JScript branded quirks check in IE9

[VK]

Not to say these quirks are having any practical importance, but i)
named function expression namespace and ii) terminal elision treatment
are IE's JScript "branded" features since forever.

If anyone has IE9 installed could you tell the results for:

(function f() {
/* NOP */
})();

var arr = [0,1,];

// Should be undefined, IE<=8 gives function
window.alert('type of f: ' + typeof f);

// Should be 2, IE<=8 gives 3
window.alert('array length: ' + arr.length);

Just curious how IE "sticks to the traditions"

 

[RobG]

(function f() {
  /* NOP */
})();

var arr = [0,1,];

// Should be undefined, IE<=8 gives function
window.alert('type of f: ' + typeof f);

Here IE9 gives
type of f: undefined

With compatibility view on
type of f: function

// Should be 2, IE<=8 gives 3
window.alert('array length: ' + arr.length);

array length: 2

With compatibility view on
array length: 3

Wow, what happened at MS? They're getting serious about this standards
compliance thing - even implementing stuff from ES 5. Before you know
it, they'll be supporting canvas - oh wait, they've done that.