[evilotto]

I fail to see how replacing 1 line of jQuery with 10 lines of plain js is simple. Sure, you don't use those 10 lines all over the place, you write a function ... but then aren't you just recreating jQuery?

[franciscop]

Yes, and if you continue long enough you end up with one of the many jQuery alternatives, like mine:

https://umbrellajs.com/

[shadofx]

Yes but only the parts you need, which means better performance and job security.