What's the role of the parentheses in the following piece of code?
- by Emanuil
This is the tracking code for Google Analytics:
var _gaq = _gaq || [];
_gaq.push(["_setAccount", "UA-256257-21"]);
_gaq.push(["_trackPageview"]);
(function() {
var ga = document.createElement("script"); ga.type = "text/javascript"; ga.async = true;
ga.src = ("https:" == document.location.protocol ? "https://ssl" : "http://www") + ".google-analytics.com/ga.js";
var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(ga, s);
})();
You can see that the function is inside parentheses.
Why do you think is that?
