react tabs

I am new to Reactjs. If the staus is active. I need to update the p tag and need to update in my liClass as .sports-last-second .sports-changed-status should be changed to .sports-last-second I have created a if condition but not sure how to insert. Can you guys tell how to do it. Providng my code below. newContentAdded: function () { var firstTab = 'got-the-value'; if (firstTab == 'got-the-value') { <p> got-the-value got-the-value got-the-value got-the-value </p> } } working fiddle [login to view URL] not working fiddle [login to view URL]