I would like to share a modification to bindAsEventListener() that
might be useful to some of you. It makes it possible to do
function show(event, number) {
alert(Event.element(event).id + " = " + number);
}
Event.observe("el1", "click", show.bindAsEventListener(this, 5);
Event.observe("el2", "click", show.bindAsEventListener(this, 10);
That will alert "el1 = 5" when el1 is clicked and "el1 = 10" when el2
is clicked.
The changed function:
Function.prototype.bindAsEventListener = function(object) {
var __method = this;
var argumente = $A(arguments);
argumente.shift(); // remove "object" from the list => just the
additional arguments remain
return function(event) {
var ar = argumente.slice(0); // copy values
ar.unshift(event || window.event);
return __method.apply(object, ar);
}
}
Bye,
Martin
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