Check If String Is a Prefix of Array LeetCode solution in JavaScript

1
var isPrefixString = function (s, words) {
2
  let str = words[0];
3
  if (s === words[0]) {
4
    return true;
5
  }
6
  for (let i = 1; i < words.length; i++) {
7
    if (s === str) {
8
      return true;
9
    }
10
    if (s.startsWith(str)) {
11
      str += words[i];
12
      continue;
13
    } else {
14
      return false;
15
    }
16
  }
17
  if (s !== str) {
18
    return false;
19
  }
20
  return true;
21
};