效果图: 代码如下: <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>原生js选项卡写法</title> <style> #div1 div{width: 200px;height: 200px;border: 1px solid #FF0000;display: none;} .active{background: red;} </style> [removed] [removed]=function()