sebastien-p/jquery.haseventlistener

hasEventListener is a jQuery plugin which checks if an Object or a DOM element actually has a particular/live/delegated event listener bound to it.

jquery.haseventlistener's Issues

!live and !delegate no longer function with jQuery 1.7

Viewing the example fiddle (http://jsfiddle.net/sebastienp/eHGqB/) and changing the jQuery version to 1.7+ will show those returning false.

HasEventListener will always return false in IE 7

HasEventListener will always return true do to a IE 7 bug in the get_valid_types_first_letter method. The bug is due to IE 7's short coming of not being able to index strings like arrays. So this line:

var first_try = (/Object|(Ele|Docu)ment|Window/.exec(Object.prototype.toString.call(object)) || [""])[0][0],

needs to be this line:

var first_try = (/Object|(Ele|Docu)ment|Window/.exec(Object.prototype.toString.call(object)) || [""])[0].charAt(0),

If you wanna support IE 7.

feature request - live events

Changed:
first_div = divs.eq(0).click(function (e) {

    window.alert(e.type);

}),

To:
first_div = divs.eq(0).live('click',function (e) {

    window.alert(e.type);

}),

In the JS fiddle, and it turned a 'true' to a 'false'

hasEventListner will not work in JQuery 1.8+ (possible fix for that)

Me again...

The reason for the break is that in JQuery 1.8+ they moved the $.data("events") to $._data('events") as to not mess with someones data-events tag.

I made a quick fix to this by adding a null colace in the get_events_data method on the return line to use
javascript $["_"+DATA](element, EVENTS) if javascript $[DATA](element, EVENTS) doesn't return anything.

compatibility.get_events_data = ($.now && !$.sub) ? function (element) { // 1.4.3 and 1.4.4

        // Workaround for '$({}).bind("event", handler).data("events"); // undefined' bug (on "window" too) !
        var element_type = get_valid_types_first_letter(element),
            data = $[DATA](element, ((element_type = (element_type === "W") || (element_type === "O"))) ? "__" + EVENTS + "__" : EVENTS);

        return ((data && element_type) ? (data || {})[EVENTS] : data);

    } : function (element) {

        return $[DATA](element, EVENTS) || $["_"+DATA](element, EVENTS);

    };

With this change the path we're using $("~selector").hasEventListner('event.namespace') works great.

Thanks,

Zack