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JavaScript Singleton to connect to WebSocket (originally for React project)
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| // Thank you Ranatchai Chernbamrung for sample socketIO singleton pattern | |
| // This code is originally for my React project, but should work with any ES6 project that support `import` statement | |
| // How it works | |
| // 1. Create webSocket.js to establish the connection and retrieve the connection | |
| // 2. In main file, import webSocket.js to establish the connection | |
| // 3. In other component files, import webSocket.js to retrieve the connection | |
| // webSocket.js | |
| let client | |
| export const initws = (mesg) => { | |
| client = new WebSocket('ws://localhost:4237') | |
| return client | |
| } | |
| export const getws = () => { | |
| return client | |
| } | |
| // App.js | |
| import { initws } from './webSocket' | |
| let ws = initws('Hi') | |
| ws.send(...) | |
| ws.onmessage = ev => { console.log(ev.data) } | |
| // SomeComponent.js | |
| import { getws } from './../webSocket' | |
| let ws = getws() |
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