aggiungere/levare classi - come si richiama questo script?
Ciao a tutti...
ho trovato QUESTO SCRIPT che dovrebbe permettermi di aggiungere/levare classi agli elementi della pagina...
function HasClassName(objElement, strClass)
function AddClassName(objElement, strClass, blnMayAlreadyExist)
function RemoveClassName(objElement, strClass)
ma non so come richiamarlo onclick o altro...
ad esempio:
<a href="#" onclick="RemoveClassName(COSA_QUI??,'destra');">de stra</a>
cosa ci va al posto del MAISCOLO per far lavorare la funzione che segue e cancellare la classe DESTRA?
qualcuno ha due minuti per postarmi qualche riga di markup che mi faccia vedere il funzionamento dello script?
Grazie in anticipo e comunque...
:shock:
Codice HTML:
// ----------------------------------------------------------------------------
// HasClassName
//
// Description : returns boolean indicating whether the object has the class name
// built with the understanding that there may be multiple classes
//
// Arguments:
// objElement - element to manipulate
// strClass - class name to add
//
function HasClassName(objElement, strClass)
{
// if there is a class
if ( objElement.className )
{
// the classes are just a space separated list, so first get the list
var arrList = objElement.className.split(' ');
// get uppercase class for comparison purposes
var strClassUpper = strClass.toUpperCase();
// find all instances and remove them
for ( var i = 0; i < arrList.length; i++ )
{
// if class found
if ( arrList[i].toUpperCase() == strClassUpper )
{
// we found it
return true;
}
}
}
// if we got here then the class name is not there
return false;
}
//
// HasClassName
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// AddClassName
//
// Description : adds a class to the class attribute of a DOM element
// built with the understanding that there may be multiple classes
//
// Arguments:
// objElement - element to manipulate
// strClass - class name to add
//
function AddClassName(objElement, strClass, blnMayAlreadyExist)
{
// if there is a class
if ( objElement.className )
{
// the classes are just a space separated list, so first get the list
var arrList = objElement.className.split(' ');
// if the new class name may already exist in list
if ( blnMayAlreadyExist )
{
// get uppercase class for comparison purposes
var strClassUpper = strClass.toUpperCase();
// find all instances and remove them
for ( var i = 0; i < arrList.length; i++ )
{
// if class found
if ( arrList[i].toUpperCase() == strClassUpper )
{
// remove array item
arrList.splice(i, 1);
// decrement loop counter as we have adjusted the array's contents
i--;
}
}
}
// add the new class to end of list
arrList[arrList.length] = strClass;
// add the new class to beginning of list
//arrList.splice(0, 0, strClass);
// assign modified class name attribute
objElement.className = arrList.join(' ');
}
// if there was no class
else
{
// assign modified class name attribute
objElement.className = strClass;
}
}
//
// AddClassName
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// RemoveClassName
//
// Description : removes a class from the class attribute of a DOM element
// built with the understanding that there may be multiple classes
//
// Arguments:
// objElement - element to manipulate
// strClass - class name to remove
//
function RemoveClassName(objElement, strClass)
{
// if there is a class
if ( objElement.className )
{
// the classes are just a space separated list, so first get the list
var arrList = objElement.className.split(' ');
// get uppercase class for comparison purposes
var strClassUpper = strClass.toUpperCase();
// find all instances and remove them
for ( var i = 0; i < arrList.length; i++ )
{
// if class found
if ( arrList[i].toUpperCase() == strClassUpper )
{
// remove array item
arrList.splice(i, 1);
// decrement loop counter as we have adjusted the array's contents
i--;
}
}
// assign modified class name attribute
objElement.className = arrList.join(' ');
}
// if there was no class
// there is nothing to remove
}
//
// RemoveClassName
// ----------------------------------------------------------------------------
