jquery - 重新加载后隐藏

Question

I have this jquery code and every things working fine but after window.location.reload(true); I want to hide the div #cmd if possible

$(document).ready(function () {
    $("#add").click(
        function () {

            var id = $(this).attr("rel"); // ID
            var full_name = $("#full_name").val();
            var email = $("#email").val();
            var comments = $("#comments").val();
            var datapost = "id=" + id + "&full_name=" + full_name + "&email=" + email + "&comments=" + comments;

            $.ajax(
                {

                    type:"post",
                    url:"{/literal}{base_url()}{literal}post/add_cmd",
                    data:datapost,
                    success:function (Response) {
                        if (Response == 'added') {

                            alert("شكرا لك .. " + full_name + " على التعليق سوف يتم إداراج تعليقك بعد تحديث الصفحة");
                            window.location.reload(true);
                            $("#cmd").hide("Slow");

                        } else {
                            alert(Response);
                        }
// window.location.href = '../admcat/cats';
                    },
                    fail:function () {
                        alert("تعذر حذف الركورد لسوء الاتصال بالانترنت");
                    }
                }
            );


        }
    );


});

I want after window.location.reload(true); will hide the $("#cmd") if possible.

Answer 1

This is not so easy, because HTTP is a stateless protocol. That means, if you reload, the state of the page got lost.

But there's a way when you use JavaScript and PHP together.

1. Set a cookie on the first load
2. On the reload in PHP check existence of the cookie and set visibility of the #cmd div.

There are other ways. All these ways try to pass the state ("page already loaded once") to the next load.

1. Reload using a different method (first time GET, then POST)
2. Pass an URL parameter instead of just reloading
3. Use PHP session

All these four ways need PHP to check: Does the cookie exist, what's the HTTP method, what's the parameter, what's in the session?