调试易

#referer元素我应该怎么写呢？

回调函数访问不到页面元素了，你可以把 $('#referer').val()的值传进check_question函数

try:var check_question = function (e, f) {
    var hash = $("input[name=hash2]").val();
    var jurl=$('#referer').val();    if (e) {
        $.ajax({
                url: '/ajax/ckquestion.php',
                data: 'hash2=' + hash + '&username=' + encodeURI(e) + '&password=' + f,
                type: "POST",
                cache: false,
                dataType: "text",
                success: function (data) {
                    if (data == '1') {
                        $(".login_tip").html('参数错误').css({
                                color: '#ff0000'
                            });
                    } else if (data == '2') {
                        $(".login_tip").html('账号或者密码错误').css({
                                color: '#ff0000'
                            });
                    } else if (data == '3') {
                        safequestion(e, f, hash);
                    } else if (data == '4') {
                        $(".login_tip").html('账号或者密码错误').css({
                                color: '#ff0000'
                            });
                    } else if (data == '5') {
                        if ($('#referer').val() == '')
                            window.location.href = '/user/';
                        else
                            window.location.href = jurl;
                    } else if (data == '6') {
                        $(".login_tip").html('已经登录').css({
                                color: '#ff0000'
                            });
                    } else if (data == '0') {
                        $(".login_tip").html('提交错误').css({
                                color: '#ff0000'
                            });
                    } else if (data == '7') {
                        window.location.href = '/user/checkAccount/';
                    } else if (data == '8') {
                        $(".login_tip").html('error').css({
                                color: '#ff0000'
                            });
                    } else {
                        $(".login_tip").html('登录失败，请刷新后重新登录').css({
                                color: '#ff0000'
                            });
                    }
                }
            });
        return false;
    }