Best way to get the Original Target

Question

What's a jQuery like and/or best practices way of getting the original target of an event in jQuery (or in browser javascript in general).

I've been using something like this

$('body').bind('click', function(e){
        //depending on the browser, either srcElement or 
        //originalTarget will be populated with the first
        //element that intercepted the click before it bubbled up
        var originalElement = e.srcElement;
        if(!originalElement){originalElement=e.originalTarget;}                         
});

which works, but I'm not pleased with the two line feature sniffing. Is there a better way?

Solution 1

You can do it in one line with var originalElement = e.srcElement || e.originalTarget; but it ain't pretty JQuery-like ;-)

[Edit: But according to http://docs.jquery.com/Events/jQuery.Event#event.target event.target might do...]

Solution 2

I believe e.target is what you require

$('body').bind('click', function(e){
                e.target // the original target
                e.target.id // the id of the original target                                               
});

If you go to the jQuery in Action website and download the source code, take a look at

• Chapter 4 - dom.2.propagation.html

which deals with event propagation with bubble and capture handlers

Solution 3

Using event.originalTarget can cause "Permission denied to access property 'XYZ' from a non-chrome context" -error, so i'd recommend using following:

var target = event.target || event.srcElement || event.originalTarget;

event.target works on Firefox, Opera, Google Chrome and Safari.

Solution 4

In conjunction with How to detect a click outside an element? here is how you might trap a sub-widget with similar hide-when-clicked-outside functionality to prevent your own pop-over from hiding along with it; in this case, we are trapping the JQuery UI Datepicker pop-over widget:

// not using jquery .one handler for this, so we can persist outside click later
$('html').click(function(evt) {
    // just return if element has the datepicker as a parent
    if ($(evt.target).parents('#ui-datepicker-div').length>0) return;

    //toggle shut our widget pop-over
    $('#mywidget').toggle();

    // now, unbind this event since our widget is closed:
    $(this).unbind(evt);
});

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