How to add MIME type for .mjs

Update the file httpd.conf of Apache as below:

<IfModule mime_module> ... AddType application/wasm .wasm AddType application/javascript .mjs </IfModule>

Then you can run the .mjs files along with .js files in brower.

<script type="module" src="demo.js"></script> <script type="module" src="demo.mjs"></script>

And the result: