I have come across several methods for handling click events in jquery:
bind:
$('#mydiv').bind('click', function() {
...
});
click:
$('#mydiv').click(function() {
...
}
on:
$('mydiv').on('click', function() {
...
}
Two questions:
UPDATE:
As eveyone has helpfully suggested, I should have read the docs better, and found out that I should use:
on() or click(),
which are effectively the same thing.
However, nobody has explained why bind is no longer recommended ? I'll probably get more downvotes for missing the obvious somewhere, but I can't find a reason for this in the documents.
UPDATE2:
'on' has the useful effect of being able to add event handlers to dynamically created elements. e.g.
$('body').on('click',".myclass",function() {
alert("Clicked On MyClass element");
});
This code adds a click handler to elements with a class of 'myClass'. However, if more myClass elements are then dynamically added later, they automatically get the click handler as well, without having to explicitly call 'on'. From what I understand people are saying, this is also more efficient (see Simons answer below).
From the documentation of bind
and click
:
bind :
As of jQuery 1.7, the .on() method is the preferred method for attaching event handlers to a document.
The source makes it clear there's no reason to use bind
, as this function only calls the more flexible on
function without even being shorter :
bind: function( types, data, fn ) {
return this.on( types, null, data, fn );
},
So I'd suggest, just like the jQuery team, to forget the old bind
function, which is now useless. It's only for compatibility with older code that it's still here.
click :
This method is a shortcut for .on('click', handler)
This shortcut is of course less powerful and flexible than the on
function and doesn't allow delegation but it lets you write a shorter and, arguably, slightly more readable, code when it applies. Opinions diverge on that point : some developers argue that it should be avoided as it is just a shortcut, and there's also the fact that you need to replace it with on
as soon as you use delegation, so why not directly use on
to be more consistent ?