本文實例講述了JS實現黑色大氣的二級導航菜單效果。分享給大家供大家參考。具體如下：
這是一款自己做的不錯的二級導航菜單，黑色風格，是根據仿淘寶支付寶菜單而做的，自我感覺還算行吧。
運行效果截圖如下：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/js-black-style-2l-nav-menu-codes/
具體代碼如下：
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