library to dynamically include the Javascript
<script src="include.js"></script>
<script>
var incl = new includeJS();
incl.load('./js/testload.js')
.load('https://code.jquery.com/jquery-2.1.3.js',function(){
// Someting callback when include first augment Javascript file loaded.
})
.finish(function(){
// Execute on all files loaded.
});
</script>