The 300 ms Click Delay and iOS 8:
mobile browsers have a gesture known as double tap to zoom, and to make double tap to zoom work, browsers don’t fire a click event (or the various mouse events) until ~300 milliseconds after the user taps the screen.
https://yanxyz.github.io/mobile-click-delay/
- delay
- viewport width=device-width
- viewport initial-scale=1
- viewport user-scalable=no
- viewport minimum-scale=1,maximum-scale=1
- CSS touch-action
MIT (c) Ivan Yan