tried 1 day long for under standing reversed = el + reversed; this line but i found that it will be b + ' ' + a + ' ' + c + ' ' + a .

But how it reversed after return ...please help me.

Answer 1

It's a loop, think about how the loop is iterating over each character.

Iteration 1: 'b' + '' = 'b'

Iteration 2: 'a' + 'b' = 'ab'

Iteration 3: 'c' + 'ab' = 'cab'

Iteration 4: 'a' + 'cab' = 'acab'