The latest version of jQueryUI tooltip is not supporting HTML tags.
we can override the original functionality to start support HTML
Method 1 : overrides the default behavior
$(function () { $(document).tooltip({ content: function () { return $(this).prop('title'); } }); });
Method 2 : override the tooltip widget
$.widget("ui.tooltip", $.ui.tooltip, { options: { content: function () { return $(this).prop('title'); } } }); Example : http://jsfiddle.net/Aa5nK/14/