Roadmap

jQuery 3.0 and jQuery Compat 3.0

See issue tracker for 3.0.0 tickets.

Ongoing work

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

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

• Improve modularity (e.g., gh-1864)

• Start using ES6 modules and transpile to other formats.

  • PEP has already started using ES6 modules: jquery/PEP#157
  • QUnit is next: jquery/qunit#707

• Improve support for "Web Components" features like ShadowRoot

  • See gh-1748, gh-1784, gh-1976.

• Reconcile invalid input behavior across the API. This is to be done in stages.

  • See gh-2134

• 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

• Add automated code coverage

Refactoring efforts

• Explore simplification of jQuery.support

• Investigate possible unnecessary modularization of some variables.

• Investigate possible reuse of support divs

• Standardize the way we check node disconnectedness

  • See gh-2404

• Reduce cyclomatic complexity of effects

• Reduce cyclomatic complexity of manipulation