AJAX with CodeIgniter

AJAX with CodeIgniter — a practical guide to CodeIgniter AJAX with clear examples you can reuse in real projects.

CodeIgniter Tutorial Series (44/74). Prefer one article? Read the complete CodeIgniter tutorial.

Short description

Detect AJAX calls, validate input, and respond with JSON status payloads for frontend fetch/XHR.

JSON AJAX endpoint

public function store()
{
    $text = $this->request->getPost('text');
    // save...
    return $this->response->setJSON([
        'success' => true,
        'message' => 'Saved',
    ]);
}