The following examples illustrate defining simple routes.

Respond with Hello World! on the homepage:
//get method for retrieving data.
app.get('/', function (req, res) {
  res.send('Hello World!')
Respond to POST request on the root route (/), the application’s home page:
//send method for sending data.'/', function (req, res) {
  res.send('Got a POST request')
Respond to a PUT request to the /user route:
//put request to 
app.put('/user', function (req, res) {
  res.send('Got a PUT request at /user')
Respond to a DELETE request to the /user route:

app.delete('/user', function (req, res) {
  res.send('Got a DELETE request at /user')
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