javascript - Safari's KeyboardEvent is so weird -

jsfriddle: https://jsfiddle.net/glv101mr/ (visit safari)

html:

<input type='text' id='text'/> 

js:

$('#text').on('keydown', function(e) {   console.log(e.type, e.which)   e.preventdefault()   return false }).on('keyup', function(e) {   console.log(e.type, e.which)   e.preventdefault()   return false }).on('keypress', function(e) {   console.log(e.type, e.which)   e.preventdefault()   return false }) 

when press alphabet keys(include enter, backspace, <>, etc..) , keyboard event correctly prevented, user cannot input anything. digit keys still can input(include +-@#$ , space key)!

and when press digit keys, keydown event's keycode prop 229, can't determine key pressed.

it's nightmare, remembered situation occurred once before, should handle keyboard events in safari browser??