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How to loop over DOM elements from querySelectorAll

TL;DR: Use the for..of loop

The querySelectorAll() method run on document returns a list of DOM elements that satisfy the selectors query.

It returns a list of elements, which is not an array but a NodeList object.

The easiest way to loop over the results is to use the for..of loop:

for (const item of document.querySelectorAll('.buttons')) {
  // something
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