html 0 1 2 3 4 css .boxdiv{ width: 100px; height: 100px; color: #fff; text-align: center; margin-bottom: 10px;} js var arr=[".no0",".no1",".no2",".no3",".no4"];$(arr[0]).show().siblings().hide()
0 1 2 3 4css
.box>div{ width: 100px; height: 100px; color: #fff; text-align: center; margin-bottom: 10px; }js
var arr=[".no0",".no1",".no2",".no3",".no4"]; $(arr[0]).show().siblings().hide()