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Carl Victor Fontanos
Carl Victor Fontanos

Carl Victor Fontanos

Software Engineer

I build web applications and share what I learn along the way.

© 2026

Tips & Tricks

50 tutorials

Step-by-step programming tutorials on PHP, JavaScript, Laravel, WordPress and more.

All Tips & Tricks 50 JavaScript 55 Hidden Features 42 CSS 40 PHP 37 UX 36 Performance 22 Debugging 19 Browser APIs 18 DOM 14 AJAX 12 Forms 11 Security 10 jQuery 8 Animations 7 HTML 2
Latest Popular
JavaScript Beginner

Stop Parsing Query Strings by Hand

Splitting location.search on & and = is a bug farm: encoding, arrays and empty values all break it. URLSearchParams and the URL API handle every edge case and read better.

2 min 1,833
JavaScript Intermediate

One AbortController Can Tear Down All Your Event Listeners

AbortController is not just for fetch(). Pass its signal to addEventListener and you can remove dozens of listeners with a single abort() call - no more keeping references to bound functions.

2 min 1,022