Js之软键盘实现(js源码)_javascript技巧

鉴于安全性的考虑，不少网站在登录输入密码时都采用了软键盘，避免一些键盘记录工具和木马对击键的捕捉。项目中也有这个需求，就分享给大家了，贴个效果图上来。。有兴趣的朋友可以收藏。。..如果觉得功能有点庞大，只需要数字小键盘的朋友，可参考代码精简。
下载大键盘: http://www.cnblogs.com/Files/sccxszy/softKey.rar
小键盘：http://www.cnblogs.com/Files/sccxszy/smallSoftkey.rar

小键盘:


效果还原:Default.aspx,softkeyboard.js,softkey.css三个文件
js代码:
softkeyboard.js

window.onload=
function()
{
password=null;
initCalc();
}
var password;
var CapsLockValue=;
var checkSoftKey;
function setVariables() {
tablewidth=;
tableheight=;
if (navigator.appName == "Netscape") {
horz=".left";
vert=".top";
docStyle="document.";
styleDoc="";
innerW="window.innerWidth";
innerH="window.innerHeight";
offsetX="window.pageXOffset";
offsetY="window.pageYOffset";
}
else {
horz=".pixelLeft";
vert=".pixelTop";
docStyle="";
styleDoc=".style";
innerW="document.body.clientWidth";
innerH="document.body.clientHeight";
offsetX="document.body.scrollLeft";
offsetY="document.body.scrollTop";
}
}
function checkLocation() {
if (checkSoftKey) {
objectXY="softkeyboard";
var availableX=eval(innerW);
var availableY=eval(innerH);
var currentX=eval(offsetX);
var currentY=eval(offsetY);
x=availableX-tablewidth+currentX;
y=currentY;
evalMove();
}
setTimeout("checkLocation()",);
}
function evalMove() {
eval(docStyle + objectXY + styleDoc + vert + "=" + y);
}
self.onError=null;
currentX = currentY =;
whichIt = null;
lastScrollX =; lastScrollY =;
NS = (document.layers) ? :;
IE = (document.all) ?:;
function heartBeat() {
if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
if(diffY != lastScrollY) {
percent = . * (diffY - lastScrollY);
if(percent >) percent = Math.ceil(percent);
else percent = Math.floor(percent);
if(IE) document.all.softkeyboard.style.pixelTop += percent;
if(NS) document.softkeyboard.top += percent;
lastScrollY = lastScrollY + percent;}
if(diffX != lastScrollX) {
percent = . * (diffX - lastScrollX);
if(percent >) percent = Math.ceil(percent);
else percent = Math.floor(percent);
if(IE) document.all.softkeyboard.style.pixelLeft += percent;
if(NS) document.softkeyboard.left += percent;
lastScrollX = lastScrollX + percent; } }
function checkFocus(x,y) {
stalkerx = document.softkeyboard.pageX;
stalkery = document.softkeyboard.pageY;
stalkerwidth = document.softkeyboard.clip.width;
stalkerheight = document.softkeyboard.clip.height;
if( (x > stalkerx && x stalkery && y (stalkery+stalkerheight))) return true;
else return false;}
function grabIt(e) {
checkSoftKey = false;
if(IE) {
whichIt = event.srcElement;
while (whichIt.id!=null&&whichIt.id.indexOf("softkeyboard") == -) {
whichIt = whichIt.parentElement;
if (whichIt == null) { return true; } }
if(whichIt.style!=null){
whichIt.style.pixelLeft = whichIt.offsetLeft;
whichIt.style.pixelTop = whichIt.offsetTop;
}
currentX = (event.clientX + document.body.scrollLeft);
currentY = (event.clientY + document.body.scrollTop);
} else {
window.captureEvents(Event.MOUSEMOVE);
if(checkFocus (e.pageX,e.pageY)) {
whichIt = document.softkeyboard;
StalkerTouchedX = e.pageX-document.softkeyboard.pageX;
StalkerTouchedY = e.pageY-document.softkeyboard.pageY;} }
return true; }
function moveIt(e) {
if (whichIt == null) { return false; }
if(IE) {
if(whichIt.style!=null){
newX = (event.clientX + document.body.scrollLeft);
newY = (event.clientY + document.body.scrollTop);
distanceX = (newX - currentX); distanceY = (newY - currentY);
currentX = newX; currentY = newY;
whichIt.style.pixelLeft += distanceX;
whichIt.style.pixelTop += distanceY;
if(whichIt.style.pixelTop document.body.scrollTop;
if(whichIt.style.pixelLeft document.body.scrollLeft;
if(whichIt.style.pixelLeft > document.body.offsetWidth - document.body.scrollLeft -
whichIt.style.pixelWidth -) whichIt.style.pixelLeft = document.body.offsetWidth -
whichIt.style.pixelWidth -;
if(whichIt.style.pixelTop > document.body.offsetHeight + document.body.scrollTop -
whichIt.style.pixelHeight -) whichIt.style.pixelTop = document.body.offsetHeight +
document.body.scrollTop - whichIt.style.pixelHeight -;
event.returnValue = false;
}
} else {
whichIt.moveTo(e.pageX-StalkerTouchedX,e.pageY-StalkerTouchedY);
if(whichIt.left if(whichIt.top if( (whichIt.left + whichIt.clip.width) >= (window.innerWidth+self.pageXOffset-))
whichIt.left = ((window.innerWidth+self.pageXOffset)-whichIt.clip.width)-;
if( (whichIt.top + whichIt.clip.height) >= (window.innerHeight+self.pageYOffset-))
whichIt.top = ((window.innerHeight+self.pageYOffset)-whichIt.clip.height)-;
return false;}
return false; }
function dropIt() {whichIt = null;
if(NS) window.releaseEvents (Event.MOUSEMOVE);
return true; }
if(NS) {window.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN);
window.onmousedown = grabIt;
window.onmousemove = moveIt;
window.onmouseup = dropIt; }
if(IE) {
document.onmousedown = grabIt;
document.onmousemove = moveIt;
document.onmouseup = dropIt; }
var style="";
document.write(style);


document.write("

style=\"position:absolute; left:px; top:px; width:px; z-index:;display:none\">id=\"CalcTable\" width=\"\" border=\"\" align=\"center\" cellpadding=\"\" cellspacing=\"
\" bgcolor=\"\">align=\"center\">

class=\"table_title\" align=\"right\" valign=\"middle\" bgcolor=\"\" style=\"cursor:
default;height:\">name=action>&nbsp博客园
密码输入器
&nbsp&nbsp&nbsp&nbsp &nbsp &nbsp &nbsp &n
bsp &nbsp &nbsp value=\"使用键盘输入\" bgtype=\"\" onclick=\"password.readOnly=;password.focus
();closekeyboard();password.value='';\">

\" border=\"\" cellspacing=\"\" cellpadding=\"\">\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n\n\n\n\n\n\n\n\n\n\n\n \n \n\n

\">

\">

\">

\">

\">

\">

\">

格\" onclick=\"setpassvalue();\" onDblClick=\"setpassvalue();\" style=\"width:px;height:px\"> \n

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" value=\" \">

name=\"button_number\" type=button value=\" \">

\">

\">

value=\" q \">

value=\" e \">

value=\" t \">

value=\" u \">

value=\" o \">

\">

\">

onDblClick=\"capsLockText();setCapsLock();\" value=\"切换大/小写\" style=\"width:px;\">

type=button value=\" a \">

type=button value=\" d \">

type=button value=\" g \">

type=button value=\" j \">

\">

name=\"button\" type=button value=\" : \">

value=\" " \">

type=button value=\" ' \">

type=button onclick=\"OverInput();\" value=\" 确定 \" style=\"width:px;height:px;\">

value=\" x \">

value=\" v \">

value=\" n \">

value=\"

\">

type=button value=\" ? \">

type=button value=\" . \">

\">

");

function addValue(newValue)
{
if (CapsLockValue==)
{
var str=Calc.password.value;
if(str.length{
Calc.password.value += newValue;
}
if(str.length{
password.value=Calc.password.value;
}
}
else
{
var str=Calc.password.value;
if(str.length{
//Calc.password.value += newValue.toUpperCase();
Calc.password.value += newValue;
}
if(str.length{
password.value=Calc.password.value;
}
}
}

function setpassvalue()
{
var longnum=Calc.password.value.length;
var num
num=Calc.password.value.substr(,longnum-);
Calc.password.value=num;
var str=Calc.password.value;
password.value=Calc.password.value;
}

function OverInput()
{
var str=Calc.password.value;
password.value=Calc.password.value;
closekeyboard();
Calc.password.value="";
password.readOnly=;
}

function closekeyboard(theForm)
{
softkeyboard.style.display="none";
if(null!=unhideSelect){
unhideSelect();
}
}

function showkeyboard()
{
randomNumberButton();
var th = password;
var ttop = th.offsetTop;
var thei = th.clientHeight;
var tleft = th.offsetLeft;
var ttyp = th.type;
while (th = th.offsetParent){ttop+=th.offsetTop; tleft+=th.offsetLeft;}
softkeyboard.style.top = ttop+thei+;
softkeyboard.style.left = tleft-;
softkeyboard.style.display="block";
password.readOnly=;
password.blur();
document.all.useKey.focus();
if(null!=hideSelect){
hideSelect();
}
}

function setCapsLock()
{
if (CapsLockValue==)
{
CapsLockValue=
}
else
{
CapsLockValue=
}
}
function setCalcborder()
{
CalcTable.style.border="px solid #BADF"
}
function setHead()
{
CalcTable.cells[].style.backgroundColor="#BADF"
}
function setCalcButtonBg()
{
for(var i=;i{
if(Calc.elements[i].type=="button"&&Calc.elements[i].bgtype!="")
{
if(Calc.elements[i].bgtype==""){
Calc.elements[i].className="btn_num";
}else{
Calc.elements[i].className="btn_letter";
}
var str=Calc.elements[i].value;
str=str.trim();
if(str.length==)
{
}
var thisButtonValue=Calc.elements[i].value;
thisButtonValue=thisButtonValue.trim();
if(thisButtonValue.length==)
{
Calc.elements[i].onclick=
function ()
{
var thisButtonValue=this.value;
thisButtonValue=thisButtonValue.trim();
thisButtonValue=jiamiMimaKey(thisButtonValue);
addValue(thisButtonValue);
}
Calc.elements[i].ondblclick=
function ()
{
var thisButtonValue=this.value;
thisButtonValue=thisButtonValue.trim();
thisButtonValue=jiamiMimaKey(thisButtonValue);
addValue(thisButtonValue);
}
}
}
}
}
function initCalc()
{
setCalcborder();
setHead();
setCalcButtonBg();
}
String.prototype.trim = function()
{
return this.replace(/(^\s*)|(\s*$)/g, "");
}
var capsLockFlag;
capsLockFlag=true;
function capsLockText()
{
if(capsLockFlag)
{
for(var i=;i{
var char=Calc.elements[i].value;
var char=char.trim()
if(Calc.elements[i].type=="button"&&char>="a"&&char{
Calc.elements[i].value=" "+String.fromCharCode(char.charCodeAt()-)+" "
}
}
}
else
{
for(var i=;i{
var char=Calc.elements[i].value;
var char=char.trim()
if(Calc.elements[i].type=="button"&&char>="A"&&char{
Calc.elements[i].value=" "+String.fromCharCode(char.charCodeAt()+)+" "
}
}
}
capsLockFlag=!capsLockFlag;
}

function randomNumberButton(){
var a = new Array();
a[]=;a[]=;a[]=;a[]=;a[]=;a[]=;a[]=;a[]=;a[]=;a[]=;
var randomNum;
var times=;
for(var i=;irandomNum = parseInt(Math.random()*);
var tmp=a[];
a[]=a[randomNum];
a[randomNum]=tmp;
}
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
Calc.button_number.value=" "+a[]+" ";
}

function hideSelect(){
var i=;
while(idocument.getElementsByTagName("select")[i].style.visibility = "hidden";
i=i+;
}
}

function unhideSelect(){
var i=;
while(idocument.getElementsByTagName("select")[i].style.visibility = "visible";
i=i+;
}
}


function jiamiMimaKey(newValue) {
if (typeof(b) == "undefined" || typeof(ifUseYinshe) == "undefined" || ifUseYinshe ==
) {return newValue;}
var everyone = '';
var afterPass = '';
for (var i=;i everyone = newValue.charAt(i);
for (var j =;j if (everyone == b[*j]) {
afterPass = afterPass + b[*j+];
break;
}
}
}
newValue= afterPass;
jiami =;
return afterPass;
}

Default.aspx:
Inherits="_Default"
ResponseEncoding="GB" %>

BR>"http://www.w.org/TR/xhtml/DTD/xhtml-transitional.dtd">

onblur="tipLogPwd.className='tip_off'"
onclick="password=this;showkeyboard();this.readOnly=;Calc.password.value=''"
style="width:px">

softkey.css:

#Page_content {}{
PADDING-RIGHT:px; PADDING-LEFT:px; BACKGROUND: #fff; PADDING-BOTTOM:px;
MARGIN:px auto; WIDTH:px; PADDING-TOP:px
}
#Header {}{
BACKGROUND: url(../images/blue/header_bg.gif) repeat-x left top
}
#Page_left {}{
FLOAT: left; MARGIN:pxpxpx; WIDTH:px
}
#Page_right {}{
FLOAT: right; MARGIN:pxpx; WIDTH:px
}
#Footer {}{
PADDING-RIGHT:px; BORDER-TOP: #eeepx solid; PADDING-LEFT:px; PADDING-BOTTOM:
px; COLOR: #aaa; PADDING-TOP:px; TEXT-ALIGN: left
}
.Area_title {}{
PADDING-RIGHT:px; BORDER-TOP: #cpx solid; MARGIN-TOP:px; PADDING-LEFT:px;
FONT-WEIGHT: bold; FONT-SIZE:px; PADDING-BOTTOM:px; COLOR: #d; PADDING-TOP:px
}
.Area_content {}{
PADDING-RIGHT:px; PADDING-LEFT:px; PADDING-BOTTOM:px; PADDING-TOP:px
}
.Area_button {}{
MARGIN-TOP:px; PADDING-LEFT:px
}
.Area_button IMG {}{
VERTICAL-ALIGN:px
}
.float_left {}{
FLOAT: left
}
.float_right {}{
FLOAT: right
}
.content_title {}{
PADDING-RIGHT:px; PADDING-LEFT:px; FONT-WEIGHT: bold; PADDING-BOTTOM:px; COLOR:
#; PADDING-TOP:px
}
.relative {}{
PADDING-RIGHT:px; BORDER-TOP: #cpx solid; PADDING-LEFT:px; LIST-STYLE-
POSITION: inside; BACKGROUND: none transparent scroll repeat%%; LIST-STYLE-IMAGE: url
(../images/blue/icon_list.gif); PADDING-BOTTOM:px; MARGIN:pxpxpx; PADDING-TOP:px
}
.relative LI {}{
PADDING-RIGHT:px; PADDING-LEFT:px; FONT-WEIGHT: normal; PADDING-BOTTOM:px;
MARGIN:pxpxpx; COLOR: #; PADDING-TOP:px; BORDER-BOTTOM: #dddpx solid
}
{}{
PADDING-RIGHT:px; PADDING-LEFT:px; PADDING-BOTTOM:px; MARGIN:px; PADDING-TOP:
px
}
BODY {}{
BACKGROUND: #eee
}
BODY {}{
FONT:px "宋体",Tahoma; COLOR: #
}
DIV {}{
FONT:px "宋体",Tahoma; COLOR: #
}
TD {}{
FONT:px "宋体",Tahoma; COLOR: #
}
SPAN {}{
FONT:px "宋体",Tahoma; COLOR: #
}
SELECT {}{
FONT:px "宋体",Tahoma; COLOR: #
}
P {}{
FONT:px "宋体",Tahoma; COLOR: #
}
IMG {}{
BORDER-TOP-WIDTH:px; BORDER-LEFT-WIDTH:px; BORDER-BOTTOM-WIDTH:px; BORDER-
RIGHT-WIDTH:px
}
A {}{
COLOR: #; TEXT-DECORATION: none
}
A:hover {}{
COLOR: #b; TEXT-DECORATION: none
}
INPUT {}{
FONT:px "宋体",Tahoma
}
INPUT.button {}{
BORDER-TOP-WIDTH:px; PADDING-RIGHT:px; PADDING-LEFT:px; BORDER-LEFT-WIDTH:
px; BACKGROUND: url(../images/blue/button_bg.gif) #ada repeat-x left top; BORDER-
BOTTOM-WIDTH:px; PADDING-BOTTOM:px; CURSOR: hand; COLOR: #fff; MARGIN-RIGHT:px;
PADDING-TOP:px; BORDER-RIGHT-WIDTH:px
}
INPUT.button_dis {}{
BORDER-TOP-WIDTH:px; PADDING-RIGHT:px; PADDING-LEFT:px; BORDER-LEFT-WIDTH:
px; BORDER-BOTTOM-WIDTH:px; PADDING-BOTTOM:px; CURSOR: hand; COLOR: #fff; MARGIN-RIGHT:
px; PADDING-TOP:px; BORDER-RIGHT-WIDTH:px
}
UL {}{
PADDING-LEFT:px; FONT-WEIGHT: bold; LIST-STYLE-POSITION: outside; BACKGROUND: url
(../images/icon_ul.gif) no-repeat left top; LIST-STYLE-IMAGE: url
(../images/blue/icon_list.gif); MARGIN:px; COLOR: #
}
LI {}{
PADDING-RIGHT:px; PADDING-LEFT:px; FONT-WEIGHT: normal; PADDING-BOTTOM:px;
MARGIN:pxpxpx; COLOR: #; PADDING-TOP:px
}
.clear {}{
CLEAR: both
}
.top_margin {}{
MARGIN:pxpxpxpx
}
.text_bold {}{
FONT-WEIGHT: bold
}
.step_on .text_content {}{
COLOR: #
}
.text_content {}{
PADDING-RIGHT:px; PADDING-LEFT:px; PADDING-BOTTOM:px; PADDING-TOP:px; BORDER
-BOTTOM: #eeepx solid
}
.text_red {}{
COLOR: #b
}
A.text_red:hover {}{
COLOR: #
}
.req {}{
FONT-WEIGHT: bold; COLOR: #b
}
.info {}{
COLOR: #
}
.dark {}{
COLOR: #
}
.text_big {}{
FONT-SIZE:px; COLOR: #; LINE-HEIGHT:px
}
.big {}{
FONT-SIZE:px
}
.reg_flow {}{
PADDING-RIGHT:px; PADDING-LEFT:px; FONT-WEIGHT: normal; FONT-SIZE:px;
BACKGROUND: #fff; PADDING-BOTTOM:px; MARGIN:pxpxpx; COLOR: #; PADDING-TOP:
px
}
.reg_title {}{
PADDING-RIGHT:px; PADDING-LEFT:px; FONT-WEIGHT: bold; FONT-SIZE:px;
BACKGROUND: url(../images/icon_reg.gif) no-repeat left top; PADDING-BOTTOM:px; COLOR:
#d; PADDING-TOP:px
}
.flow_focus {}{
FONT-WEIGHT: bold; COLOR: #b
}
.flow_undo {}{
COLOR: #
}
.flow_done {}{
COLOR: #
}
.image_safe {}{
PADDING-LEFT:px; BACKGROUND: url(../images/icon_safe_big.gif) no-repeat left top
}
.text_success {}{
BORDER-RIGHT: #cpx solid; PADDING-RIGHT:px; BORDER-TOP: #cpx solid;
PADDING-LEFT:px; BACKGROUND: url(../images/blue/icon_success.gif) #ffff no-repeatpx
%; PADDING-BOTTOM:px; BORDER-LEFT: #cpx solid; PADDING-TOP:px; BORDER-BOTTOM:
#cpx solid
}
.text_notice {}{
BORDER-RIGHT: #cpx solid; PADDING-RIGHT:px; BORDER-TOP: #cpx solid;
PADDING-LEFT:px; BACKGROUND: url(../images/blue/icon_gantan.gif) #ffff no-repeatpx
%; PADDING-BOTTOM:px; BORDER-LEFT: #cpx solid; PADDING-TOP:px; BORDER-BOTTOM:
#cpx solid
}
.reg_info {}{
BORDER-RIGHT: #cpx solid; PADDING-RIGHT:px; BORDER-TOP: #cpx solid;
PADDING-LEFT:px; BACKGROUND: url(../images/blue/icon_info.gif) #ffff no-repeatpx
%; PADDING-BOTTOM:px; BORDER-LEFT: #cpx solid; PADDING-TOP:px; BORDER-BOTTOM: #c
px solid
}
.step_on .tip_off {}{
BORDER-RIGHT: #deefpx solid; PADDING-RIGHT:px; BORDER-TOP: #deefpx solid;
PADDING-LEFT:px; BACKGROUND: url(../images/blue/arr_tip_off.gif) #fff no-repeatpxpx;
PADDING-BOTTOM:px; BORDER-LEFT: #deefpx solid; COLOR: #; PADDING-TOP:px; BORDER-
BOTTOM: #deefpx solid
}
.tip_off {}{
PADDING-RIGHT:px; PADDING-LEFT:px; BACKGROUND: url
(../images/blue/arr_tip_off.gif) #fff no-repeatpxpx; PADDING-BOTTOM:px; COLOR: #;
PADDING-TOP:px
}
.tip_on {}{
BORDER-RIGHT: #px solid; PADDING-RIGHT:px; BORDER-TOP: #px solid;
PADDING-LEFT:px; BACKGROUND: url(../images/blue/arr_tip_on.gif) #efde no-repeatpx
px; PADDING-BOTTOM:px; BORDER-LEFT: #px solid; COLOR: #; PADDING-TOP:px;
BORDER-BOTTOM: #px solid
}
.tip_on IMG {}{
VERTICAL-ALIGN: top
}
.tip_off IMG {}{
VERTICAL-ALIGN: top
}
.step_on {}{
PADDING-RIGHT:px; PADDING-LEFT:px; BACKGROUND: #fff; PADDING-BOTTOM:px;
PADDING-TOP:px
}
.step_off {}{
PADDING-RIGHT:px; PADDING-LEFT:px; BACKGROUND: #fff; PADDING-BOTTOM:px;
PADDING-TOP:px
}
.step_on .content_title {}{
COLOR: #
}
P {}{
MARGIN:pxpx; TEXT-INDENT:em
}
.btn_letter {}{
BORDER-LEFT-COLOR: #bebd; FILTER: progid:DXImageTransform.Microsoft.Gradient
(GradientType=,StartColorStr=#ffffff, EndColorStr=#DDDCDC); BORDER-BOTTOM-COLOR: #cb;
COLOR: #bc; BORDER-TOP-COLOR: #bebd; BORDER-RIGHT-COLOR: #cb
}
.btn_num {}{
BORDER-LEFT-COLOR: #ebff; FILTER: progid:DXImageTransform.Microsoft.Gradient
(GradientType=, StartColorStr=#ffffff, EndColorStr=#BD); BORDER-BOTTOM-COLOR: #ebff;
COLOR: black; BORDER-TOP-COLOR: #ebff; BORDER-RIGHT-COLOR: #ebff
}

想还原事例，又怕麻烦的朋友，也可以留下Email,将发到您邮箱！水平有限，写不出多高深
和理论性较强的文章，只能发些实用的东西给大家.
Ps:一周一博，工作太忙，时间太少！
小键盘本地下载下载此文件 大键盘本地下载下载此文件