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Let's understand such a problem first, If our front-end development needs are the needs given to us by the demand side, It is possible that a front-end developer will deal with multiple demanders, Therefore, it will keep in touch with multiple demand parties. Then in the program it means keeping references to multiple objects, The larger the program, There will be more and more objects, The relationship between them will become more and more complicated. Now if there is an intermediary (if it is our supervisor) to meet the needs of multiple demanders, Then the demander only needs to give all the requirements to our supervisor, who will assign tasks to us according to our workload in turn. In this way, our front-end development does not need to contact with multiple business parties, we only need to contact our supervisor (i.e. Intermediary), which weakens the coupling between objects.Chapter 2通过田小姐在纽约一年半的留学经历，从一个枕头和一个箱子开始，独自打拼，到在纽约游刃有余，小有成绩的一段人生经历，传达“独立女性”的价值观。　　一位近乎植物人的特殊病人，在叶明辉院长的亲自接护下住进了医院，此人叫傅洪波，是叶明辉院长早年一起插队的老同学，也是阳光医院里阳光基金的创始人。叶明辉宣布，这个病人的医治由韩子航负责，韩子航希望和司马博铭联手医治这位病人。罗龙文求见的时候，他泪迹未干。Finally, we initialize the proxy object ProxyObj; Just call the method of sending flowers (sendGift) of the ProxyObj object.Users' needs in content consumption can be roughly divided into four categories: reading information, learning knowledge, consumption decisions and time consumption.