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25–48 of 51 · Most stars

AutoNumeric is a standalone library that provides live as-you-type formatting for international numbers and currencies.

  • autonumeric
  • javascript
  • javascript-library
  • maskedinput

Tame the Web MIDI API. Send and receive MIDI messages with ease. Control instruments with user-friendly functions (playNote, sendPitchBend, etc.). React to MIDI input with simple event listeners (noteon, pitchbend, controlchange, etc.).

  • web-midi-api
  • web-midi
  • midi
  • webmidi

Tested JavaScript snippets that measure and debug web performance. Your AI agent runs them for you, or you run them yourself in DevTools: the same code every time.

  • performance
  • performance-analysis
  • performance-metrics
  • snippets

Accessibility-first browser & computer use for AI agents — one MCP server for every harness (Codex, Claude Code, OpenCode, Antigravity). Instruments the DOM/accessibility tree via CDP instead of screenshot loops: diffed snapshots, stable element refs, trusted input, typed errors. Zero dependencies

JavaScript/Node.js utility. Returns `true` if the value is a number or string number. Useful for checking regex match results, user input, parsed strings, etc.

  • number
  • is
  • isnan
  • javascript