[perl] duda?

[Ing. Roberto Andrade]

Hola:

> At 15:04 27/01/1999 +0100, you wrote:
> >El codigo que solicitas es el siguiente ( supongo )
> >
> >   <form>
> >    <input type="button" value="Retroceder" onclick="history.back()">
> >   </form>
> 
> Alguien me podria indicar como decirle que vuelva a la pagina anterior
> donde tenia un formulario, pero lo que necesito es que me de los campos
> vacios , retroceder y hacer un reset de los campos 
> desde ya gracias

Tal vez esto es lo que necesitas, de perldoc CGI.pm:

----------------------------------------------------------------

 CREATING A TEXT FIELD


           print $query->textfield(-name=>'field_name',
                                   -default=>'starting value',
                                   -size=>50,
                                   -maxlength=>80);
               -or-

           print $query->textfield('field_name','starting value',50,80);

       textfield() will return a text input field.

       Parameters

       1.      The first parameter is the required name for the
               field (-name).

       2.      The optional second parameter is the default
               starting value for the field contents (-default).

       3.      The optional third parameter is the size of the
               field in
                     characters (-size).

       4.      The optional fourth parameter is the maximum
               number of characters the
                     field will accept (-maxlength).

               As with all these methods, the field will be
               initialized with its previous contents from
               earlier invocations of the script.  When the form
               is processed, the value of the text field can be
               retrieved with:

                      $value = $query->param('foo');


               If you want to reset it from its initial value
               after the script has been called once, you can do
               so like this:

                      $query->param('foo',"I'm taking over this value!");

               NEW AS OF VERSION 2.15: If you don't want the
               field to take on its previous value, you can force
               its current value by using the -override (alias
               -force) parameter:

                   print $query->textfield(-name=>'field_name',
                                           -default=>'starting value',
                                           -override=>1,
                                           -size=>50,
                                           -maxlength=>80);


------------------------------------------------------------

Saludos,

Roberto Andrade Fonseca

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