See issue tracker for 3.6.0 tickets.

See issue tracker for 4.0.0 tickets.

• Migrate jQuery API to Jekyll and GitHub Pages

• Migrate CI to GitHub Actions and migrate testwarm to karma + browserstack

• Check minified code for syntax errors (see https://github.com/jquery/jquery/issues/3075)

• Add CSS linter for test CSS to enforce our CSS styleguide.

• Limit all test suite selection operations to #qunit-fixture (see https://github.com/jquery/jquery/issues/2880)

• Potential use of new DOM/ES features (e.g., gh-1868 and gh-1753)

  • Historically, new DOM/ES features have not been performant so we'll need to test them and weigh against increased code size and complexity.
  • May need new API surface for things like .usedStyle and it may be main-only
  • Replace document.hidden with document.visibilityState

• Start using ES6 modules and transpile to other formats.

• Add e2e tests.

  • focus tests - https://github.com/jquery/jquery/blob/a644101ed04d0beacea864ce805e0c4f86ba1cd1/test/unit/event.js#L2703, https://github.com/jquery/jquery/blob/a644101ed04d0beacea864ce805e0c4f86ba1cd1/test/unit/event.js#L2676

  • isDefaultPrevented, stopImmediatePropagation - https://github.com/jquery/jquery/blob/a644101ed04d0beacea864ce805e0c4f86ba1cd1/test/unit/event.js#L375

• Create a Web Download Builder

  • See gh-1691 for background.

• Add automated code coverage

  • See gh-1965 for background.

• Run unit tests with XHTML doctype

  • See gh-1731 for background.

• Change code style for checking method presence

  • See gh-3221 for background

• Rewrite speed framework

• Investigate possible unnecessary modularization of some variables

• Investigate possible reuse of support divs

  • See gh-2405 for background

• Investigate implementing jQuery (specifically .init) as an Array subclass

  • See gh-1754 for background

• Remove grunt-npmcopy and pull dependencies from node_modules.

• Drop support for EdgeHTML when the market share is low enough

  • See gh-4568 for background