jQuery get all divs which do not have class attribute

Question

get all divs which has class attribute

$('div[class]')

get all divs which do not have class attribute

$('div[class!=""]')

This code works but I don't understand why it works. If the above code works then the code for all divs with class attribute should be

$('div[class=""]') 

which does not yield any result.

Answer 1

Try it with the :not() pseudo-class selector:

$('div:not([class])')

---

Edit

The description for the jQuery selectors say:

• [attribute]
  Matches elements that have the specified attribute.
• [attribute=value]
  Matches elements that have the specified attribute with a certain value.
• [attribute!=value]
  Matches elements that either don't have the specified attribute or do have the specified attribute but not with a certain value.

This means div[class=""] would select all DIV elements that have a class attribute specified with an empty value.

But the last selector is a proprietary selector of jQuery and not a CSS selector. You would need to use :not() to select all DIV elements that do not have a class:

div:not([class])