用javcscript记住用户名和密码保存在本地储存中，然后实现前端获取
<script type="text/javascript">
window.onload=function(){
var Id = localStorage.getItem("txtId");
if(Id != null) //如果缓存中有数据，则加载出来 B5教程网
{
document.getElementById("txtId").value = Id;
document.getElementById("txtPwd").value = localStorage.getItem("txtPwd");
document.getElementById("chkRem").checked = "checked";
}
}
//将账号与密码保存到Localstore
function remPwd() {
var check = document.getElementById("chkRem");
if(check.checked) //判断记住密码项是否勾选，是则记住密码到本地缓存
{
var id = document.getElementById("txtId").value;
var pwd = document.getElementById("txtPwd").value;
localStorage.setItem("txtId", id);
localStorage.setItem("txtPwd", pwd);
} else //否则就移除本地缓存
{
localStorage.removeItem("txtId");
localStorage.removeItem("txtPwd");
}
}
</script>
</head>
<body class="bg-black">
<div class="form-box" id="login-box" >
<div class="header">登录页面</div>
<form id="formLogin" action="user_loginApp.action" class="login" method="post">
<div class="body bg-gray">
<div class="form-group">
<input type="text" name="loginName" id="txtId" class="form-control" placeholder="请输入用户名" onblur="javascript:ok_or_errorBylogin(this)"/>
</div>
<div class="form-group">
<input type="password" name="password" id="txtPwd"class="form-control" placeholder="请输入密码" onBlur="javascript:ok_or_errorBylogin(this)" />
</div>
<div class="form-group">
<input type="checkbox" checked="checked" id="chkRem" name="remember_me"/> 记住密码
</div>
</div>
<div class="footer">
<button type="submit" class="btn bg-olive btn-block" id="login"
<hr>
<p>
<b>
XXXXXXX电子有限责任公司 </b> <br><b>XXXXXXXX有限责任公司<b> 联合开发<br /><b > 电话：0771-3304546</b><br>
</p>
</div></form>
</body>
</html>