Javascript/jquery Keyboard Event Introduction

First, need to know is:
1, KeyDown ()
The KeyDown event is triggered when the keyboard is pressed.
2, KeyUp ()
The KeyUp event is triggered when the key is released, which is the event you press the keyboard up
3, KeyPress ()
The KeyPress event is triggered when the button is tapped, and we can understand that pressing and lifting the same button

Second, obtain the corresponding ASCII code on the keyboard:

$ (document). KeyDown (function

$tips: In the example above, Event.keycode can help us to get to what button we pressed on the keyboard, he returned the ASCII code, such as the next key around, is 38,40,37,39;

Iii. instances (when pressing the left and right side keys on the keyboard)
The code is as follows:

$ (document). KeyDown (function(event) {//judge when Event.keycode is 37 o'clock (that is, left side key), execute function to_left ();//judge when Event.keycode is 39 o'clock (i.e. right-side key), execute function to_right (); if(Event.keycode = = 37) {to_left (); }Else if(Event.keycode = = 39) {to_right (); }         Else if(Event.keycode = = 38) {to_top (); }         Else if(Event.keycode = = 40) {to_bottom (); } }); functionTo_left () {$ (". ABC"). css ({' Left ': '-=10 ')});}functionTo_right () {$ (". ABC"). css ({' Left ': ' +=10 ')});}functionTo_top () {$ (". ABC"). css ({' Top ': '-=10 ')});}functionTo_bottom () {$ (". ABC"). css ({' Top ': ' +=10 '});}

Javascript/jquery Keyboard Event Introduction