Stopwatch — start, pause, reset, and lap with precise timing

[venisha-kalola]

Project slug (e.g., snake, todo)

stopwatch

Summary

Implement a high-precision stopwatch using performance.now() or requestAnimationFrame with start/pause/reset/lap.

Details / Acceptance criteria

Acceptance Criteria:

• Start/pause/resume/reset controls work.
• Laps list shows timestamp and delta since previous lap.
• Time format: mm:ss.mmm (zero-padded).
• Continues to display accurate time when tab is inactive.
• Keyboard shortcuts: Space (start/pause), L (lap), R (reset).
• Accessible buttons with roles/labels.

Files:

• projects/stopwatch/index.html
• projects/stopwatch/styles.css
• projects/stopwatch/main.js

Tasks:

• Render time and controls.
• Timing loop using performance.now() delta.
• Manage laps array and render list.
• Add keyboard handlers and focus states.

Scope

• UI changes
• Logic changes
• Accessibility
• Tests (manual)

[chandra-011220]

@venisha-kalola please assign this issue to me

[Glynis1314]

@venisha-kalola can you assign this to me

[chandra-011220]

@venisha-kalola @Hrishikesh-Dalal I've asked first to assign me and I started working on it Please assign me as a part of hacktoberfest

[vaishnavi791]

@venisha-kalola I've recently worked on similar project related to this issue. Please assign me this issue to me.