The .env file should be created in the root directory of the React project. In other words, it resides in the same directory with package.json. If we change the React development server port to 8000, the content of .env file will be as follows. .env PORT=8000 To validate the port ch...
Your Svelte app will also run on PORT=5000 as opposed to React’s PORT=3000. Svelte In your terminal or command prompt window, run the following commands: Bash Copy Code npx degit sveltejs/template svelte-test cd svelte-test npm install npm run dev React Open a second terminal, and ...
In other cases, you need to create a run/debug configuration with the actual settings, such as, host, port, etc., manually. Create an npm run/debug configuration Go to Run | Edit Configurations. Alternatively, select Edit Configurations from the Run widget on the toolbar. In the Edit...
Paste http://localhost:3000 into the URL field and save the configuration. Note: the URL may be different if you've made adjustments via the HOST or PORT environment variables. Start your app by running npm start, then press ^D on macOS or F9 on Windows and Linux or click the green ...
RequestHandler()constPORT=3001// 等到pages目录编译完成后启动服务响应请求app.prepare().then(()=>{constserver=newKoa()constrouter=newRouter()server.use(async(ctx,next)=>{awaithandle(ctx.req,ctx.res)ctx.respond=false})server.listen(PORT,()=>{console.log(`koa server listening on${PORT}`)}...
We need to make one change for our example: change the port of theurlfrom8080to3000. Yourlaunch.jsonshould look like this: {"version":"0.2.0","configurations": [{"type":"msedge","request":"launch","name":"Launch Edge against localhost","url":"http://localhost:3000","webRoot":"$...
But nothing is already running on port 3000!!! if "127.0.0.1 localhost" is not in your host. when you run yarn start . it tell you Something is already running on port 3000 ... see detect-port#L58 the error msg should more friendly.
PORT By default, the development web server will attempt to listen on port 3000 or prompt you to attempt the next available port. You may use this variable to specify a different port. HTTPS When set to true, Create React App will run the development server in https mode. PUBLIC_URL Crea...
Paste http://localhost:3000 into the URL field and save the configuration. Note: the URL may be different if you've made adjustments via the HOST or PORT environment variables. Start your app by running npm start, then press ^D on macOS or F9 on Windows and Linux or click the green ...
const app = express(); app.use(bodyParser.json()); app.post('/api/post', (req, res) => { const { username, password } = req.body; // 处理POST请求的数据 res.send('Post request received'); }); app.listen(3000, () => { console.log('Server is running on port 3000'); })...