ページのステータスを保存するための Location.hash テクニック_JavaScript テクニック

(function() {
if (window.HashQuery) {
return;
}
window.HashQuery = function() {
};
HashQuery.prototype = {
parseFromLocation: function() {
if (location.hash === '' || location.hash.length === ) {
return;
}
var properties = location.hash.substr().split('|');
var index = ;
for (var p in this) {
if (!this.hasOwnProperty(p) || typeof this[p] != 'string') {
continue;
}
if (index < properties.length) {
this[p] = properties[index];
if (this[p] === '-') {
this[p] = '';
}
}
index++;
}
},
updateLocation: function() {
var properties = [];
for (var p in this) {
if (!this.hasOwnProperty(p) || typeof this[p] != 'string') {
continue;
}
var value = this[p];
properties.push(value === '' &#63; '-' : value);
}
var url = location.origin + location.pathname + location.search + "#" + properties.join('|');
location.replace(url);
}
};
})(); 

(function() {
window.TaskSearchHashQuery = function () {
HashQuery.constructor.call(this);
this.iterationId = '';
this.assignedUserId = '';
this.status = '';
this.keyword = '';
};
TaskSearchHashQuery.constructor = TaskSearchHashQuery;
TaskSearchHashQuery.prototype = new HashQuery();
})(); 

(function() {
var urls = {
list: "/app/task/list"
};
var hashQuery = null;
var pager = null;
$(document).ready(function () {
hashQuery = new TaskSearchHashQuery();
hashQuery.parseFromLocation();//在这里调用的哦，从location反序列化object
updateFormByHashQuery();
$("#btnSearch").click(function() {
updateHashQueryByForm();
hashQuery.updateLocation();//在这里调用的哦，将查询条件序列化之后更新到location.hash
$("#lblCount").html("加载中...");
pager.reload();
page.hideSearch();
});
pager = new ListPager("#listTasks", urls.list);
pager.getPostData = function(index) {
return "pageIndex=" + index + "&pageSize=" + "&projectId=" + page.projectId
+ "&iterationId=" + hashQuery.iterationId
+ "&assignedUserId=" + hashQuery.assignedUserId
+ "&status=" + hashQuery.status
+ "&keyword=" + hashQuery.keyword;
};
pager.onLoaded = function() {
$("#lblCount").html("共 " + $("#hfPagerTotalCount").val() + " 个任务");
$("#hfPagerTotalCount").remove();
};
pager.init();
});
function updateHashQueryByForm() {
hashQuery.iterationId = $("#ddlIterations").val();
hashQuery.assignedUserId = $("#ddlUsers").val();
hashQuery.status = $("#ddlStatuses").val();
hashQuery.keyword = $("#txtKeyword").val();
};
function updateFormByHashQuery() {
$("#ddlIterations").val(hashQuery.iterationId);
$("#ddlUsers").val(hashQuery.assignedUserId);
$("#ddlStatuses").val(hashQuery.status);
$("#txtKeyword").val(hashQuery.keyword);
};
})();