What are modern browser games written in today?

Question

Game development

I had free time, and so I decided to try to realize my childhood dream - to "create games", and at the same time learn a little, because I'm degrading ...
Tell me, what are browser games written in 2019?
Didn't even come close to doing something like that. At the moment, my level is to write a php site with an admin panel on a frame, sketch out a small js script and set up a linux server so that everything works, git and layout.
I do not plan to write anything super complicated, I will take the graphics for the game from open sources.
There will be no bots, online modes, etc. Simple game, minimal math, single player mode. I want to write / parse from and to.
For example, re-write the same snake (slither.io) or a simple "casino" game, where strawberries and cherries will randomly move on click and issue $ + or -, in one, two or three lines. I don’t want to
learn Cish languages, because I don’t see myself in this direction in the future.
and android. That is, without any additional installation of libraries, such as flash, units, etc. I
brought a shortcut on the desktop of the phone / laptop and play.

Answer 1

Nothing has changed. Languages ​​have grown up, but it's still the same JS at the front. And any as a back. Unless there are more frameworks

Answer 2

WebGl Tree.js and I think a bunch of other libraries for canvas

Answer 3

https://phaser.io is your choice.
Here is my attempt at writing a tutorial on how to write a Minesweeper game.