JAVASCRIPT

import modules js html

<script type="module" src="main.js"></script>

how to import modules js

import defaultExport from "module-name";
import * as name from "module-name";
import { export1 } from "module-name";
import { export1 as alias1 } from "module-name";
import { export1 , export2 } from "module-name";
import { export1 , export2 as alias2 , [...] } from "module-name";
import defaultExport, { export1 [ , [...] ] } from "module-name";
import defaultExport, * as name from "module-name";
import "module-name";
var promise = import("module-name");

javascript import module

// app.js

import { add } from './data';

console.log(add(2, 3));

javascript import module

// data.js

export const add = (x, y) => {
    return x + y
}