Adds arrow key and other useful shortcuts for navigating Google Calendar

GCalKeyboardShortcuts.user.js

// ==UserScript==
// @name         GCalKeyboardShortcuts
// @version      1.0.3
// @description  Adds arrow key and other useful shortcuts for navigating Google Calendar
// @author       aaplmath
// @match        https://calendar.google.com/calendar/*
// @downloadURL  https://gist.github.com/jrr6/390b3ab81f28047f1c3efa0473297177/raw/GCalKeyboardShortcuts.user.js
// @updateURL    https://gist.github.com/jrr6/390b3ab81f28047f1c3efa0473297177/raw/GCalKeyboardShortcuts.user.js
// @grant        none
// ==/UserScript==

(function() {
    document.body.addEventListener('keydown', (e) => {
        // input takes care of most text fields; editable addresses block text entry (e.g., in event edit view)
        if (document.activeElement.tagName === 'INPUT'
            || document.activeElement.classList.contains('editable')) return
        if (e.keyCode === 37) { // left - previous
            e.preventDefault()
            e.stopPropagation()
            document.querySelectorAll('.Ce1Y1c')[0].click()
        } else if (e.keyCode === 39) { // right - next
            e.preventDefault()
            e.stopPropagation()
            document.querySelectorAll('.Ce1Y1c')[1].click()
        } else if (e.keyCode === 32) { // space - today
            e.preventDefault()
            e.stopPropagation()
            document.querySelector('.VfPpkd-RLmnJb').click()
        }
    })
})();