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From: "Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups: comp.lang.javascript
Subject: Re: JS Array problem
Date: Tue, 21 Oct 2014 13:12:25 +0200
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Mel Smith wrote:

> var a,b,c,d ;
> 
> var abcd = [a,b,c,d] ;
> 
> var somestr = "" ;
> 
> for (var i= 0; i<abcd.length; i++) {
>    somestr = i.toString() ;
>    // I wish to place the current value of somestr in each
>    // of the named but undefined objects/vrbls that are carried in the abcd 
> array
> 
>    // e.g.,
>    abcd[i] = somestr ;  // but this, of course, ruins everything :(
> 
>    // what is the correct statement please ?

As you only want *undefined* values to be replaced, you have to check
for that:

     if (typeof(abcd[i]) == "undefined") {
         abcd[i] = somestr;
     }

>    }

-- 
Christoph M. Becker