Making the right regexp pattern in js

I'd like to implement this pattern on a regexp but I can't succeed making it work as I would like it to pattern:

var strInput = $("#inputFilter").val();
var pattern = new RegExp("(#[a-z0-9]{3,})|(@[a-zA-Z0-9]{6,16})|([a-zA-Z0-9]{6,16})(,((#[a-z0-9]{3,})|(@[a-zA-Z0-9]{6,16})|([a-zA-Z0-9]{6,16})))*");
var result = pattern.test(strInput);
if (!result)
{
    alert("Must follow this pattern, order is not relevant, e.g Title,#tag,@Username   or   Title,#tag,@Username,#tag2");
    return
}

---

should match:
#hello
helloWorld
@HelloUser
#hello,@HelloUser,HiWorld
@HelloUser,HiWorld,#hello1,#hello2

should NOT match:
#@hello
#hi
@Hello
@HelloUser#hello

thanks for help