check url if(checkUrl('www.test.com')){ do something; }
function checkUrl(url) {
if (/^(http|https|ftp):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/i.test(url)) {
return true;
} else {
return false;
}
}