Pretty Slow / Ugly Fast: How to Optimize your Code in 19 Different Ways

JavaScript performance trade-offs are explored through 19 code pattern examples, comparing elegant approaches to optimized counterparts. Tests reveal surprising results, with some "pretty" syntax outperforming traditional methods. Key takeaways: always test assumptions, consider context, and balance readability with speed based on specific needs. Modern optimizations can blur the line between attractive and efficient code.