Atitit.js keyboard key event bundling dan event dispatching_javascript kemahiran

1. Kaedah terbaik masih

objEvtMap[ id+evt ]=function(evt,element)

2. Ikatan acara

function bindEvent_4_dataBlock()
{
var arr=$("#table1 li");
arr.each(function(index, element) {
$(element).keypress(function(){
alert('keypress');
});
var id="data_aid_"+index;
$(element).attr("id","data_aid_"+index);
objEvtMap[ id ]=function(evt,element)
{
if(evt=="down")
key_press_hadler($(element));
if(evt=="up")
key_press_hadler4up($(element));
if(evt=="left")
{};
if(evt=="rit")
{}
};
});
}

3. Penghantaran acara

document.onkeydown=function(event){
var e = event || window.event || arguments.callee.caller.arguments[0];
alert("keycode:"+e.keyCode);
if(e && e.keyCode==40 ){//下
//alert('40=下键，39=右键');
var now=$(".selected");
var id=$(now).attr("id");
var func=objEvtMap[id ];
func("down",now);
//key_press_hadler(now);
return false;
}

Dapatkan acara papan kekunci dalam js

<script type="text/javascript" language=JavaScript charset="UTF-">
document.onkeydown=function(event){
var e = event || window.event || arguments.callee.caller.arguments[];
if(e && e.keyCode==){ // 按 Esc 
//要做的事情
}
if(e && e.keyCode==){ // 按 F 
//要做的事情
} 
if(e && e.keyCode==){ // enter 键
//要做的事情
}
}; 
</script>

Selagi anda mentakrifkan tindakan kekunci ini, ia akan bertindak balas apabila anda menekan kekunci ini dalam penyemak imbas Ia serasi dengan semua pelayar semasa.

Acara papan kekunci dalam js sering digunakan, jadi saya mengumpulkan kod kunci yang sepadan dengan acara papan kekunci untuk dikongsi:

keyCode = BackSpace BackSpace
keyCode = Tab Tab
keyCode = Clear
keyCode = Enter
keyCode = Shift_L
keyCode = Control_L
keyCode = Alt_L
keyCode = Pause
keyCode = Caps_Lock
keyCode = Escape Escape
keyCode = space
keyCode = Prior
keyCode = Next
keyCode = End
keyCode = Home
keyCode = Left
keyCode = Up
keyCode = Right
keyCode = Down
keyCode = Select
keyCode = Print
keyCode = Execute
keyCode = Insert
keyCode = Delete
keyCode = Help
keyCode = equal braceright
keyCode = exclam onesuperior
keyCode = quotedbl twosuperior
keyCode = section threesuperior
keyCode = dollar
keyCode = percent
keyCode = ampersand
keyCode = slash braceleft
keyCode = parenleft bracketleft
keyCode = parenright bracketright
keyCode = a A
keyCode = b B
keyCode = c C
keyCode = d D
keyCode = e E EuroSign
keyCode = f F
keyCode = g G
keyCode = h H
keyCode = i I
keyCode = j J
keyCode = k K
keyCode = l L
keyCode = m M mu
keyCode = n N
keyCode = o O
keyCode = p P
keyCode = q Q at
keyCode = r R
keyCode = s S
keyCode = t T
keyCode = u U
keyCode = v V
keyCode = w W
keyCode = x X
keyCode = y Y
keyCode = z Z
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_ KP_
keyCode = KP_Multiply KP_Multiply
keyCode = KP_Add KP_Add
keyCode = KP_Separator KP_Separator
keyCode = KP_Subtract KP_Subtract
keyCode = KP_Decimal KP_Decimal
keyCode = KP_Divide KP_Divide
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = F
keyCode = Num_Lock
keyCode = Scroll_Lock
keyCode = acute grave
keyCode = comma semicolon
keyCode = minus underscore
keyCode = period colon
keyCode = numbersign apostrophe
keyCode = plusminus hyphen macron
keyCode =
keyCode = copyright registered
keyCode = guillemotleft guillemotright
keyCode = masculine ordfeminine
keyCode = ae AE
keyCode = cent yen
keyCode = questiondown exclamdown
keyCode = onequarter onehalf threequarters
keyCode = less greater bar
keyCode = plus asterisk asciitilde
keyCode = multiply division
keyCode = acircumflex Acircumflex
keyCode = ecircumflex Ecircumflex
keyCode = icircumflex Icircumflex
keyCode = ocircumflex Ocircumflex
keyCode = ucircumflex Ucircumflex
keyCode = ntilde Ntilde
keyCode = yacute Yacute
keyCode = oslash Ooblique
keyCode = aring Aring
keyCode = ccedilla Ccedilla
keyCode = thorn THORN
keyCode = eth ETH
keyCode = diaeresis cedilla currency
keyCode = agrave Agrave atilde Atilde
keyCode = egrave Egrave
keyCode = igrave Igrave
keyCode = ograve Ograve otilde Otilde
keyCode = ugrave Ugrave
keyCode = adiaeresis Adiaeresis
keyCode = ediaeresis Ediaeresis
keyCode = idiaeresis Idiaeresis
keyCode = odiaeresis Odiaeresis
keyCode = udiaeresis Udiaeresis
keyCode = ssharp question backslash
keyCode = asciicircum degree
keyCode = sterling
keyCode = Mode_switch

Gunakan atribut KeyCode objek acara untuk menentukan nilai kunci input

cth: if(event.keyCode==)alert(“enter!”);

Jadual surat-menyurat nilai kunci

A　　X 　U 　　X
B　　X　 V　　 X
C　　X　 W　　 X
D　　X　 X 　　X
E　　X　 Y　　 X
F　　X　 Z　　 X
G　　X　 　　 X
H　　X　 　　 X
I　　X　 　　 X
J　　X　 　　X
K　　X　 　　X
L　　X　 　　X
M　　X　 　　 X
N　　X 　 　　X
O　　X 　 　　X
P　　X 　 　　X
Q　　X　ESC　　XB
R　　X　CTRL 　X
S　　X　SHIFT　X
T　　X　ENTER　XD

Jika anda ingin menggunakan kombinasi kekunci, anda boleh menentukan sama ada kekunci ini ditekan pada masa yang sama Contohnya, gabungan kekunci ctrl, kekunci anjakan dan kekunci alt boleh menentukan sama ada kekunci ctrl, kekunci anjakan, dan kekunci alt ditekan beberapa kali