javascript 进出口

Posted 2021-05-03

import flashMessage from './flash-message'; (name of js file)
flashMessage("Hello");

export default function(message) {
  alert(message)
}

(because we're using 'default' export, flashMessage could be named anything)

(in order to export multiple functions from a single module, need to use named exports)

export function alertMessage(message) {
  alert(message);
}

export function logMessage(message) {
  console.log(message);
}

import {alertMessage, logMessage} from './flash-message';

or for multiple  imports:

import * as flash from './flash-message';
flash.alertMessage('Hello from alert');
flash.logMessage('Hello from log');