Description: Its very simple and just follow these steps.
1. Add reference of jQuery1.9 UI in the aspx page or master page in between <Script> tag
2. Set Title attribute to those html controls for whom you want to show tooltip.
3. Add following method to display tooltip for all control in the html page in between <Script> tag.
$(function () {
$(document).tooltip();
})
This method will display tooltip for all the controls in html page whose title attribute is set.
$(function () {
$('#'txtName).tooltip();
})
However if you want to display tooltip only for selected controls then instead of (doument) you will have to use id (#'txtname') eg of that specific controls.
4. Run your page in the browser to see the effect.
Example: