由于使用jQuery处理DOM的问题而停留了一段时间，现在我收到一个错误，该错误是类的类在不应该出现的时候出现了。
/*
For this quiz, use a jQuery class selector and featuredArticle variable to toggle the 'featured' class!
*/
// don't change this variable!
var featuredArticle;
my anwser =>
featuredArticle = //$('.featuredArticle');
//featuredArticle.toggleClass('.featured')