Does it hurt in performance when I loop through list-items and add a clickhandler to all separate items?

The reason I do this is because I would only like to make the list item clickable if it contains an hyperlink.

The code I’m currenlty using is:

$  ('ul.paginator li').each(function() {
  if ($  ('a', this).length > 0) {
    $  (this).css('cursor', 'pointer');
    $  (this).click(function() {
      location.href = $  ('a', this).attr('href');
    });
  }
});

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There are objects where I have attached some events to.
After some point, I create some more of those items and I want them also to be attached to the same events.

If select elements using a jQuery selector and attach the handler to the event, the older object will have the same handler attached multiple times to their event.

What’s the proper way of doing this?

newest questions tagged jquery – Stack Overflow

I’m building some objects that will trigger custom events, and I’m using jQuery’s bind and trigger to manage this for me, like so:

function MyObject() {

    var _this = this;

    this.onUpdate = function(fn) {
        $  (_this).bind('MyObject.update', fn);
    };

    this.update = function(params) {
        //Do stuff...
        $  (_this).trigger('MyObject.update', [updatedID]);
    };

}

My problem is when I come to register other callback functions with onUpdate – the functions I pass in need to include the ‘event’ parameter for trigger to work correctly, like so:

function myCallback(event, updatedID) {
    //Do more stuff...
}

var myobject = new MyObject();
myobject.onUpdate(myCallback);

Is there a nice way I can wrap the function that I pass in to bind in the onUpdate method, so that myCallback doesn’t need the ‘event’ parameter, as it seems a bit irrelevant for my purposes?

newest questions tagged jquery – Stack Overflow