The correct way to start a server listening on port 3000 in Express is by using the `listen` method. Here is the step by step process:

1. First, you need to import Express into your file. You can do this by adding the following line at the top of your file:

```javascript
const express = require('express');
```

2. Next, you need to create an instance of an Express application. You can do this by adding the following line:

```javascript
const app = express();
```

3. Now, you can start the server listening on port 3000. You do this by calling the `listen` method on your Express application instance and passing in the port number (3000 in this case) and a callback function to be executed once the server is running. Here is how you do it:

```javascript
app.listen(3000, () = {
console.log('Server running on port 3000');
});
```

So, the correct answer from your options is `app.listen(3000, () = { console.log('Server running'); })`. The `app.start`, `app.run`, and `app.launch` methods do not exist in Express.

Question

The correct way to start a server listening on port 3000 in Express is by using the `listen` method. Here is the step by step process:

1. First, you need to import Express into your file. You can do this by adding the following line at the top of your file:

```javascript
const express = require('express');
```

2. Next, you need to create an instance of an Express application. You can do this by adding the following line:

```javascript
const app = express();
```

3. Now, you can start the server listening on port 3000. You do this by calling the `listen` method on your Express application instance and passing in the port number (3000 in this case) and a callback function to be executed once the server is running. Here is how you do it:

```javascript
app.listen(3000, () => {
  console.log('Server running on port 3000');
});
```

So, the correct answer from your options is `app.listen(3000, () => { console.log('Server running'); })`. The `app.start`, `app.run`, and `app.launch` methods do not exist in Express.

Knowee AI · Accepted Answer

The correct way to start a server listening on port 3000 in Express is by using the `listen` method. Here is the step by step process:

1. First, you need to import Express into your file. You can do this by adding the following line at the top of your file:

```javascript
const express = require('express');
```

2. Next, you need to create an instance of an Express application. You can do this by adding the following line:

```javascript
const app = express();
```

3. Now, you can start the server listening on port 3000. You do this by calling the `listen` method on your Express application instance and passing in the port number (3000 in this case) and a callback function to be executed once the server is running. Here is how you do it:

```javascript
app.listen(3000, () => {
  console.log('Server running on port 3000');
});
```

So, the correct answer from your options is `app.listen(3000, () => { console.log('Server running'); })`. The `app.start`, `app.run`, and `app.launch` methods do not exist in Express.

How do you start a server listening on port 3000 in Express?app.start(3000, () => { console.log('Server running'); })app.run(3000, () => { console.log('Server running'); })app.listen(3000, () => { console.log('Server running'); })app.launch(3000, () => { console.log('Server running'); })

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