Tag skrip jQuery
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
// Put this script in the head of your index.html to load jQuery
// The Google Hosted Libraries is a stable, reliable, high-speed,
// globally available content distribution network for the most popular,
// open-source JavaScript libraries.
// Google works directly with the key stakeholders for each library effort
// and accepts the latest versions as they are released.
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