var url = "https://avinashkonanki.com/";
var url_validate = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;
if(!url_validate.test(url)){
   alert('error');
}
else{
   alert('success');
}