1.自我介绍,为什么选择前端2.写一道题把arr = [ [1, 2, 3, 4, 5], [6, 7, 8, 9, 10], [11, 12, 13, 14, 15], [16, 17, 18, 19, 20],]转换成arr = [1, 2, 3, 4, 5, 10, 15, 20, 19, 18, 17, 16, 11, 6, 7, 8, 9, 14, 13, 12];3.vue和react区别4.实习做了什么事,有什么成长