JS: iterating over result of getElementsByClassName using Array.forEach

Question

I want to iterate over some DOM elements, I\'m doing this:

document.getElementsByClassName( \"myclass\" ).forEach( function(element, index, array) {
  //do s         


        

Answer 1

getElementsByClassName returns HTMLCollection in modern browsers.

which is array-like object similar to arguments which is iteratable by for...of loop see below what MDN doc is saying about it:

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.

example

for (const element of document.getElementsByClassName("classname")){
   element.style.display="none";
}