Setters using VBS and constant hacks

I wasn't gonna blog this because I couldn't be bothered but Mario asked me if I had it documented anywhere and I guess it's nice to have it somewhere. So I was looking to create setters in legacy browsers like IE7 and it would be nice to use them on custom objects in IE8. I came up with the following VBS hack:-

execScript("Class c\nProperty Let x(y)\nalert(y)\nEnd Property\nEnd Class\nSet obj=new c","VBScript");obj.x=1;//yeah js calls vbs ;)

Pretty cool calling VBS from JS then using a VBS object inside JS :)

Ok and now some constant stuff I tweeted before but I quite like so I'll post here too. Constants are weird in JavaScript, when you think about them you think in a value that cannot change but when it comes to objects they can't be constants for some reason. I dunno why they could be implemented quite easily by creating a Getter only object but anyway:-

//example1
const x={};x.y=123;alert(x.y)//Objects aren't constants!

//example2 (need to run separately of course
const x={};x.toString=x.valueOf=function() { return 1; };alert(x)

Finally I'll leave you with a quiz, what is "x" equal to without running?:-

var x=1; function y() { x=3; alert(x); return; const x=2;}y()// x == ?