Can querySelectorAll return an empty NodeList?

Answers:

• Yes, querySelectorAll can return an empty NodeList. This occurs when the specified CSS selector does not match any elements in the document.

  For example, if you run the following code:

  const elements = document.querySelectorAll('.non-existent-class');
  console.log(elements); // This will log an empty NodeList
  

  In this case, since there are no elements with the class non-existent-class, elements will be an empty NodeList. It's important to note that an empty NodeList is still an instance of the NodeList interface and has a length property of 0:

  console.log(elements.length); // Outputs: 0
  

  You can safely iterate over this empty NodeList without generating any errors.

Related Questions:

• What is the difference between querySelector() and querySelectorAll()?

• What does querySelectorAll() return if no elements match the selector?

• What is the maximum number of elements that querySelectorAll() can select?

• How do you check if the result of querySelectorAll() is empty?

• Can you use querySelectorAll() with multiple selectors?

• How does querySelectorAll() behave with dynamic content added to the DOM?

• Can querySelectorAll() return more than one NodeList?

• How can querySelectorAll() be used to select elements by class name?

• Does querySelectorAll() include elements that are not visible?

• How can you convert a NodeList returned by querySelectorAll() to an array?