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Express.js - AJAX PUT request
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In this article, we would like to show you how to make AJAX PUT requests in Express.js.
1. Express.js PUT methods example
In this section, we use Express.js to handle PUT requests.
index.js
const express = require('express'); // installation: npm install express
const port = 3000;
const app = express();
app.put('/examples', (request, response) => {
const data = request.body;
// inserting new resources
response.send('put your changed data here');
});
app.listen(port, () => {
console.log(`server is listening at http://localhost:${port}`);
});
To run the server use:
node index.js
Output:
server is listening at http://localhost:3000
2. Pure JavaScript (Vanilla JS) AJAX PUT request
The following is an example execution of a fetch method that sends PUT requests.
<!DOCTYPE html>
<html>
<body>
<script>
var bodyData = 'text';
fetch('/examples', {
method: 'PUT',
headers: {
'Content-Type': 'text/plain',
},
body: bodyData,
})
.then((response) => response.json())
.then((data) => {
console.log('Success:', data);
})
.catch((error) => {
console.error('Error:', error);
});
</script>
</body>
</html>