Requirejs with localstorage caching

index.js

(function(w,d){
  var DATA_MAIN='assets/js/login';
	sc = d.createElement('script'), head = d.getElementsByTagName('head')[0];
    sc.setAttribute('data-main', DATA_MAIN );
    sc.setAttribute('async', 'true');
    if( !'localStorage' in w || !w.localStorage.getItem('requirejs')){
      sc.src="assets/js/require.min.js"
    } else {
      sc.innerHTML=localStorage.getItem('requirejs');
    }
    head.appendChild(sc);
}(window,document));

index.min.js

// need to set `s` variable to point to right target file
!function(e,t){var s="assets/js/login";sc=t.createElement("script"),head=t.getElementsByTagName("head")[0],sc.setAttribute("data-main",s),sc.setAttribute("async","true"),!1 in e||!e.localStorage.getItem("requirejs")?sc.src="assets/js/require.min.js":sc.innerHTML=localStorage.getItem("requirejs"),head.appendChild(sc)}(window,document);