function dispatch() { var q = document.getElementById("q"); if (q.value != "") { var url = 'http://www.google.com/search?q=site:v2ex.com/t%20' + q.value; if (navigator.userAgent.indexOf('iPad') > -1 || navigator.userAgent.indexOf('iPhone') > -1 || navigator.userAgent.indexOf('iPhone') > -1) { location.href = url; } else { window.open(url, "_blank"); } return false; } else { return false; } } if (navigator.userAgent.indexOf('iPad') > -1 || navigator.userAgent.indexOf('iPhone') > -1 || navigator.userAgent.indexOf('iPhone') > -1) //判断两次?