jQuery 4.0.0: First Major Update in Nearly 10 Years for 20th Anniversary

jQuery has launched version 4.0.0, its first significant update since 2014, celebrating 20 years of the popular JavaScript library.

Key changes include:

  • Dropped legacy support: No more compatibility with Internet Explorer 10 and earlier, Edge Legacy, Android Browser, iOS versions before the last three, or Firefox versions before the last two.
  • Removed deprecated APIs: APIs like jQuery.isArray, jQuery.trim, and jQuery.parseJSON are gone—use native JavaScript equivalents instead.
  • Modern codebase: Source code migrated to ES Modules for seamless integration with contemporary build tools.

This update streamlines jQuery for modern web development. Details from the official jQuery blog.

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