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Next, you need to bind the two buttons to click events respectively:Explain the above figure. For the first point in the figure that does not consume down events, it is actually case 1 (default case). As can be seen from the log of case 1, when does not consume down events, subsequent events will no longer be distributed to the View, so branch 1 in the figure does not need to consider subsequent events for View.21世纪特种部队人员项少龙（古天乐 饰）决意要参加穿梭时空的研究，是为了要挽回自己的爱情。但由于时光机的数据出错，把少龙带到了战国时期。Functions are called in,, and phases. It is an important method to check attribute changes and optimize performance. The following figure excerpts some codes for handling event binding. The method has a value pointing to the last attribute, which is the current attribute value. Here is the event handling function that we bind to the component. If the binding event that is not used for air conditioning is empty, the event binding is logged off.1934年秋，因“左倾冒险主义的错误，第五次反“围剿”失败，党中央和红军主力被迫撤离。在保卫苏区战斗中负重伤的陈毅临危受命，协助中央分局书记项英就地抗击，迷惑敌人，掩护主力实行战略转移。项英为坚决执行中革军委的命令，没有采纳陈毅提出的改变组织方式和斗争方式，当陷入绝境，不得不改弦更张，派出张鼎丞、李乐天、陈丕显等去各地加强领导，经营游击根据地。在最危急的时刻，“遵义会议”改组后的党中央发来电文，要求中央分局坚持以游击战争为斗争方式，并让陈毅参与军分委领导。中央分局决定分路突围，但战机已失，部队大部被歼。此时蒋介石才明白中共战略转移的意图，在围追堵截中央红军的同时，为彻底扑灭这些留下的革命火种，调集大军，不惜代价，以十个拼一个的决心残酷清剿。但坚贞的共产党人从血泊中站起，收集残部，各自为战。