Triple equals? A typo?
No! Turns out that’s a real thing! And it’s awesome and hella useful to know about!
It’s a test for equality AND type congruence — for example:
1 == “1” is true, because they’re both equal to one, but
1 === “1” is false, because they’re not the same data type (one’s an integer, the other’s a string).
 from this code line:
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");