Recuperando URL Base

$(document).ready(function(){
    // Metodo 1
    if( typeoff location.origin === 'undefined' ){
        location.origin = location.protocol + '//' + location.host
    }

    // Metodo 2
    if( !location.origin ){
        location.origin = location.protocol + '//' + location.host
    }

    // Metodo 3
    path = location.href.split('/');
    protocol = path[0];
    host = path[2];
    base = protocol + '//' + host;

});