viernes, 1 de octubre de 2010

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Desplegar parcialmente una tabla – Platform – Hosting – Donate

Como siempre, seguro que hay otra manera de hacer esto, pero la que se presenta aquí es la única que se me ha ocurrido para contestar a JAIME. La cosa consiste en tener una tabla oculta parcialmente y poder desplegar esa parte pulsando un botón.

El problema reside en introducir unID unívoco en parte de la tabla, para poder luego ocultar o desplegar esa parte mediante un script. Todo esto sin fastidiarel código que forma la tabla y que requiere de todos suTR,TD y sus cierres, en perfecto orden y sin interferencias de otros códigos.

La chapucilla que se me ha ocurrido en esta ocasión es construirdos tablas, presentarlas juntas como si fueran una y meter toda la que quedará inicialmente oculta en unDIV que sí podrá llevar unaID sin problemas.

Para empezar contruimos el script que hace que podamos ocultar cosas mediante una clase determinada. A través de su ID se podrá cambiar la clase para que se muestre/oculte. Como es habitual, todo esto irá antes de/head

style type="text/css"
.ver {display:block;}
.nover {display:none;}
/style
script type="text/JavaScript"
function vernover(identificacion){
var menu = document.getElementById(identificacion);
if(menu.className == 'ver'){
menu.className = 'nover';
} else {
menu.className = 'ver';
}
}
/script


Actualización: Lo anterior sería el código para colocar en un POST, no en la plantilla. Para que este código lo admita Blogger en la susodicha, tendreis que cambiar las comillas dobles (") por simples (') y las simples por ".

A continuación construimos nuestras tablas dónde se quieran poner, con el procedimiento habitual:

table class="ejemplo"tbody
trtdCONTENIDO/tdtdCONTENIDO/tdtdCONTENIDO/td/tr
trtdCONTENIDO/tdtdCONTENIDO/tdtdCONTENIDO/td/tr
/tbody/table

div id="tablainferior" class="nover"
table class="ejemplo"tbody
trtdCONTENIDO/tdtdCONTENIDO/tdtdCONTENIDO/td/tr
trtdCONTENIDO/tdtdCONTENIDO/tdtdCONTENIDO/td/tr
trtdCONTENIDO/tdtdCONTENIDO/tdtdCONTENIDO/td/tr
trtdCONTENIDO/tdtdCONTENIDO/tdtdCONTENIDO/td/tr
/tbody/table
/div

Redactando el código uno a continuación del otro, las dos tablas aparecerán como una sola. A la segunda le hemos añadido mediante unDIV, unID que en el ejemplo establainferior y este mismo identificador será el que utilicemos en el botón, mediante una llamada al JavaScript que hemos visto en primer lugar (vernover):

a href="javascript:vernover('tablainferior');"Plegar/Desplegar/a parte inferior tabla


Plegar/Desplegar parte inferior tabla 1

CONTENIDOCONTENIDOCONTENIDO
CONTENIDOCONTENIDOCONTENIDO
CONTENIDOCONTENIDOCONTENIDO
CONTENIDOCONTENIDOCONTENIDO
CONTENIDOCONTENIDOCONTENIDO
CONTENIDOCONTENIDOCONTENIDO

Para formatear la tabla anterior, hemos utilizado el siguiente CSS:

table.ejemplo {
width:300px;
margin:0px auto;
text-align:center;
}
table.ejemplo tbody tr td {
margin:5px;
padding:5px;
border:1px solid #000000;
background:#cccccc;
}

También podríamos hacer lo mismo con alguna librería de efectos. Por ejemplo conscriptaculous:


Plegar/Desplegar parte inferior tabla 2

CONTENIDOCONTENIDOCONTENIDO
CONTENIDOCONTENIDOCONTENIDO

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