for of

See also

Definition

The for…of statement creates a loop iterating over iterable objects, including: built-in String, Array, array-like objects (e.g., arguments or NodeList), TypedArray, Map, Set, and user-defined iterables.

It invokes a custom iteration hook with statements to be executed for the value of each distinct property of the object. 

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

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

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

let f = document.getElementById('id_fiches_temps_0-0-0-commentaire_iframe');
let elems = f.contentDocument.getElementsByClassName('note-btn btn btn-default btn-sm');
for (let element of elems) {
  console.log(element);
  for (let attribute of element.attributes) {
      console.log(attribute);
  }
}