.click vs .on('click')
HTML
<p>
<div class="buttons">
<input type="button" class="alert" value="Alert" />
</div>
</p>
<p>
<input type="button" class="append" value="Append" />
</p>
JavaScript
var count = 0;
$(document).ready(function(){
$('.alert').click(function(){
count++;
alert(count);
});
$('.append').click(function(){
$('.buttons').append('<input type="button" class="alert" value="Alert" />');
});
});