<script type="text/javascript">

        var referrerPath = "@ViewBag.ReferrerPath";//这个是获取来源页的相对路径

        var localStorageKey = "search_history";

        $(document).ready(function () {

            //搜索时记录搜索关键字

            $("#imgSearch").click(function () {

                var keyword = $("#keyword").val();

                setSearchHistory(keyword);

                location.href = referrerPath + "?keyword=" + keyword;

            });

            //显示搜索记录

            showSearchHistory();

            //删除搜索记录

            $("#spanDelete").click(function () {

                localStorage.removeItem(localStorageKey);

                $(".history_search").html("");

            });

            function setSearchHistory(keyword) {

                var items = getSearchHistory();

                if (items.length > 100) {

                    alert("搜索记录太多，请先清空。");

                    return;

                }

                var item = { referrerPath, keyword};

                for (var i = 0; i < items.length; i++) {

                    if (items[i].referrerPath === item.referrerPath && items[i].keyword === item.keyword) {

                        return;

                    }

                }

                items.push(item);

                var strItems = JSON.stringify(items);

                localStorage.setItem(localStorageKey, strItems);

            }

            function getSearchHistory() {

                var strItems = localStorage.getItem(localStorageKey);

                var items = JSON.parse(strItems);

                if (items === null) {

                    items = [];

                }

                return items;

            }

            function showSearchHistory() {

                var arrProductSearchHistroy = new Array();

                $.each(getSearchHistory(), function (i, o) {

                    var url = o.referrerPath + "?keyword=" + o.keyword;

                    var item = "<li><a href=\""+url+"\">" + o.keyword + "</a></li>";

                    arrProductSearchHistroy.push(item);

                });

                $(".history_search").html(arrProductSearchHistroy.join(""));

            }

        });

    </script>