Use `asset` helper function like below:

```
<script src="{{ asset('/assets/js/jquery-2.1.1.min.js') }}"></script>

```

will get

```
<script src="http://xxx.xxx.com/assets/js/jquery-2.1.1.min.js"></script>

```

Is there any laravel build-in solutions can let it be

```
<script src="//xxx.xxx.com/assets/js/jquery-2.1.1.min.js"></script>

```

and properly display with `http` and `https` protocols?

[EDIT]

I know that Laravel normally detects the protocol correctly, but when behind a load balancer, it does not. So I'm still looking for a solution to this.