JavaScript does not work after you add new elements

Question

JavaScript does not work after you add new elements ? add more later, but I want you to work for elements how to track down a road I do not know Example;

$(".ui-draggable").draggable();    
$('body').append('<div class="ui-draggable"></div>');

Answer 1

Because .draggable() is not dynamic.

Do this:

$(".ui-draggable").draggable();    
$('body').append($('<div class="ui-draggable"></div>').draggable());

Your first line attaches only the elements which were present in the DOM.

It will not check for dynamically added ones.