任务一：表单（一）单个表单项的检验 https://bingyuea.github.io/baidu-ife/yaoyao/test1.html
任务二：表单（二）多个表单项的动态校验 https://bingyuea.github.io/baidu-ife/yaoyao/test2.html
任务三：表单（三）联动 https://bingyuea.github.io/baidu-ife/yaoyao/test3.html
任务四：听指令的小方块 https://bingyuea.github.io/baidu-ife/yaoyao/test4.html
任务六：UI组件之浮出层 https://bingyuea.github.io/baidu-ife/yaoyao/test6.html