Since 2015, JavaScript has improved immensely.

It’s much more pleasant to use it now than ever.

In this article, we’ll look at how to use JavaScript modules in browsers and the relationship between exports and imports.

ES6 Modules in Browsers

We can use ES6 modules in most modern browsers.

To use them, we just add a script tag with the type attribute set to module .

The file extension is still js like regular script files.

The content of the JavaScript file is delivered via the webserver.

ES6 modules in the browser combine to convenience by combining the syntax os synchronous loading with async loading underneath.

They’re less flexible than ES6 modules.

They can only be loaded at the top level so they can’t be conditional.

The restriction lets us analyze modules statically do see what modules are imported by other modules before execution.

Regular scripts can’t become modules because they’re synchronous.

We can’t import modules declaratively since they load one by one,

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