The following code will trigger alert twice. Looks like empty() does  not remove events as promised.

Looks like remove works(see commented code).

Is it a Jquery bug? or it's only me.

<div id = 'cc'>

<div id="div1">

<button class="this2">button 2</button>

</div>

</div>

    <script>var c = $('#div1');

var cc=0;

c.on('click','.this2', function() { cc++; alert(cc);}); 

c.empty().off("*");

c.append('<button class="this2">button 2</button>');

c.on('click','.this2', function() { cc++; alert(cc);}); 

/*

c.remove();

c = $('<div id="div1"><button class="this2">button 2</button></div>');

$('#cc').append(c);

c.on('click','.this2', function() { cc++; alert(cc);});

*/</script>