On Oct 27, 2008, at 10:42 PM, kangax wrote:
>
>
>
> On Oct 27, 1:20 pm, Walter Lee Davis <[EMAIL PROTECTED]> wrote:
>> Is there a more "Prototype" way to construct a variable key within
>> JavaScript, similar to what you can do in PHP? For example, in
>> PHP, if
>> I had the string 'title' assigned to the variable $class, and I
>> wanted
>> the current value of the variable $titles, I could construct a
>> 'variable variable', which would point back to $titles:
>>
>> $titles = Array('Gone with the Wind','The Wind in the Willows','Break
>> like the Wind');
>>
>> $class = 'title'; //plain string
>>
>> $key = $class + 's'; //concatenate for poor man's pluralize
>>
>> echo ($$key == $titles) ? true: false; // => true
>>
>> In JavaScript, Google tells me that eval() will do the same thing,
>> but
>> I've heard over and over on this list that eval() is evil and to be
>> avoided. Any suggestions?
>
> Easy:
>
> var titles = [ 'Gone with the Wind', 'The Wind in the Willows', 'Break
> like the Wind' ];
> var klass = 'title'; //plain string
> var key = klass + 's'; //concatenate for poor man's pluralize
> window[key] === titles; // true
>
>>
I had tried window[key] before, and it didn't work, but your answer
(and another thread on this list) reminded me that I was inside an
anonymous function, so this[key] was the trick.
Thanks again,
Walter
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