XMLHttpRequest POST: A Comprehensive Guide with Examples
Introduction
XMLHttpRequest (XHR) is a built-in JavaScript object that allows web applications to make
Asynchronous requests to a web server.
Use code with caution.
Open a POST Request:
JavaScript
xhr.open
Use code with caution.
‘POST’ The HTTP method
for sending data to the server.
api.example.com/data’: The URL of the endpoint where you want to send the data.
true: Indicates asynchronous communication.
Set Request Headers:
Key Points to Remember
form data, you can use the FormData object to create a key-value pair
Error Handling: Implement
Use appropriate measures to protect user data.
Asynchronous Nature: 100% Accurate South Africa Phone Number List Remember that
XMLHttpRequest is asynchronous.
The onload event handler
will be executed when the
response is received, which might not be immiately after sending the request.
Additional Considerations
Form Data: If you’re sending
representation of the
form fields and send it as the request body.
request using events like onloadstart, onprogress, and onloadend.
Cross-Origin Resource
Sharing (CORS): If you’re making requests to a different domain,
to allow cross-
origin requests.
Progress Events: Taiwan mobile phone number Monitor the progress of the
ensure CORS is enabled on the server
