Difference between ID selector and class selector in jQuery?

If you’ve used CSS before, you’re probably familiar with the distinction between ID and class selectors. The ID selector selects items by ID, such as #element1, whereas the class selector selects elements by CSS class. Use the ID selector when you just need to pick one element, and the class selector when you need to select a collection of elements with the same CSS class. There’s a strong possibility that you’ll be asked to develop code utilizing ID and class selectors during your interview. Another distinction between ID and class selectors is that the former utilizes the “#” character while the latter uses the “.” character.