how to export and import js file code example

Example 1: javascript import class

//import it
import Example from './file2';
//Create an Instance
var myInstance = new Example()
myInstance.test()

Example 2: js import and export

// helloworld.js

export function helloWorld() {
	return 'Hello World!';
}

// main.js

import helloWorld from './helloworld.js';

console.log(helloWorld());