MediaWiki:MOTD.js

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function getRandomQuote (items) {
  return Math.floor(Math.random() * items.length);
}

$.get('https://wiki.project1999.com/MediaWiki:Quotes.json').then(html => {

  var raw = html
    .split('<pre class="mw-code mw-js" dir="ltr">')[1]
    .split('/pre>')[0]
    .trim()
    .replaceAll('&quot;', '"');
  
  var messages = JSON.parse(raw);
  console.log(getRandomQuote(messages));
};