Javascript实现登录记住用户名和密码功能

　　<script type="text/javascript">
  $(document).ready(function () {
   $("#UserAccount").focus();
   //记住用户名和密码
   $('#remebers').click(function () {
    if ($("#UserAccount").val() == "") {
     alert("用户名不能为空！");
    }
    if($("#UserPassword").val() == "")
    {
     alert("密码不能为空！");
    }
    else {
     if ($('#remebers').attr("checked")) {
      setCookie("uname", $("#UserAccount").val(), 60);
      setCookie("upwd", $("#UserPassword").val(), 60);
     }
     else {
      delCookie("uname");
      delCookie("upwd");
     }
    }
   });
   if (getCookie("uname") != null)
   {
    $('#remebers').attr("checked", "checked");
    $('#UserAccount').val(getCookie("uname"));
    $('#UserPassword').val(getCookie("upwd"));
   }
  })
  //写cookies
  function setCookie(name, value) {
   var Days = 30;
   var exp = new Date();
   exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000);
   document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString();
  }
  //读取cookies 
  function getCookie(name) {
   var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
   if (arr = document.cookie.match(reg)) return unescape(arr[2]);
   else return null;
  }
  //删除cookies 
  function delCookie(name) {
   var exp = new Date();
   exp.setTime(exp.getTime() - 1);
   var cval = getCookie(name);
   if (cval != null) document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString();
  }
 </script>
　　<div class="main">
     <section id="login_form">
      @using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post))
      {
       @Html.AntiForgeryToken()
       @Html.ValidationSummary(true)
       <table>
        <tr>
         <td align="right">账　号：</td>
         <td align="left"><input type="text" id="UserAccount" name="UserAccount" /> @Html.ValidationMessageFor(m => m.UserAccount)</td>
        </tr>
        <tr>
         <td align="right">密　码：</td>
         <td align="left">
          <input type="password" id="UserPassword" name="UserPassword" />
@Html.ValidationMessageFor(m => m.UserPassword)
         </td>
        </tr>
        <tr>
         <td></td>
         <td align="left">
          <input name="remebers" id="remebers" type="checkbox" />
          <span >记住用户名和密码</span>
         </td>
        </tr>
        <tr>
         <td></td>
         <td align="left">
          <input type="submit" name="submit" id="submit" value=""  />
          &nbsp;
          <input type="reset" name="reset" id="reset" value=""  />
         </td>
        </tr>
       </table>
      }
     </section>
     <div class="note">
      * 不要在公共场合保存登录信息；<br />
      * 为了保证您的帐号安全，退出系统时请注销登录
      <span id="msg_tip"></span>
     </div>
    </div>