Created
June 6, 2020 20:39
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very small webapp to create an anonymous youtube playlist from a few videos
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<!DOCTYPE html> | |
<body style="font-family: sans-serif;"> | |
<p> | |
<label> | |
Youtube URLs:<br> | |
<textarea id="input" style="box-sizing: content-box; width: 100%; min-height: 8em; line-height: 1.4em; padding: 0.2em"></textarea> | |
</label> | |
</p> | |
<p> | |
<label> | |
<input type="checkbox" id="removeDuplicates" /> Remove duplicates | |
</label> | |
</p> | |
<p> | |
<label> | |
Playlist URL:<br> | |
<input id="output" disabled style="box-sizing: border-box; width: 100%;" /> | |
</label> | |
</p> | |
<script> | |
const INPUT_LINE_HEIGHT = 1.4 // em | |
const INPUT_PADDING = 0.2 // em | |
const $input = document.getElementById('input') | |
const $output = document.getElementById('output') | |
const $removeDuplicates = document.getElementById('removeDuplicates') | |
const ytIdRx = /(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/\s]{11})/gi; | |
const update = () => { | |
let matches = Array.from($input.value.matchAll(ytIdRx)) | |
.map(([_, id]) => id) | |
if (matches.length === 0) { | |
matches = ['id1', 'id2', '...'] | |
} else if ($removeDuplicates.checked) { | |
matches = matches.filter( | |
(id, i) => matches.indexOf(id) === i | |
) | |
} | |
$output.value = `https://www.youtube.com/watch_videos?video_ids=${matches.join(',')}` | |
// resize input textarea | |
const lineCount = $input.value.match(/^/gm).length | |
$input.style.height = `${lineCount*INPUT_LINE_HEIGHT + 2*INPUT_PADDING}em` | |
} | |
$input.addEventListener('input', update) | |
$removeDuplicates.addEventListener('input', update) | |
update() | |
</script> | |
</body> |
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