$(document).ready(function() {
// #login-box password field
$('#password').attr('type', 'text');
$('#password').val('Password');
});
这是为了将password类型的#password输入字段(id="password")更改为普通的文本字段，然后填充文本"password"。
但这并不奏效。为什么?
表格如下:
<form enctype="application/x-www-form-urlencoded" method="post" action="/auth/sign-in">
<ol>
<li>
<div class="element">
<input type="text" name="username" id="username" value="Prihlasovacie meno" class="input-text" />
</div>
</li>
<li>
<div class="element">
<input type="password" name="password" id="password" value="" class="input-text" />
</div>
</li>
<li class="button">
<div class="button">
<input type="submit" name="sign_in" id="sign_in" value="Prihlásiť" class="input-submit" />
</div>
</li>
</ol>
</form>
Here is a method which uses an image next to the password field to toggle between seeing the password (text input) and not seeing it (password input). I use an "open eye" and "closed eye" image, but you can use whatever suits you. The way it works is having two inputs/images and upon clicking the image, the value is copied from the visible input to the hidden one, and then their visibility is swapped. Unlike many of the other answers which use hardcoded names, this one is general enough to use it multiple times on a page. It also degrades gracefully if JavaScript is unavailable.
这是其中两个在一页上的样子。在这个例子中，密码a是通过点击它的眼睛来显示的。
$(document).ready(function() {
$('img.eye').show();
$('span.pnt').on('click', 'img', function() {
var self = $(this);
var myinp = self.prev();
var myspan = self.parent();
var mypnt = myspan.parent();
var otspan = mypnt.children().not(myspan);
var otinp = otspan.children().first();
otinp.val(myinp.val());
myspan.hide();
otspan.show();
});
});
img.eye {
vertical-align: middle;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<form>
<b>Password-A:</b>
<span class="pnt">
<span>
<input type="password" name="passa">
<img src="eye-open.png" class="eye" alt="O" style="display:none">
</span>
<span style="display:none">
<input type="text">
<img src="eye-closed.png" class="eye" alt="*">
</span>
</span>
</form>
<form>
<b>Password-B:</b>
<span class="pnt">
<span>
<input type="password" name="passb">
<img src="eye-open.png" class="eye" alt="O" style="display:none">
</span>
<span style="display:none">
<input type="text">
<img src="eye-closed.png" class="eye" alt="*">
</span>
</span>
</form>
使用jQuery的终极方法:
将原始输入字段隐藏在屏幕中。
$("#Password").hide(); //Hide it first
var old_id = $("#Password").attr("id"); //Store ID of hidden input for later use
$("#Password").attr("id","Password_hidden"); //Change ID for hidden input
通过JavaScript创建新的输入字段。
var new_input = document.createElement("input");
将ID和值从隐藏的输入字段迁移到新的输入字段。
new_input.setAttribute("id", old_id); //Assign old hidden input ID to new input
new_input.setAttribute("type","text"); //Set proper type
new_input.value = $("#Password_hidden").val(); //Transfer the value to new input
$("#Password_hidden").after(new_input); //Add new input right behind the hidden input
为了解决IE上的错误，比如类型属性不能被改变，你可能会发现下面的方法很有用:
将click/focus/change事件附加到新的输入元素，以便在隐藏的输入上触发相同的事件。
$(new_input).click(function(){$("#Password_hidden").click();});
//Replicate above line for all other events like focus, change and so on...
旧的隐藏输入元素仍然在DOM中，因此将与新输入元素触发的事件进行反应。当ID交换时，新的输入元素将像旧的输入元素一样，并响应对旧的隐藏输入的ID的任何函数调用，但看起来不同。
有点棘手，但有效!!: -)
作为浏览器安全模型的一部分，很可能会阻止该操作。
编辑:实际上，现在在Safari中测试，我得到的错误类型属性不能更改。
编辑2:这似乎是一个错误直接从jQuery。使用以下直接的DOM代码就可以了:
var pass = document.createElement('input');
pass.type = 'password';
document.body.appendChild(pass);
pass.type = 'text';
pass.value = 'Password';
编辑3:直接从jQuery源代码来看，这似乎与IE有关(可能是一个bug或他们安全模型的一部分，但jQuery不是特定的):
// We can't allow the type property to be changed (since it causes problems in IE)
if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
throw "type property can't be changed";
