function loader (css, js) {
// (A) TOTAL NUMBER OF SCRIPTS
var total = css.length + js.length,
now = 0, s;
// (B) READY?
var ready = () => {
now++;
// if (now==total) { document.getElementById("loading").remove(); }
// FOR THIS DEMO ONLY.
// PAGE LOAD IS SO FAST YOU WON'T EVEN SEE THE SPINNER.
// SO WE DELAY IT BY 2 SECONDS.
if (now==total) {
window.setTimeout(()=>{
document.getElementById("loading").remove();
}, 2000);
}
};
// (C) INSERT INTO
css.forEach((url, i) => {
s = document.createElement("link");
s.rel = "stylesheet";
s.href = url;
s.onload = ready; s.onerror = ready;
document.head.appendChild(s);
});
// (D) INSERT