AJAX

AJAX (Asynchronous JavaScript and XML) is the foundational technique for building interactive web applications without full page reloads. This hub collects free AJAX source code, step-by-step tutorials covering jQuery AJAX, fetch API, and axios, plus complete capstone modules using AJAX with PHP, Laravel, CodeIgniter, and Node.js back-ends.

What you’ll find in the AJAX Projects hub

CRUD without page reload — add, edit, delete records via AJAX with instant UI updates
Live search — type-ahead suggestions that query the server as you type
Real-time form validation — check username availability, email uniqueness server-side
Infinite scroll & pagination — load more data on demand instead of full page loads
File upload with progress — async uploads with progress bars
Cascading dropdowns — country → state → city dropdowns dependent on previous selection
Live chat patterns — basic polling-based chat (use WebSockets for production)

AJAX techniques covered

jQuery AJAX — $.ajax(), $.get(), $.post(), $.getJSON()
fetch API — modern native browser AJAX (no library required)
axios — promise-based HTTP client popular in React/Vue apps
FormData handling — submitting multipart forms with files
JSON request/response — passing structured data instead of form fields
Error handling — .fail() callbacks, try/catch with async/await
CSRF token handling — securing AJAX in Laravel, Django, Express

When to use AJAX in your capstone

AJAX is essential for any capstone with interactive forms, dashboards, or real-time-feeling features. The traditional PHP + MySQL + jQuery + AJAX combo is the most common Philippine BSIT capstone stack because: (1) it’s simple to explain to panels, (2) hosting is universal, (3) debugging is straightforward, (4) the patterns are battle-tested. For modern SPA capstones using React or Vue, AJAX still happens — just via fetch or axios instead of jQuery.