废话不多说了，直接给大家贴代码了，代码写好不好，还请给位大侠多多指教。
.bar{width:px;height:px;border:px solid #ccc;border-radius:%;position:fixed;top:px;right:px;z-index:;cursor:pointer;}.menu{width:px;height:px;background-color:#ccc;position:absolute;transform:translated(-%,-%,);left:%;transition:all .s cubic-bezier(., ., ., .) s}#menu{top:%;}#menu{top:%;}#menu{top:%;}window.onload = function () {var menubar = document.getElementById("menubar");var menu = document.getElementById("menu");var menu = document.getElementById("menu");var menu = document.getElementById("menu");var i = ;menubar.onclick = function () {i++;if (i % == ) {menu.style.top = + "%";menu.style.display = "none";menu.style.top = + "%";menu.style.transform = "translated(-%,-%,) rotate(deg)";menu.style.transform = "translated(-%,-%,) rotate(deg)";}else {menu.style.transform = "translated(-%,-%,) rotate(deg)";menu.style.transform = "translated(-%,-%,) rotate(deg)";menu.style.top = + "%";menu.style.top = + "%";menu.style.display = "block";}}}
以上代码简单实现了动态按钮菜单特效，希望对大家有所帮助。