ES module import not working

Question

I am trying to make simple example of vanilla ES import export.

index.js

Answer 1

The simplest would be to remove the export and import expressions since you're already including both files in your html.

const foo = Math.sqrt(2) // mathModule.js
console.log(foo) // main.js

If you are using node or something similar to run the script, maybe you should use a transpiler such as babel. Import and Export are "new" javascript features hence they're not implemented in most browsers