原理
通过jquery修改input的type属性，为password时是隐藏，text则是显示。另外把眼睛的样式打开。
很多时候看着很强大的功能其实很简单
html
<div class="login-form"> <form class="form"> <div> <i class="show_pass glyphicon glyphicon-eye-open"></i> <input type="password" class="password" placeholder="Password" value="2"> <input type="submit" class="submit btn btn-success btn-xs" value="登陆"> </div> </form></div>
jquery
<script> $('.show_pass').click(function () { let pass_type = $('input.password').attr('type'); if (pass_type === 'password' ){ $('input.password').attr('type', 'text'); $('.show_pass').removeClass('glyphicon-eye-open').addClass('glyphicon-eye-close'); } else { $('input.password').attr('type', 'password'); $('.show_pass').removeClass('glyphicon-eye-close').addClass('glyphicon-eye-open'); } })</script>