Head Elements

Script Tag

The <script> tag adds JavaScript to the page, either written inside it or loaded from a file.

<!-- external file (recommended) -->
<script src="app.js" defer></script>

<!-- inline -->
<script>
  console.log("Page loaded!");
</script>

Attribute	Behaviour
(none)	Stops the page loading until the script has downloaded and run.
`defer`	Downloads in the background and runs after the HTML is ready, in order. Best for most scripts.
`async`	Downloads in the background and runs as soon as it arrives, in any order. Good for analytics.
`type="module"`	Loads modern JavaScript modules. Deferred automatically.