Bootstrap Tooltip For Form Validation

I am fairly new to bootstrap and cant seem to get this right. I am using tooltip javascript functionality, on form validation, which popsup when there is validation errors in the i

Solution 1:

Change the event trigger to onkeyup:

<input class="span2" id="formName" rel="tooltip" data-placement="top" type="text"  placeHolder="" onkeyup="return validateName();" >