Bookmarklet: Custom playback rate for tele-task

customPlaybackrate.js

/** Create a bookmark and enter the contents of this script as target
  * Click the bookmark to customize the playback rate of the Tele-task video in the current tab */
javascript:(function() {
	const videoPlayer = $($("video-player")[0].shadowRoot);
	const videos = videoPlayer.children("#video-player-container").find("video-stream").map((i, s) => $(s.shadowRoot).children().find("video")[0]);
	const speedControl = $($(videoPlayer.children("#video-player-container").find("#control-bar")[0].shadowRoot).children().find("speed-control")[0].shadowRoot);
	const speedControlSelect = $(speedControl.children("#container__speed_control").find("select-control")[0].shadowRoot);
	const speedSelectButton = speedControlSelect.children().find("#button__select");
	
	let speed = videos[0].playbackRate;
	const response = prompt("Custom tele-task speed", speed);
	if (!response) { return; }
	speed = parseFloat(response);
	
	videos.map((i, v) => v.playbackRate = speed);
	speedSelectButton.attr("badge-value", speed.toFixed(1) + "x");
	speedControlSelect.children().find("#dropdown__select").children().find("a").removeClass("active selected");
})();