Dive deep into secure DOM-based XSS handling techniques for Node.js applications through our hands-on labs. Learn to prevent client-side script injection, DOM manipulation, URL parameter attacks, and location hash exploitation that compromise application security. Explore validation strategies such as input sanitization, Content Security Policy configuration, safe DOM interactions, and client-side rendering security. Create resilient web applications that properly validate, sanitize, and encode user inputs across your Node.js web applications.