To use getElementById with multiple IDs in JavaScript, we use the querySelectorAll method.
For instance, we write
const els = document.querySelectorAll(
"#myCircle1, #myCircle2, #myCircle3, #myCircle4"
);
to call querySelectorAll with the selector for the elements we want to select separated by commas.
A node list with all the selected elements is returned.
