General purpose JavaScript snippets that fit in 2048 characters or less.

Bookmarklets.js

// Arrow key nav for videos
// - Left:  -5s
// - Right: +5s
// - Up:    +30s
// - Down:  -30s
javascript:var timeAdj = {'37': -5, '39': 5, '38': 30, '40': -30 }; document.addEventListener("keyup", function(e) { if (e.which > 36 || e.which < 41) { e.preventDefault(); document.querySelectorAll("video").forEach(function(vid) { vid.currentTime += timeAdj[e.which]; vid.play();});}});