判断浏览器来自移动端或PC

<script type="text/javascript">
        if (/AppleWebKit.*Mobile/i.test(navigator.userAgent)
            || (/MIDP|SymbianOS|NOKIA|SAMSUNG|LG|NEC|TCL|Alcatel|BIRD|DBTEL|Dopod|PHILIPS|HAIER|LENOVO|MOT-|Nokia|SonyEricsson|SIE-|Amoi|ZTE/.test(navigator.userAgent))) {
        if (window.location.href.indexOf("?mobile") < 0) {
            try {
                if (/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)) {
                    alert("移动：Android|webOS|iPhone|iPod|BlackBerry");
                } else if (/iPad/i.test(navigator.userAgent)) {
                    alert("移动：iPad");
                } else {
                    alert("移动：其它");
                }
            } catch (e) {
            }
        }
    }
    else {
        alert("PC");
    }
    </script>