如何在 Android 手机中进行密码屏蔽,例如当我们输入一个键时,它会显示一个键几秒钟并将其更改为“*”。我尝试了密码屏蔽中提到的插件,因为在使用 js 的手机中它不是最佳的。并且 jsfiddle http://jsfiddle.net/medopal/X37Wz/无法处理退格和删除。您能否建议任何其他方法来做到这一点?只使用jquery而不使用插件。
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17004 次
3 回答
3
在这里,我已经为上述查询完成了完整的解决方案箱。请检查演示链接,如下所示:
演示: http ://codebins.com/bin/4ldqp8u
HTML:
<div id="panel">
<input type="text" id="txtpwd" name="txtpwd" size="15"/>
<input type="text" id="txthidden" name="txthidden" size="15"/>
<div>
KeyCode Pressed:
<span id="keycode">
</span>
</div>
</div>
查询:
$(function() {
//Extends JQuery Methods to get current cursor postion in input text.
//GET CURSOR POSITION
jQuery.fn.getCursorPosition = function() {
if (this.lengh == 0) return -1;
return $(this).getSelectionStart();
}
jQuery.fn.getSelectionStart = function() {
if (this.lengh == 0) return -1;
input = this[0];
var pos = input.value.length;
if (input.createTextRange) {
var r = document.selection.createRange().duplicate();
r.moveEnd('character', input.value.length);
if (r.text == '') pos = input.value.length;
pos = input.value.lastIndexOf(r.text);
} else if (typeof(input.selectionStart) != "undefined") pos = input.selectionStart;
return pos;
}
//Bind Key Press event with password field
$("#txtpwd").keypress(function(e) {
setTimeout(function() {
maskPassword(e)
}, 500);
});
});
function generateStars(n) {
var stars = '';
for (var i = 0; i < n; i++) {
stars += '*';
}
return stars;
}
function maskPassword(e) {
var text = $('#txthidden').val().trim();
var stars = $('#txthidden').val().trim().length;
var unicode = e.keyCode ? e.keyCode : e.charCode;
$("#keycode").html(unicode);
//Get Current Cursor Position on Password Textbox
var curPos = $("#txtpwd").getCursorPosition();
var PwdLength = $("#txtpwd").val().trim().length;
if (unicode != 9 && unicode != 13 && unicode != 37 && unicode != 40 && unicode != 37 && unicode != 39) {
//If NOT <Back Space> OR <DEL> Then...
if (unicode != 8 && unicode != 46) {
text = text + String.fromCharCode(unicode);
stars += 1;
}
//If Press <Back Space> Or <DEL> Then...
else if ((unicode == 8 || unicode == 46) && stars != PwdLength) {
stars -= 1;
text = text.replace(text.charAt(curPos), "");
}
//Set New String on both input fields
$('#txthidden').val(text);
$('#txtpwd').val(generateStars(stars));
}
}
于 2012-08-06T07:58:55.187 回答
3
基于上面 codebins.com 代码的 keyur,这个很棒的小答案在这里https://stackoverflow.com/a/4843500/1056285和https://stackoverflow.com/a/1431109/1056285(用于使退格键实际删除没有错误)我调整了解决方案以考虑退格!
$(function() {
//Extends JQuery Methods to get current cursor postion in input text.
//GET CURSOR POSITION
jQuery.fn.getCursorPosition = function() {
if (this.lengh == 0) return -1;
return $(this).getSelectionStart();
}
jQuery.fn.getSelectionStart = function() {
if (this.lengh == 0) return -1;
input = this[0];
var pos = input.value.length;
if (input.createTextRange) {
var r = document.selection.createRange().duplicate();
r.moveEnd('character', input.value.length);
if (r.text == '') pos = input.value.length;
pos = input.value.lastIndexOf(r.text);
} else if (typeof(input.selectionStart) != "undefined") pos = input.selectionStart;
return pos;
}
//Bind Key Press event with password field
$("#txtpwd").keypress(function(e) {
setTimeout(function() {
maskPassword(e)
}, 500);
});
$("#txtpwd").keydown(function(e) {
if (e.keyCode == 8) {
setTimeout(function() {
maskPassword(e)
}, 1);
}
});
});
function generateStars(n) {
var stars = '';
for (var i = 0; i < n; i++) {
stars += '*';
}
return stars;
}
function maskPassword(e) {
var text = $('#txthidden').val();
var stars = $('#txthidden').val().length;
var unicode = e.keyCode ? e.keyCode : e.charCode;
$("#keycode").html(unicode);
//Get Current Cursor Position on Password Textbox
var curPos = $("#txtpwd").getCursorPosition();
var PwdLength = $("#txtpwd").val().length;
if (unicode != 9 && unicode != 13 && unicode != 37 && unicode != 40 && unicode != 37 && unicode != 39) {
//If NOT <Back Space> OR <DEL> Then...
if (unicode != 8 && unicode != 46) {
text = text + String.fromCharCode(unicode);
stars += 1;
}
//If Press <Back Space> Or <DEL> Then...
else if ((unicode == 8 || unicode == 46) && stars != PwdLength) {
stars -= 1;
text = text.substr(0, curPos) + text.substr(curPos + 1);
}
//Set New String on both input fields
$('#txthidden').val(text);
$('#txtpwd').val(generateStars(stars));
}
}
你可以看看下面: http ://codebins.com/bin/4ldqp8u/38
于 2014-05-12T11:52:14.510 回答
1
IE 10 具有该功能。可能有人可以撕掉它吗?:|
另外,我在此基础上编写了一个简单的代码片段,可以帮助您开始编写自己的代码。
编辑:在这里查看代码:
<form action="#" onclick="return false;">
<input type="text" id="pv" name="passval" value="password" /><br>
<input type="password" id="p" name="pass" value="passwordsd" /><br>
<button id="b">Show</button>
</form>
<script>
$("#b").mousedown(function(){
$("#pv").val($("#p").val());
}).mouseup(function(){
$("#pv").val("");
});
</script>
于 2012-08-06T06:35:14.547 回答