Enter或者Ctrl+Enter登录

 
$(document).keydown(function(e){
        if(e.keyCode == 13) {
            // ctrl + enter is remember me
            if (e.ctrlKey) {
//                console.log(' pressed control key ');
                $('<input>').attr({
                    type: 'hidden',
                    name: '_spring_security_remember_me',
                    value: '1'
                }).appendTo('#form-login');
            }
            if($('#username').val() && $('#password').val() && $('#validCode').val()){
                $('#form-login').submit();
            }
        }
    });