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Factory method modes are divided into the following three types:AbstractCalculator is an auxiliary class that provides auxiliary methods. Next, implement each of the following classes in turn:便叫停车，放书儿下去。By clicking the check box on the page, When selected, add an attribute isflag, Delete the attribute isflag when it is not checked, And then a delay of 2 seconds, After 2 seconds, re-judge the ID on the attribute of ISFLAG in all check boxes on the page and store it in an array. Then the proxy function calls the method of the ontology function to send all the ID delayed for 2 seconds to the ontology method at one time. The ontology method can obtain all the ID and send AJAX request to the server. In this way, the request pressure of the server is relatively reduced.Public interface Observer {当两对备受瞩目的夫妇被邀请参加一个独家的自助疗养会时，他们被迫审视成功的成本，在那里，他们的祖先几代人都在出售自己的灵魂。为了复仇，一名有着悲惨过去的神秘女子进入一个权势家族，后者不仅坐拥全球美妆帝国，还隐藏着黑暗的秘密。