What properties are iterated over when using a for...in loop? code example

Example 1: for of loop javascript

const array1 = ['a', 'b', 'c'];

for (const element of array1) {
  console.log(element);
}

// expected output: "a"
// expected output: "b"
// expected output: "c"

Example 2: javascript for of loop

(function() {
  for (const argument of arguments) {
    console.log(argument);
  }
})(1, 2, 3);

// 1
// 2
// 3