create and export a module es6 code example

Example 1: import javascript

/*Imagine a file called math_functions.js that contains several functions
related to mathematical operations. One of them is stored in a variable called
add.*/

//If you want to import one item:
import { add } from './math_functions.js';

//If you want to import multiple items:
import { add, someothervariable } from './math_functions.js';

Example 2: javascript export default

export default const array = [1, 2, 3];
export default let array = [1, 2, 3];
export default var array = [1, 2, 3];
export default const variable = 'value';
export default let variable = 'value';
export default var variable = 'value';
export default const variable;
export default let variable;
export default var variable;
export default function functionName () {
  // ...
}
export default class ClassName {
  // ...
}
// Before you use export default: You can't have 2 or more export default's.