jQuery vs. CSS3 :not() Selector: What are the Key Differences and Workarounds?

Dealing with :not()'s Inconsistencies

Certain differences exist between jQuery's :not() selector and the CSS3 standard. Here's a closer look:

Key Differences

1. Comma-separated Selector Lists: jQuery allows but CSS3 doesn't.
2. Complex Selector Combinations: jQuery permits, but CSS3 only supports simple selectors.
3. Combinators: jQuery supports, but CSS3 doesn't.

Workaround for Comma-separated Lists:

To resolve the issue in the provided example, chain multiple :not() selectors in CSS:

#sectors > div:not(.alpha):not(.beta):not(.gamma)

Why the Difference?

jQuery extends :not() to support arbitrarily complex selectors, aligning with .not() method functionality. However, CSS3's :not() is constrained to single simple selectors.

Future of :not():

Selectors Level 4 enhances :not() to accept complex selector chains, aligning with jQuery's approach. As support for this level grows, the inconsistencies will diminish in future browsers.

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