设置网页地址栏小图标

<link rel="shortcut icon" href="XXXXX.ico" type="image/x-icon">显示在地址栏最前面的小图标

<link rel="apple-touch-icon" href="XXXX.ico" type="image/x-icon">支持iphone,ipad

<link rel="icon" href="XXXXX.png" type="image/png">