How to find from elements with one to multiple class names just the ones which feature exactly a specific and sole class name (and not any other)?

Question

Example:

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const soleParentClassElementList = document.querySelectorAll('.parent')

With the above code line I would query both element nodes, but I want to query just the one(s) with a single parent class.

user_10669010 · Answer

this way...

document
  .querySelectorAll('[class="parent"]')
  .forEach(node => node.textContent = 'this one');

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