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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.Command mode belongs to the behavior mode of an object. Command mode encapsulates a request or operation into an object, and separates the responsibility of issuing the command from the responsibility of executing the command through abstraction of the command. The implementation of command mode can provide the functions of revocation and recovery of commands. The specific structure diagram is shown below.　　金宗宽([桌子])执导[走在夜里]的短片围绕一对在梦中再次相遇的恋人展开。工长说着便要带头下跪。哈哈。严嵩自然从他刚来就知道了，但他不会轻易出现。This temporary home page is recommended to be placed in Github Pages or Netlife, which have large bandwidth and can cope with attacks. They also support binding domain names and can be automatically built from source code.