List All Class Names Used on Page

list-html-classes

// Temporary code for Development
var elements = document.getElementsByTagName('*');
console.log('$$$$$ - Checked this many elements - ', elements.length);

var unique = function (list, x) {
    if (x != "" && list.indexOf(x) === -1) {
        list.push(x);
    }
    return list;
};

var trim = function (x) { return x.trim(); };

var classes = [].reduce.call(elements, function (acc, e) {
    return e.className.split(' ').map(trim).reduce(unique, acc);
}, []);

console.log('$$$$$ - The Classes are - ', classes);

list-html-classes_alternate

var classArray = [];
$('*').each(function(){if(this.className!=""){classArray.push(this.className)}})