a starting template for a express app in javascript

To create a starting template for an Express app in JavaScript, follow these steps:

1. Install express via npm:

npm install express
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2. Create a new file named app.js (or whatever name you choose) and add the following code:

index.tsx
const express = require('express');
const app = express();

app.get('/', (req, res) => {
  res.send('Hello World!');
});

app.listen(3000, () => {
  console.log('Server started on port 3000.');
});
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3. Run the app on the command line:

node app.js
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4. Open your web browser and navigate to http://localhost:3000 to view the "Hello World!" message.

This is a basic starting template for an Express app in JavaScript, which you can build upon by adding additional routes, middleware, and more.