function goPAGE(){                               
if((navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i))) {
                    // window.location.href="移动端url";
                    alert("mobile")
                }
                else {
                    // window.location.href="pc端url"; 
                    alert("pc")
                }
            }
     goPAGE();        // 调用function

作者：kirinlau