cookie记住账号密码

引入外部js：jquery.cookie.js

(function(factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD
        define(['jquery'], factory);
    } else if (typeof exports === 'object') {
        // CommonJS
        factory(require('jquery'));
    } else {
        // Browser globals
        factory(jQuery);
    }
} (function($) {

    var pluses = /\+/g;

    function encode(s) {
        return config.raw ? s: encodeURIComponent(s);
    }

    function decode(s) {
        return config.raw ? s: decodeURIComponent(s);
    }

    function stringifyCookieValue(value) {
        return encode(config.json ? JSON.stringify(value) : String(value));
    }

    function parseCookieValue(s) {
        if (s.indexOf('"') === 0) {
            // This is a quoted cookie as according to RFC2068, unescape...
            s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
        }

        try {
            // Replace server-side written pluses with spaces.
            // If we can't decode the cookie, ignore it, it's unusable.
            // If we can't parse the cookie, ignore it, it's unusable.
            s = decodeURIComponent(s.replace(pluses, ' '));
            return config.json ? JSON.parse(s) : s;
        } catch(e) {}
    }

    function read(s, converter) {
        var value = config.raw ? s: parseCookieValue(s);
        return $.isFunction(converter) ? converter(value) : value;
    }

    var config = $.cookie = function(key, value, options) {

        // Write
        if (value !== undefined && !$.isFunction(value)) {
            options = $.extend({},
            config.defaults, options);

            if (typeof options.expires === 'number') {
                var days = options.expires,
                t = options.expires = new Date();
                t.setTime( + t + days * 864e + 5);
            }

            return (document.cookie = [encode(key), '=', stringifyCookieValue(value), options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
            options.path ? '; path=' + options.path: '', options.domain ? '; domain=' + options.domain: '', options.secure ? '; secure': ''].join(''));
        }

        // Read
        var result = key ? undefined: {};

        // To prevent the for loop in the first place assign an empty array
        // in case there are no cookies at all. Also prevents odd result when
        // calling $.cookie().
        var cookies = document.cookie ? document.cookie.split('; ') : [];

        for (var i = 0,
        l = cookies.length; i < l; i++) {
            var parts = cookies[i].split('=');
            var name = decode(parts.shift());
            var cookie = parts.join('=');

            if (key && key === name) {
                // If second argument (value) is a function it's a converter...
                result = read(cookie, value);
                break;
            }

            // Prevent storing a cookie that we couldn't decode.
            if (!key && (cookie = read(cookie)) !== undefined) {
                result[name] = cookie;
            }
        }

        return result;
    };

    config.defaults = {};

    $.removeCookie = function(key, options) {
        if ($.cookie(key) === undefined) {
            return false;
        }

        // Must not alter options, thus extending a fresh object...
        $.cookie(key, '', $.extend({},
        options, {
            expires: -1
        }));
        return ! $.cookie(key);
    };

}));

 

 

js部分：

function setCookie() {
    var username = $('#username').val();
    var password = $('#password').val();
    var aa = $("input[type='checkbox']").is(":checked"); //获取是否选中
    if (aa == true) { //如果选中-->记住密码登录
        $.cookie("username", username.trim(), 365); //有效时间7天，也可以设置为永久，把时间去掉就好
        $.cookie("password", password.trim(), 365);
    } else { //如果没选中-->不记住密码登录
        $.cookie("password", "");
        $.cookie("username", "");
    }
}

function getCookie() { //获取cookie
    var username = $.cookie("username"); //获取cookie中的用户名
    var pwd = $.cookie("password"); //获取cookie中的登陆密码
    if (pwd) { //密码存在的话把“记住用户名和密码”复选框勾选住
        $("[name='remember']").attr("checked", "true");
    }
    if (username != "") { //用户名存在的话把用户名填充到用户名文本框
        $("#username").val(username);
    } else {
        $("#username").val("");
    }
    if (pwd != "") { //密码存在的话把密码填充到密码文本框
        $("#password").val(pwd);
    } else {
        $("#password").val("");
    }
}


$(document).ready(function() {
    getCookie(); 
    $("#login").click(function() {
        var username = $('#username').val();
        var password = $('#password').val();
        var aa = $("input[type='checkbox']").is(":checked"); //获取选中状态
        if (aa == true) {
            setCookie(); //调用设置Cookie的方法
        } else if (aa == false) {
            setCookie(); //调用设置Cookie的方法
        }
    })
});

HTML代码：

<html>
 <head></head>
 <body>
  <form id="loginForm" role="form" action="${ctx}/login" method="post"> 
   <div class="form-content"> 
    <div class="form-group"> 
     <input type="text" id="username" name="username" class="form-control input-underline input-lg required" value="" placeholder="用户名" /> 
    </div> 
    <div class="form-group"> 
     <input type="password" id="password" name="password" value="" class="form-control input-underline input-lg required" placeholder="密码" /> 
    </div> 
    <label class="inline"> <input type="checkbox" id="remember" name="remember" class="ace" /> <span class="lbl"> 记住密码</span> </label> 
   </div> 
   <input id="login" type="submit" style="width: 20%" class="btn btn-white btn-outline btn-lg btn-rounded progress-login" value="登录" /> 
  </form> 
 </body>
</html>