# Session title

JavaScript: Weird by design and we ❤️ it

## Session URL

https://webexpo.net/prague2026/sessions/javascript-weird-by-design-and-we-love-it/

## Session Type

Conference Talk

## Talk Description

JavaScript is weird and that’s why we love it. In this talk, we’ll explore the strangest, funniest, and most broken behaviours hiding in JS and browser APIs. From [] == ![] being true, to overwriting the user’s clipboard with a single line of code, this is a tour of JavaScript’s most “beautiful” chaos.





## Tags

Frontend Dev

## Session Focused on

Web Development: 100%, Design & UX: 20%, Marketing: 0%, Business: 0%

## Session Presenter

Krasimir Tsonev

## Session Presenter Bio

Krasimir Tsonev is a coder with over 20 years of experience in web development and the author of books on Node.js, JavaScript and React. Currently, he works for Antidote.me, where his strong focus on quality and usability helps him create and discover new and effective digital experiences for patients.

## Session Details

### Date

May 28, 2026 10:00 am

### Duration

40 Minutes

### Specific Location

Lucerna Great Hall

### General Localtion

Lucerna Palace, Prague, Czech Republic