I got a problem while I was programming a game.

<div id="b0">
    <span id="b1">tralala</span>
</div>

$('#b1').click(function(){
    $('#b0').append( '<span id="b2">trololo</span>');
});
$('#b2').click(function(){
    $('#b0').html('');
});

There are no action when I click on b2.

How can I fix this ?

Thank you for your help