Cookbook

Short, copy-pasteable recipes for the scenarios that come up in every Stimulus project. Each page is self-contained: one problem, one solution, one complete test.

Recipes

• Testing values — defaults, overrides, programmatic changes, value changed callbacks.
• Testing targets & classes — hasXTarget, xTargets, class bookkeeping.
• Testing outlets — two controllers, one DOM, one test.
• Mocking fetch — happy path, error path, request assertions.
• Fake timers — debounce, throttle, setTimeout, setInterval.
• Form validation — dispatched events, error targets, novalidate.
• Keyboard & a11y — getByRole, key grammar, aria-expanded, focus traps.

If you have a scenario not covered here, open an issue or a PR on GitHub.