I was expecting that assignment to a non writable property would
throw.
The fact that it does nothing *silently* is problematic IMO.
On 9 déc, 21:10, Lasse Reichstein <reichsteinatw...@gmail.com> wrote:
> On Fri, Dec 9, 2011 at 8:57 PM, Bruno Jouhier <bjouh...@gmail.com> wrote:
> > The following prints "item=function" on IE9!!
>
> > <html><body><script>
> > function foo() {
> > item = "hello";
> > alert("item=" + typeof item);
> > }
> > foo();
> > </script></body></html>
>
> > Of course, it is lacking a "var" before "item", but the result is
> > surprising.
>
> Not really. I'm guessing you're using IE. In IE the window object has
> an "item" property holding a function. It's not writable, so assigning
> to the property does nothing. Reading its type gives the expected
> "function"
> Other browsers (checked Firefox and Chrome) doesn't have the global
> "item" property, and alerts
> "item=string".
>
> > Also, I tried with "use strict"; at the beginning of foo but it did
> > not help!
>
> What did you expect adding "use strict" would do?
>
> /L
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