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Re: Values of statements

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  Re: Values of statements Gene Wirchenko <genew@telus.net> - 2017-02-06 09:16 -0800
    Re: Values of statements "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-02-06 23:35 +0100

#32499 — Re: Values of statements

On 4 Feb 2017 23:48:27 GMT, ram@zedat.fu-berlin.de (Stefan Ram) wrote:

>  In JavaScript, statements have values. For example, the
>  if statement has a value and thus it is very similar to
>  the ternary operator.
>
>const name = a =>
>{ "use strict";
>  return eval
>  ( "if( a === 0 )'Null'; else if( a === 1 )'Eins'; else 'Zwei';" ); }
>undefined
>
>name( 0 )
>"Null"
>
>name( 1 )
>"Eins"
>
>name( 2 )
>"Zwei"
>
>  But can something like the above be written without »eval«?
>  (I.e., can the value of an if statement be obtained without »eval«?)

     Replace the return with:

          if (a===0)
             return 'Null';
          else
             if (a===1)
                return 'Eins';
             else
                return 'Zwei';

Sincerely,

Gene Wirchenko

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#32520

Gene Wirchenko <genew@telus.net> wrote on 06 Feb 2017 in 
comp.lang.javascript:

> Replace the return with:
> 
>           if (a===0)
>              return 'Null';
>           else
>              if (a===1)
>                 return 'Eins';
>              else 
>                 return 'Zwei';
> 

If a can only be 0,1,2 try the better looking:

return ['Null','Eins','Zwei'][a];




-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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