网页 密码框 小键盘效果

为了增加输入信息的安全性，有些时候我们在输入密码等信息时，需要启动小键盘输入，下面介绍一种在网页中添加小键盘输入的方法。

一个实现小键盘效果的JS文件keypad.js:

//定义当前是否大写的状态
var CapsLockValue=0;

var check;
function setVariables() {
tablewidth=630; // logo width, in pixels
tableheight=20; // logo height, in pixels
if (navigator.appName == "Netscape") {
horz=".left";
vert=".top";
docStyle="document.";
styleDoc="";
innerW="windows.innerWidth";
innerH="windows.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 (check) {
objectXY="softkeyboard";
var availableX=eval_r(innerW);
var availableY=eval_r(innerH);
var currentX=eval_r(offsetX);
var currentY=eval_r(offsetY);
x=availableX-tablewidth+currentX;
//y=availableY-tableheight+currentY;
y=currentY;

evalMove();
}
setTimeout("checkLocation()",0);
}
function evalMove() {
//eval_r(docStyle + objectXY + styleDoc + horz + "=" + x);
eval_r(docStyle + objectXY + styleDoc + vert + "=" + y);
}

self.onError=null;
currentX = currentY = 0;
whichIt = null;
lastScrollX = 0; lastScrollY = 0;
NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1: 0;
function heartBeat() {
if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
if(diffY != lastScrollY) {
percent = .1 * (diffY - lastScrollY);
if(percent > 0) 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 = .1 * (diffX - lastScrollX);
if(percent > 0) 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 < (stalkerx+stalkerwidth)) && (y > stalkery && y < (stalkery+stalkerheight))) return true;
else return false;}
function grabIt(e) {
check = false;
if(IE) {
whichIt = event.srcElement;
while (whichIt.id.indexOf("softkeyboard") == -1) {
whichIt = whichIt.parentElement;
if (whichIt == null) { return true; } }
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) {
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) whichIt.style.pixelTop = document.body.scrollTop;
if(whichIt.style.pixelLeft < document.body.scrollLeft) whichIt.style.pixelLeft = document.body.scrollLeft;
if(whichIt.style.pixelLeft > document.body.offsetWidth - document.body.scrollLeft - whichIt.style.pixelWidth - 20) whichIt.style.pixelLeft = document.body.offsetWidth - whichIt.style.pixelWidth - 20;
if(whichIt.style.pixelTop > document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5) whichIt.style.pixelTop = document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5;
event.returnValue = false;
} else {
whichIt.moveTo(e.pageX-StalkerTouchedX,e.pageY-StalkerTouchedY);
if(whichIt.left < 0+self.pageXOffset) whichIt.left = 0+self.pageXOffset;
if(whichIt.top < 0+self.pageYOffset) whichIt.top = 0+self.pageYOffset;
if( (whichIt.left + whichIt.clip.width) >= (windows.innerWidth+self.pageXOffset-17)) whichIt.left = ((windows.innerWidth+self.pageXOffset)-whichIt.clip.width)-17;
if( (whichIt.top + whichIt.clip.height) >= (windows.innerHeight+self.pageYOffset-17)) whichIt.top = ((windows.innerHeight+self.pageYOffset)-whichIt.clip.height)-17;
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; }
if(NS || IE) action = window.setInterval("heartBeat()",1);

document.write (' <DIV align=center id=\"softkeyboard\" name=\"softkeyboard\" style=\"position:absolute; left:220px; top:20px; width:514px; z-index:180;display:none\">');
document.write (' <table width=\"348\" border=\"0\" align=\"center\" cellpadding=\"3\" cellspacing=\"1\" bgcolor=\"#FF3300\">');
document.write (' <FORM name=Calc action=\"\" method=post autocomplete=\"off\">');
document.write (' <INPUT type=hidden value=ok name=action2>');
document.write (' <tr> ');
document.write (' <td align=\"left\" bgcolor=\"#FF3300\" align=\"center\"> <INPUT class=td1b type=password size=18 value=\"\" name=password> ');
document.write (' <INPUT class=button type=button value=输入完毕 name=\"Submit3\" onclick=\"OverInput(curEditName);\"> <INPUT class=button type=reset value=输错重来 name=\"Submit23\"> ');
document.write (' <input class=button type=button value=\" × \" name=\"Submit222\" onclick=\"closekeyboard(curEditName);\"> </td>');
document.write (' </tr>');
document.write (' <tr> ');
document.write (' <td align=\"center\" bgcolor=\"#FFFFFF\" align=\"center\"> <table align=\"center\" width=\"98%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">');
document.write (' <tr align=\"left\" valign=\"middle\"> ');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'1\');\" value=\" 1 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'2\');\" value=\" 2 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'3\');\" value=\" 3 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'4\');\" value=\" 4 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'5\');\" value=\" 5 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'6\');\" value=\" 6 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'7\');\" value=\" 7 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'8\');\" value=\" 8 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'9\');\" value=\" 9 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'0\');\" value=\" 0 \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'-\');\" value=\" - \"></td>');
document.write (' <td><input name=\"button10\" type=button value=\"退格\" onclick=\"setpassvalue();\"> ');
document.write (' </td>');
document.write (' <td> </td>');
document.write (' </tr>');
document.write (' <tr align=\"left\" valign=\"middle\"> ');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'q\');\" value=\" q \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'w\');\" value=\" w \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'e\');\" value=\" e \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'r\');\" value=\" r \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'t\');\" value=\" t \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'y\');\" value=\" y \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'u\');\" value=\" u \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'i\');\" value=\" i \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'o\');\" value=\" o \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'p\');\" value=\" p \"></td>');
document.write (' <td> ');
document.write (' <input name=\"button6\" type=button onClick=\"addValue(\':\');\" value=\" : \"></td>');
document.write (' <td><input name=\"button12\" type=button onclick=\"OverInput(curEditName);\" value=\"回车\"> ');
document.write (' </td>');
document.write (' <td> ');
document.write (' </td>');
document.write (' </tr>');
document.write (' <tr align=\"left\" valign=\"middle\"> ');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'a\');\" value=\" a \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'s\');\" value=\" s \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'d\');\" value=\" d \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'f\');\" value=\" f \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'g\');\" value=\" g \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'h\');\" value=\" h \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'j\');\" value=\" j \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'k\');\" value=\" k \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'l\');\" value=\" l \"></td>');
document.write (' <td> ');
document.write (' <input name=\"button8\" type=button onClick=\"addValue(\'[\');\" value=\" [ \"></td>');
document.write (' <td> ');
document.write (' <input name=\"button9\" type=button onClick=\"addValue(\']\');\" value=\" ] \"></td>');
document.write (' <td colspan=\"2\"><input name=\"button9\" type=button onClick=\"setCapsLock();\" value=\"切换\"></td>');
document.write (' </tr>');
document.write (' <tr align=\"left\" valign=\"middle\"> ');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'z\');\" value=\" z \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'x\');\" value=\" x \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'c\');\" value=\" c \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'v\');\" value=\" v \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'b\');\" value=\" b \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'n\');\" value=\" n \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'m\');\" value=\" m \"></td>');
document.write (' <td> ');
document.write (' <input name=\"button3\" type=button onClick=\"addValue(\'<\');\" value=\" < \"></td>');
document.write (' <td> ');
document.write (' <input name=\"button4\" type=button onClick=\"addValue(\'>\');\" value=\" > \"></td>');
document.write (' <td> ');
document.write (' <input name=\"button5\" type=button onClick=\"addValue(\'(\');\" value=\" ( \"></td>');
document.write (' <td> ');
document.write (' <input name=\"button7\" type=button onClick=\"addValue(\')\');\" value=\" ) \"></td>');
document.write (' <td colspan=\"2\"> ');
document.write (' <input name=\"showCapsLockValue\" type=reset value=\"小写\"></td>');
document.write (' </tr>');
document.write (' <tr align=\"left\" valign=\"middle\"> ');
document.write (' <td> ');
document.write (' <input name=\"button2\" type=button onClick=\"addValue(\',\');\" value=\" , \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'~\');\" value=\" ~ \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'!\');\" value=\" ! \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'@\');\" value=\" @ \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'#\');\" value=\" # \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'$\');\" value=\" $ \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'%\');\" value=\" % \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'^\');\" value=\" ^ \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'*\');\" value=\" * \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'|\');\" value=\" | \"></td>');
document.write (' <td> ');
document.write (' <input type=button onclick=\"addValue(\'?\');\" value=\" ? \"></td>');
document.write (' <td colspan=\"2\"><input name=\"button\" type=button onClick=\"addValue(\'=\');\" value=\" ＝ \"></td>');
document.write (' </tr>');
document.write (' </table></td>');
document.write (' </tr>');
document.write (' </FORM>');
document.write (' </table>');
document.write ('</DIV>');

//给输入的密码框添加新值
function addValue(newValue)
{
if (CapsLockValue==0)
{
Calc.password.value += newValue;
}
else
{
Calc.password.value += newValue.toUpperCase();
}
}
//实现BackSpace键的功能
function setpassvalue()
{
var longnum=Calc.password.value.length;
var num
num=Calc.password.value.substr(0,longnum-1);
Calc.password.value=num;
}
//输入完毕
function OverInput(theForm)
{
eval_r("var theForm="+theForm+";");
//m_pass.mempass.value=Calc.password.value;
theForm.value=Calc.password.value;
//alert(theForm.value);
//theForm.value=m_pass.mempass.value;
softkeyboard.style.display="none";
Calc.password.value="";
}
//关闭软键盘
function closekeyboard(theForm)
{
//eval_r("var theForm="+theForm+";");
//theForm.value="";
softkeyboard.style.display="none";
//Calc.password.value="";

}
//显示软键盘
function showkeyboard()
{
softkeyboard.style.display="block";
}

//设置是否大写的值
function setCapsLock()
{
if (CapsLockValue==0)
{
CapsLockValue=1
Calc.showCapsLockValue.value="大写";
}
else
{
CapsLockValue=0
Calc.showCapsLockValue.value="小写";
}
}

测试页面test.html:

<HTML>
 <HEAD>
<script type="text/javascript" language="javascript"
   src="keypad.js"></script>
<script>
//定义当前需用软键盘的表单和控件的名称
var curEditName
curEditName="form1.Password"
</script>
</HEAD>
<body>

<form name="form1" method="post">
<table border="0" width="250" cellspacing="0" cellpadding="2">
<tr>
<td width="100%" align="right" nowrap class="cn90">输入：
<input type="password" name="Password" size="14" class="input" tabindex="1" onclick="showkeyboard(curEditName)" style={cursor:hand;}>
</td>

</tr>
</table>
</form>
</BODY>
</HTML>