当所有td都有一个类时，如何将类添加到tr中?

I've been trying to create a buzzword bingo mainly using PHP. I add a specific class to the keywords from an array of 25 words that are found on a certain website. Now I just want to use jquery to style the row when all cells has that class but I can't figure out how, this is all I've got at the moment.I've been trying to create a buzzword bingo mai