document.getElementById can't select more than one element

Question

I\'m working on loading. I have div #loading which is visible. And more divs #message which are hidden. I have js function.

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Answer 1

You cannot have same id twice in a document in order to select multiple elements group them by same Class rather than by id and then use the following to select them all.

document.querySelectorAll(".ClassName")

Or

document.getElementsByClassName(".ClassName");

Note that both methods returns a collection of all elements in the document with the specified class name, as a NodeList object.