I'm so used to => in PHP used as associated array assignment
Whereas my having spent a decade and a half working in Wirth family languages like Pascal, Modula, and ADA, I'm used to => and >= being the EXACT SAME THING.
Of course, since I mostly use JS on the client side only I can't even use arrow functions since again, just including them in your source makes IE flat out refuse to even run ANY of your scripts. It won't even load.
... but then I have clients who pay extra for IE5.5 support just because they don't have the scratch to migrate away from their Windows CE based Geode and S3 Samurai powered thin clients; nor do they want the security risk of not running the OS out of ROM.
Ever see IE 5.x be rock solid secure? It's simple, neuter the ability to let pages or users install their own activeX controls, and run the entire OS and browser out of ROM where the code can't be modified.
Unfortunately it also means those devices can NEVER be upgraded to a newer browser... well, unless someone wanted to build a new CE distro just to the hardware.