Krunker (https://krunker.io/) is a browser based multiplayer shooter.
CrossCode (http://www.cross-code.com/en/home) is another pretty famous one that is also on Steam and very popular.
Slither.io (http://slither.io/) and really the whole genre that these sorts of games became.
The whole Godot Engine IDE (https://editor.godotengine.org/releases/latest/) has a web version.
Game Dev Tycoon (https://store.steampowered.com/app/239820/Game_Dev_Tycoon/) is made with JS.
Curious Expedition (https://store.steampowered.com/app/358130/Curious_Expedition...) was written in CoffeeScript which is compiled to JS.
And so on, and on. There are literally loads including umpteen multiplayer ports of Quake 3 and that sort of thing. Throw in all the JS13k games. Numerous games people have published using the Unity web exporter and so on. All the little web games people have released on itch.io, all the stuff made with Twine and Bitsy. And on, and on.
The idea that JS is too slow to make games with is pretty silly and smacks a bit of willful ignorance.