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Bind the spacebar to play/pause the video.
// ==UserScript==
// @name Youtube: Space to Pause
// @description Bind the spacebar to play/pause the video.
// @author Chris H (Zren)
// @icon https://youtube.com/favicon.ico
// @namespace http://xshade.ca
// @version 1
// @include http*://*.youtube.com/*
// @include http*://youtube.com/*
// @include http*://*.youtu.be/*
// @include http*://youtu.be/*
// ==/UserScript==
window.addEventListener('keydown', function(e) {
var playButton = document.querySelector('button.ytp-play-button');
var isKey = e.keyCode === 32; // Space
var validTarget = e.target === document.body || e.target === document.querySelector('#player-api');
if (validTarget && isKey && playButton) {
e.preventDefault();
playButton.click();
}
});