$(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>

当前回答

现在,你可以用

$("#password").prop("type", "text");

当然,你应该这样做

<input type="password" placeholder="Password" />

除了IE。在IE中也有占位符垫片来模仿这个功能。

其他回答

你试过使用.prop()吗?

$("#password").prop('type','text');

http://api.jquery.com/prop/

这样工作起来更容易:

document.querySelector('input[type=password]').setAttribute('type', 'text');

为了再次将其转回password字段,(假设password字段是带有文本类型的第二个输入标记):

document.querySelectorAll('input[type=text]')[1].setAttribute('type', 'password')

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>

这样就可以了。尽管可以改进为忽略现在不相关的属性。

插件:

(function($){
  $.fn.changeType = function(type) {  
    return this.each(function(i, elm) {
        var newElm = $("<input type=\""+type+"\" />");
        for(var iAttr = 0; iAttr < elm.attributes.length; iAttr++) {
            var attribute = elm.attributes[iAttr].name;
            if(attribute === "type") {
                continue;
            }
            newElm.attr(attribute, elm.attributes[iAttr].value);
        }
        $(elm).replaceWith(newElm);
    });
  };
})(jQuery);

用法:

$(":submit").changeType("checkbox");

小提琴:

http://jsfiddle.net/joshcomley/yX23U/

只需要创建一个新的字段来绕过这个安全的东西:

var $oldPassword = $("#password");
var $newPassword = $("<input type='text' />")
                          .val($oldPassword.val())
                          .appendTo($oldPassword.parent());
$oldPassword.remove();
$newPassword.attr('id','password');