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1. Modify the original method to adapt. This violates the principle of "opening up to expansion and closing down to modification".First of all, there is a select selection box on the page, then there is an input box for the input purchase quantity, and there are also two display areas, namely, the display area for the selected color and the input quantity, and the next button operation.民国，察哈尔地区，张家口最大商号之一“鼎兆通”桀骜不驯的少东家秦天义，这一天正坐于日本商会大和洋行的会馆院中，当着日本商会会长渡边正雄的面，光明正大地击毙了两名杀害自家驼夫的日本浪人。从此一切便变得一发不可收拾，渡边正雄更加加紧了对察哈尔地区的秘密经济侵略行动。在与外侵势力斗争过程中，秦天义被冤入狱，屡次死里逃生。兄弟与爱人之间的情感纠葛，竟翻出了秦家的一个惊天秘密，也正因为此，兄弟之间反目成仇，日本人趁机一夜之间血洗秦家，秦天义决意复仇…在他发现了日本人在察哈尔地区的真正意图之后，他坚定了报此家仇的决心，作为一名中国人，他更加坚定了报此国恨的决心，誓死要把日本人赶出去！这是一场爱恨情仇纠缠不清的家族争斗，这是一出云谲波诡悬念迭起的复仇迷局，这是一曲感天动地的浩然正歌。义道，正义之道，忠义之道，情义之道，又为本剧主人公秦天义之道路之意。家人，兄弟，爱人以及脚下的这片土地。这是他们要去誓死保卫的东西。In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.MADHA是一个梵文术语，意思是“精神错乱拟人化”。《人皮疯人院》是一部以女性为中心的心理惊悚片，围绕着三流校对员妮莎展开。[News] On October 5, a post entitled "The Company's Female Employees Queue up Every Morning and Bosses Kiss One by One" was posted in the Iron and Blood Community. The article said: The Company is located in Majuqiao, Tongzhou, Beijing, and is a company selling home-brewed beer machines. More than half of the company is a female employee. In order to make the company's corporate culture unique and unite the hearts of the employees, the company stipulates that 9: 00 to 9: 30 every morning is a special time for the company team to build up feelings. Every day, female employees queue up to receive kisses from their bosses in turn. Subsequently, relevant videos and screenshots were widely circulated on the Internet, and media such as Dongfang Headline, Guangming Network and Yangguang Network forwarded them one after another.