Finding trailing zeros of a factorial JavaScript

Given an integer n, we have to write a function that returns the number of trailing zeroes in n!.

For example −

trailingZeroes(4) = 0
trailingZeroes(5) = 1
because 5! = 120
trailingZeroes(6) = 1

Example

const num = 17;
const findTrailingZeroes = num => {
   let cur = 5, total = 0;
   while (cur 
Output
And the output in the console will be −
3
1
0