jQuery change class name

Question

I want to change the class of a td tag given the td tag's id:

<td id="td_id" class="change_me"> ... 

I want to be able to do this while inside the click event of some other dom object. How do I grab the td's id and change its class?

Answer 1

Using jQuery You can set the class (regardless of what it was) by using .attr(), like this:

$("#td_id").attr('class', 'newClass'); 

If you want to add a class, use .addclass() instead, like this:

$("#td_id").addClass('newClass'); 

Or a short way to swap classes using .toggleClass():

$("#td_id").toggleClass('change_me newClass'); 

Here's the full list of jQuery methods specifically for the class attribute.