how do I find a particular class of the closest element?

Question

I'm trying to find a particular class match from a closest element

     $(this).closest("tr"); 

I need to find out if this tr has a class name testlog3 from the point.

Answer 1

Use hasClass:

if($(this).closest('tr').hasClass('testlog3')) {
    // ...

Answer 2

You can use the closest function as follows:

$(this).closest('tr.testlog3');