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

Here is a slight variation on answer offered by jfriend00:

$.fn.hasAnyClass = function() {
    var classes = arguments[0].split(" ");
    for (var i = 0; i < classes.length; i++) {
        if (this.hasClass(classes[i])) {
            return true;
        }
    }
    return false;
}

Allows use of same syntax as .addClass() and .removeClass(). e.g., .hasAnyClass('m320 m768') Needs bulletproofing, of course, as it assumes at least one argument.