How do you start an Express server and listen on a specific port?app.run(port)app.listen(port)app.start(port)app.init(port)
Question
How do you start an Express server and listen on a specific port?app.run(port)app.listen(port)app.start(port)app.init(port)
Solution
To start an Express server and listen on a specific port, you would typically follow these steps:
- First, you need to install Express. You can do this using npm (Node Package Manager) with the following command in your terminal:
npm install express
- Once Express is installed, you can create a new file (for example,
app.js) and require Express at the top of this file:
const express = require('express');
- Next, you need to create an instance of an Express application. You can do this with the following line of code:
const app = express();
- Now, you can tell your Express application to listen on a specific port. For example, if you wanted your application to listen on port 3000, you would use the following code:
app.listen(3000, function () {
console.log('Example app listening on port 3000!');
});
- Finally, you can start your server by running the following command in your terminal:
node app.js
This will start your Express server and it will listen on port 3000. You can replace 3000 with any port number you prefer.
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