Never? I clearly remember back in the mid to late 90s, you could easily bring the browser to its knees with a simple JS loop. It wasn’t until Google came around

Never? I clearly remember back in the mid to late 90s, you could easily bring the browser to its knees with a simple JS loop. It wasn’t until Google came around and needed fast JS for Gmail, google docs, maps, etc. that JS became fast as they poured resources into that space and everyone else played catch up.