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
1
window.onload=
2function()
3
{
4
password1=null;
5initCalc();
6
}
7var password1;
8var CapsLockValue=0;
9var checkSoftKey;
10function setVariables() {
11tablewidth=630;
12tableheight=20;
13
if (navigator.appName == "Netscape") {
14horz=".left";
15vert=".top";
16docStyle="document.";
17styleDoc="";
18innerW="window.innerWidth";
19innerH="window.innerHeight";
20offsetX="window.pageXOffset";
21offsetY="window.pageYOffset";
22
}
23else {
24horz=".pixelLeft";
25vert=".pixelTop";
26docStyle="";
27styleDoc=".style";
28innerW="document.body.clientWidth";
29innerH="document.body.clientHeight";
30offsetX="document.body.scrollLeft";
31offsetY="document.body.scrollTop";
32}
33}
34function checkLocation() {
35if (checkSoftKey) {
36objectXY="softkeyboard";
37var availableX=eval(innerW);
38var availableY=eval(innerH);
39var currentX=eval(offsetX);
40var currentY=eval(offsetY);
41x=availableX-tablewidth+currentX;
42y=currentY;
43evalMove();
44}
45setTimeout("checkLocation()",0);
46}
47function evalMove() {
48eval(docStyle + objectXY + styleDoc + vert + "=" + y);
49}
50self.onError=null;
51currentX = currentY = 0;
52whichIt = null;
53lastScrollX = 0; lastScrollY = 0;
54NS = (document.layers) ? 1 : 0;
55IE = (document.all) ? 1: 0;
56function heartBeat() {
57if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
58if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
59if(diffY != lastScrollY) {
60percent = .1 * (diffY - lastScrollY);
61if(percent > 0) percent = Math.ceil(percent);
62else percent = Math.floor(percent);
63if(IE) document.all.softkeyboard.style.pixelTop += percent;
64if(NS) document.softkeyboard.top += percent;
65lastScrollY = lastScrollY + percent;}
66if(diffX != lastScrollX) {
67percent = .1 * (diffX - lastScrollX);
68if(percent > 0) percent = Math.ceil(percent);
69else percent = Math.floor(percent);
70if(IE) document.all.softkeyboard.style.pixelLeft += percent;
71if(NS) document.softkeyboard.left += percent;
72lastScrollX = lastScrollX + percent; } }
73function checkFocus(x,y) {
74stalkerx = document.softkeyboard.pageX;
75stalkery = document.softkeyboard.pageY;
76stalkerwidth = document.softkeyboard.clip.width;
77stalkerheight = document.softkeyboard.clip.height;
78if( (x > stalkerx && x < (stalkerx+stalkerwidth)) && (y > stalkery && y < (stalkery+stalkerheight))) return true;
79else return false;}
80function grabIt(e) {
81checkSoftKey = false;
82if(IE) {
83whichIt = event.srcElement;
84while (whichIt.id!=null&&whichIt.id.indexOf("softkeyboard") == -1) {
85whichIt = whichIt.parentElement;
86if (whichIt == null) { return true; } }
87if(whichIt.style!=null){
88whichIt.style.pixelLeft = whichIt.offsetLeft;
89whichIt.style.pixelTop = whichIt.offsetTop;
90}
91currentX = (event.clientX + document.body.scrollLeft);
92currentY = (event.clientY + document.body.scrollTop);
93} else {
94window.captureEvents(Event.MOUSEMOVE);
95if(checkFocus (e.pageX,e.pageY)) {
96whichIt = document.softkeyboard;
97StalkerTouchedX = e.pageX-document.softkeyboard.pageX;
98StalkerTouchedY = e.pageY-document.softkeyboard.pageY;} }
99return true; }
100function moveIt(e) {
101if (whichIt == null) { return false; }
102if(IE) {
103if(whichIt.style!=null){
104newX = (event.clientX + document.body.scrollLeft);
105newY = (event.clientY + document.body.scrollTop);
106distanceX = (newX - currentX); distanceY = (newY - currentY);
107currentX = newX; currentY = newY;
108whichIt.style.pixelLeft += distanceX;
109whichIt.style.pixelTop += distanceY;
110if(whichIt.style.pixelTop < document.body.scrollTop) whichIt.style.pixelTop = document.body.scrollTop;
111if(whichIt.style.pixelLeft < document.body.scrollLeft) whichIt.style.pixelLeft = document.body.scrollLeft;
112if(whichIt.style.pixelLeft > document.body.offsetWidth - document.body.scrollLeft - whichIt.style.pixelWidth - 20) whichIt.style.pixelLeft = document.body.offsetWidth - whichIt.style.pixelWidth - 20;
113if(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;
114event.returnValue = false;
115}
116} else {
117whichIt.moveTo(e.pageX-StalkerTouchedX,e.pageY-StalkerTouchedY);
118if(whichIt.left < 0+self.pageXOffset) whichIt.left = 0+self.pageXOffset;
119if(whichIt.top < 0+self.pageYOffset) whichIt.top = 0+self.pageYOffset;
120if( (whichIt.left + whichIt.clip.width) >= (window.innerWidth+self.pageXOffset-17)) whichIt.left = ((window.innerWidth+self.pageXOffset)-whichIt.clip.width)-17;
121if( (whichIt.top + whichIt.clip.height) >= (window.innerHeight+self.pageYOffset-17)) whichIt.top = ((window.innerHeight+self.pageYOffset)-whichIt.clip.height)-17;
122return false;}
123return false; }
124function dropIt() {whichIt = null;
125if(NS) window.releaseEvents (Event.MOUSEMOVE);
126return true; }
127if(NS) {window.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN);
128window.onmousedown = grabIt;
129window.onmousemove = moveIt;
130window.onmouseup = dropIt; }
131if(IE) {
132document.onmousedown = grabIt;
133document.onmousemove = moveIt;
134document.onmouseup = dropIt; }
135var style1="<style>";
136style1+=".btn_letter {BORDER-RIGHT: 1px solid; PADDING-RIGHT: 1px; BORDER-TOP: 1px solid; PADDING-LEFT: 2px;FONT-SIZE: 14px; BORDER-LEFT: 1px solid; CURSOR: hand;PADDING-TOP: 1px; BORDER-BOTTOM: 1px solid; width:25px; height:20px;}";
137style1+=".btn_num {width:25px;BORDER-RIGHT:1px solid; PADDING-RIGHT: 1px; BORDER-TOP: 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; BORDER-LEFT: 1px solid; CURSOR: hand; PADDING-TOP: 1px; BORDER-BOTTOM: 1px solid;height:20px;}";
138style1+=".table_title {FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#B2DEF7, EndColorStr=#7AB7DA); height:26px;padding-top: 3px;}";
139style1+=".btn_input {BORDER-RIGHT: #2C59AA 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #2C59AA 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#C3DAF5); BORDER-LEFT: #2C59AA 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #2C59AA 1px solid}";
140style1+="</style>";
141document.write(style1);
142document.write("<DIV align=center id=\"softkeyboard\" name=\"softkeyboard\" style=\"position:absolute; left:0px; top:0px; width:400px; z-index:180;display:none\"><table id=\"CalcTable\" width=\"\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\" bgcolor=\"\"><FORM id=Calc name=Calc action=\"\" method=post autocomplete=\"off\"><tr><td class=\"table_title\" align=\"right\" valign=\"middle\" bgcolor=\"\" style=\"cursor: default;height:30\"><INPUT type=hidden value=\"\" name=password><INPUT type=hidden value=ok name=action2> <font style=\"font-weight:bold; font-size:13px; color:#075BC3\">博客园 密码输入器</font>                 <INPUT id=useKey class=\"btn_input\" type=button value=\"使用键盘输入\" bgtype=\"1\" onclick=\"password1.readOnly=0;password1.focus();closekeyboard();password1.value='';\"><span style=\"width:2px;\"></span></td></tr><tr align=\"center\"><td align=\"center\" bgcolor=\"#FFFFFF\"><table align=\"center\" width=\"%\" border=\"0\" cellspacing=\"1\" cellpadding=\"0\">\n<tr align=\"left\" valign=\"middle\"> \n<td> <input type=button value=\" ~ \"></td>\n<td> <input type=button value=\" ! \"></td>\n<td> <input type=button value=\" @ \"></td>\n<td> <input type=button value=\" # \"></td>\n<td> <input type=button value=\" $ \"></td>\n<td><input type=button value=\" % \"></td>\n<td><input type=button value=\" ^ \"></td>\n<td> <input type=button value=\" & \"></td>\n<td><input type=button value=\" * \"></td>\n<td><input type=button value=\" ( \"></td>\n<td><input type=button value=\" ) \"></td>\n<td><input type=button value=\" _ \"></td>\n<td> <input type=button value=\" + \"></td>\n<td><input type=button value=\" | \"></td>\n<td colspan=\"1\" rowspan=\"2\"> <input name=\"button10\" type=button value=\" 退格\" onclick=\"setpassvalue();\" onDblClick=\"setpassvalue();\" style=\"width:100px;height:40px\"> \n</td>\n</tr>\n<tr align=\"left\" valign=\"middle\"> \n<td><input type=button value=\" ` \"></td>\n<td><input type=button bgtype=\"2\" name=\"button_number1\" value=\" 1 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number2\" value=\" 2 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number3\" value=\" 3 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number4\" value=\" 4 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number5\" value=\" 5 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number6\" value=\" 6 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number7\" value=\" 7 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number8\" value=\" 8 \"></td>\n<td> <input type=button bgtype=\"2\" name=\"button_number9\" value=\" 9 \"></td>\n<td> <input bgtype=\"2\" name=\"button_number0\" type=button value=\" 0 \"></td>\n<td> <input type=button value=\" - \"></td>\n<td> <input type=button value=\" = \"></td>\n<td> <input type=button value=\" \\ \"></td>\n<td> </td>\n</tr>\n<tr align=\"left\" valign=\"middle\"> \n<td> <input type=button value=\" q \"></td>\n<td> <input type=button value=\" w \"></td>\n<td> <input type=button value=\" e \"></td>\n<td> <input type=button value=\" r \"></td>\n<td> <input type=button value=\" t \"></td>\n<td> <input type=button value=\" y \"></td>\n<td> <input type=button value=\" u \"></td>\n<td> <input type=button value=\" i \"></td>\n<td> <input type=button value=\" o \"></td>\n<td> <input name=\"button8\" type=button value=\" p \"></td>\n<td> <Input name=\"button9\" type=button value=\" { \"></td>\n<td> <input type=button value=\" } \"></td>\n<td> <input type=button value=\" [ \"></td>\n<td> <input type=button value=\" ] \"></td>\n<td><input name=\"button9\" type=button onClick=\"capsLockText();setCapsLock();\" onDblClick=\"capsLockText();setCapsLock();\" value=\"切换大/小写\" style=\"width:100px;\"></td>\n</tr>\n<tr align=\"left\" valign=\"middle\"> \n<td> <input type=button value=\" a \"></td>\n<td> <input type=button value=\" s \"></td>\n<td> <input type=button value=\" d \"></td>\n<td> <input type=button value=\" f \"></td>\n<td> <input type=button value=\" g \"></td>\n<td> <input type=button value=\" h \"></td>\n<td> <input type=button value=\" j \"></td>\n<td> <input name=\"button3\" type=button value=\" k \"></td>\n<td> <input name=\"button4\" type=button value=\" l \"></td>\n<td> <input name=\"button5\" type=button value=\" : \"></td>\n<td> <input name=\"button7\" type=button value=\" " \"></td>\n<td> <input type=button value=\" ; \"></td>\n<td> <input type=button value=\" ' \"></td>\n<td rowspan=\"2\" colspan=\"2\"> <input name=\"button12\" type=button onclick=\"OverInput();\" value=\" 确定 \" style=\"width:126px;height:42px;\"></td>\n</tr>\n<tr align=\"left\" valign=\"middle\"> \n<td><input name=\"button2\" type=button value=\" z \"></td>\n<td> <input type=button value=\" x \"></td>\n<td> <input type=button value=\" c \"></td>\n<td> <input type=button value=\" v \"></td>\n<td> <input type=button value=\" b \"></td>\n<td> <input type=button value=\" n \"></td>\n<td> <input type=button value=\" m \"></td>\n<td> <input type=button value=\