JQuery .hasClass for multiple values in an if statement

Question

I have a simple if statement as such:

if ($(\'html\').hasClass(\'m320\')) {

// do stuff 

}

This works as expected. However, I want to add

Answer 1

var classes = $('html')[0].className;

if (classes.indexOf('m320') != -1 || classes.indexOf('m768') != -1) {
    //do something
}