做网站时手机端和PC电脑端判断代码

第一种，是玖佰网络的案例：
<script type="text/javascript">
function IsPC() {
    var userAgentInfo = navigator.userAgent;
    var Agents = ["Android", "iPhone",
                "SymbianOS", "Windows Phone",
                "iPad", "iPod"];
    var flag = true;
    for (var v = 0; v < Agents.length; v++) {
        if (userAgentInfo.indexOf(Agents[v]) > 0) {
            flag = false;
            break;
        }
    }
    return flag;
}
var currentUrl = window.location.href;
if(!IsPC())
{
//手机端对应的网页跳转
document.location.href = "http://wap.029900.com/";
}
</script>

第二种 ，是dede的判断方式<script type="text/javascript">if(window.location.toString().indexOf('pref=padindex') != -1){}else{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|Windows Phone|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)){window.location.href="{dede:global.cfg_mobileurl/}/view.php?aid={dede:field.id/}";}else if(/iPad/i.test(navigator.userAgent)){}else{}}catch(e){}}}}</script>
<script language="javascript" type="text/javascript" src="{dede:global.cfg_cmsurl/}/include/dedeajax2.js"></script>