Ah, yes, I meant reference error.
I just realized maybe my mental model is wrong:
Is it correct that this is the scope chain for a "for" loop?
top scope
for condition scope
for statement scope
Statement can reference variables defined in condition, but not the other way
around?
> On Apr 17, 2015, at 11:15 PM, Caitlin Potter <[email protected]> wrote:
>
> er, to add to that, “a” shouldn’t be undefined during the while condition,
> this should throw — it’s a reference error
>
>
>> On Apr 17, 2015, at 11:10 AM, Caitlin Potter <[email protected]> wrote:
>>
>> Is there a language where lexically scoped variables declared in a block are
>> accessible outside of that block? Java, C, C#, rust, Python, etc, will not
>> let you do this. I’m not sure this is a gotcha for most software developers
>>
>>> On Apr 17, 2015, at 10:57 AM, Glen Huang <[email protected]> wrote:
>>>
>>> ```js
>>> do {
>>> let a = 1;
>>> } while (a);
>>> ```
>>> is "a" undefined in the while condition? This seems like a gotcha.
>>>
>>>
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>>> https://mail.mozilla.org/listinfo/es-discuss
>>
>
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