菜单过渡动画效果
【推荐阅读】微服务还能火多久？>>> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>二级菜单</title> <style type="text/css"> * { margin: 0; padding: 0; list-style-type: none; } a, img { border: 0; text-decoration: none; } body { font: 12px/180% Arial, Helvetica, sans-serif, "新宋体"; } </style> <link rel="stylesheet" type="text/css" href="css/sdmenu.css" /> <script type="text/javascript" src="js/tool.js"></script> <script type="text/javascript"> window.onload = function() { // 选择到类为 menuSpan 的对象 var menus = document.querySelectorAll(".menuSpan"); var divs = document.querySelectorAll("#my_menu div"); for