The tooltip content can be loaded via AJAX.
<a href="#" class="easyui-tooltip" data-options="
content: $('<div></div>'),
onShow: function(){
$(this).tooltip('arrow').css('left', 20);
$(this).tooltip('tip').css('left', $(this).offset().left);
},
onUpdate: function(cc){
cc.panel({
width: 500,
height: 'auto',
border: false,
href: 'examples/tooltip/_content.html'
});
}
">Hove me</a> to display tooltip content via AJAX.