Can querySelectorAll() be used with pseudo-elements?

Answers:

• No, querySelectorAll() cannot be used to select pseudo-elements like ::before and ::after. The querySelectorAll() method is designed to select actual DOM elements, but pseudo-elements are not part of the DOM; they are virtual and are created and styled by CSS.

  If you need to manipulate styles or properties of pseudo-elements, you typically do this through CSS by modifying the styles applied to the parent element that contains those pseudo-elements. Alternatively, if you need to interact with them in JavaScript, you'll have to change the styles of the parent element or dynamically add or remove classes that affect the styles of those pseudo-elements.

  For example, if you want to change the content or styles of a ::before pseudo-element, you might do something like this:

  const element = document.querySelector('.your-element');
  element.style.setProperty('--pseudo-element-property', 'new value');
  

  And in your CSS, you can use that variable:

  .your-element::before {
      content: var(--pseudo-element-property);
  }
  

  In summary, while you cannot select pseudo-elements directly with querySelectorAll(), you can manipulate them indirectly through their parent elements or by modifying the CSS.