Youtube: UpDown to Scroll

Scroll up/down when using home/end/up/down arrow instead of controlling the volume.

当前为 2017-03-21 提交的版本，查看最新版本。

换行

// ==UserScript==
// @name            Youtube: UpDown to Scroll
// @description     Scroll up/down when using home/end/up/down arrow instead of controlling the volume.
// @author          Chris H (Zren)
// @icon            https://youtube.com/favicon.ico
// @namespace       http://xshade.ca
// @version         3
// @include         http*://*.youtube.com/*
// @include         http*://youtube.com/*
// @include         http*://*.youtu.be/*
// @include         http*://youtu.be/*
// ==/UserScript==

window.addEventListener('keydown', function(e) {
    var validTarget = e.target === document.querySelector('#movie_player') || e.target === document.querySelector('#player-api');
    if (validTarget) {
        if (e.keyCode === 35) { // End
            e.stopPropagation()
        } else if (e.keyCode === 36) { // Home
            e.stopPropagation()
        } else if (e.keyCode === 38) { // ArrowUp
            e.stopPropagation()
        } else if (e.keyCode === 40) { // ArrowDown
            e.stopPropagation()
        }
    }
}, true);

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