js客户端快捷键管理类的较完整实现和应用_javascript技巧

复制代码 代码如下:

//一个快捷键对象
function KeyOne(id, keys, dom, isfun, fun,iskeydown) {
this.id = id;
this.keys = keys;
this.dom = dom;
this.isfun = isfun;
this.fun = fun;
this.isKeydown = iskeydown;
}

//快捷键管理类
var KeyConlor = {};
KeyConlor.list = new Array();
//添加一个快捷键绑定焦点（当快捷键被激发时让焦点落在指定id对象上）
//使用说明key的值如果是“c,50”则表示“ctrl”和键码为50的组合键
// "a,50" 则表示“alt”和键码为50的组合键
// "s,50" 则表示“shift”和键码为50的组合键
// "50" 则表示键码为50的单键（建议使用组合键alt）
//id指的是快捷键对应的焦点对象。
//dom指的是id对象所在的document对象
KeyConlor.addkeyfouse = function(id, key, dom, iskyedown) {
var keyone = new KeyOne(id, key, dom, false, null, iskyedown);
if (KeyConlor.KeyIsOK(keyone)) {
KeyConlor.list.push(keyone);
} else {
alert("快捷键" keyone.keys "已经被注册 不能重复注册了");
return false;
}
};

//快捷键绑定方法（当快捷键激发时触发方法）
KeyConlor.addkeyfun = function(key, fun, iskeydown) {
var keyone = new KeyOne("", key, "", true, fun, iskeydown);
if (KeyConlor.KeyIsOK(keyone)) {
KeyConlor.list.push(keyone)
} else {
alert("快捷键:" keyone.keys ";已经被注册 .重复注册无效");
return false;
}
};

//--删除一个快捷键
//KeyConlor.removeFouseKey = function(id) {
// var keyone = new KeyOne(id, "");
// for (var i = 0; i < KeyConlor.list.length; i ) {
// if (keyone.id == KeyConlor.list[i].id) {
// KeyConlor.list[i] = null;
// }
// }
//};

//--判断快捷键是不是重复注册
KeyConlor.KeyIsOK = function(keyone) {
for (var i = 0; i < KeyConlor.list.length; i ) {
if (KeyConlor.list[i].keys == keyone.keys) {
return false;
}
}
return true;
};
document.onkeydown = function() {
for (var i = 0; i < KeyConlor.list.length; i ) {
var keyone = KeyConlor.list[i];
if (!keyone.isKeydown) continue;
var control = keyone.keys.split(",")[0];
switch (control) {
case 's':
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.shiftKey == true && event.keyCode == code) {
//获得焦点
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
break;
case 'c':
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.ctrlKey == true && event.keyCode == code) {
//获得焦点
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
break;
case 'a':
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.altKey == true && event.keyCode == code) {
//获得焦点
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
event.keyCode=0;
break;

default:
//获得焦点
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.keyCode == code && event.altKey == false && event.ctrlKey == false && event.shiftKey == false) {
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
break;
}
}
};
document.onkeyup = function() {
for (var i = 0; i < KeyConlor.list.length; i ) {
var keyone = KeyConlor.list[i];
if (keyone.isKeydown) continue;
var control = keyone.keys.split(",")[0];
switch (control) {
case 's':
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.shiftKey == true && event.keyCode == code) {
//获得焦点
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
break;
case 'c':
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.ctrlKey == true && event.keyCode == code) {
//获得焦点
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
break;
case 'a':
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.altKey == true && event.keyCode == code) {
//获得焦点
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
break;

default:
//获得焦点
var code = keyone.keys.split(",").length > 1 ? keyone.keys.split(",")[1] : keyone.keys.split(",")[0];
if (event.keyCode == code && event.altKey == false && event.ctrlKey == false && event.shiftKey == false) {
if (!keyone.isfun) {
keyone.dom.getElementById(keyone.id).focus();
} else {
keyone.fun();
}
event.keyCode=0;
return false;
}
break;
}
}
};
//常用键盘码
var keyCodeStr = {
Alt: "a",
Shift: "s",
Ctrl: "c",
Up: "38" ,
向下：“40”，
左：“37”，
右：“39”，
Esc：“27”，
输入：“13”，
退格键: "8",
删除: "46",
制表符: "9",
CapsLK: "20",
空格: "32"
};
[code]
------------以上是js类---------------------------- ----

[代码]


<标题>



KeyConlor.addkeyfun(keyCodeStr.Ctrl "," "70",function (){alert("哈哈");},true);
KeyConlor.addkeyfouse("2","65",document,true);


<身体>

;
<输入类型=“文本”ID=“2”/>
<输入类型=“文本”ID=“3”/>
<输入类型=“文本”ID=“4”/>
<输入类型=“文本”ID=“5”/>