On Sep 25, 2009, at 4:07 PM, Charles Jolley wrote:
I would think the most useful test would be "is strict mode
available" not "am I currently strict" since you can assume the
later from the former but not the reverse.
Not sure how you can assume the latter from the former:
if (! function() { "use strict"; return this; }()) {
/* I'm in an ES5-supporting browser, but strict is not necessarily
enabled here */
}
Again strict is a static property of code, so if there were a "use
strict" above the if, even if there were functions nesting around the
if, so long as the global code or one of the surrounding functions had
a "use strict" pragma, we'd be in strict mode in the commented "then"
clause.
But if not, then the "use strict" in the lambda in the if's condition
doesn't cause any change to what follows the condition.
I suppose we could always just use browser sniffing. ;-)
The idioms are better but you have a point :-P.
/be
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