Learn JQUERY with Real Code Examples

Prefer direct DOM references over repeated queries

Avoid heavy DOM repaints

Use event delegation

Cache selectors for performance

Replace animations with CSS transitions when possible

Avoid injecting unsanitized HTML

Use HTTPS for AJAX

Validate input on server-side

Avoid plugins from untrusted sources

Keep jQuery updated to patch vulnerabilities

Track DOM mutations

Log AJAX errors

Integrate with Sentry

Monitor performance of selectors

Measure animation lag

Use ESLint for JS

Avoid deeply nested callbacks

Encapsulate logic into plugins

Prefer `on()` delegation

Document plugin APIs