jQuery - Callback failing if there is no options parameter
- by user249950
Hi, I'm attempting to build a simple plugin like this
(function($) {
$.fn.gpSlideOut = function(options, callback) {
// default options - these are used when no others are specified
$.fn.gpSlideOut.defaults = {
fadeToColour: "#ffffb3",
fadeToColourSpeed: 500,
slideUpSpeed: 400
};
// build main options before element iteration
var o = $.extend({}, $.fn.gpSlideOut.defaults, options);
this.each(function() {
$(this)
.animate({backgroundColor: o.fadeToColour},o.fadeToColourSpeed)
.slideUp(o.SlideUpSpeed, function(){
if (typeof callback == 'function') { // make sure the callback is a function
callback.call(this); // brings the scope to the callback
}
});
});
return this;
};
// invoke the function we just created passing it the jQuery object
})(jQuery);
The confusion I'm having is that normally on jQuery plugins you can call something like this:
$(this_moveable_item).gpSlideOut(function() {
// Do stuff
});
Without the options parameter, but it misses the callback if I do it like that so I have to always have
var options = {}
$(this_moveable_item).gpSlideOut(options, function() {
// Do stuff
});
Even if I only want to use the defaults.
Is there anyway to make sure the callback function is called whether or not the options parameter is there?
Cheers.
