<div class="example" id="alsoanexample">Inspect the Console! Write click and inspect element</div>
<script>
	(function (){
    var all = document.getElementsByTagName("*");
    var ids = [];
    var classes = [];
    for (var i=0, max=all.length; i < max; i++) {
        var elem = all[i];
         if(elem.id) {
            ids.push(elem.id);
         }
         if(elem.className) {
            var classList = elem.className.split(" ");
            Array.prototype.push.apply(classes, classList);
         }
    }
    console.log("Ids:");
    ids.forEach(function(e){
        console.log(e);
    });
    console.log("\nClasses:");
    classes.forEach(function(e){
        console.log(e);
    });
		var divs = document.getElementsByTagName("div");
		console.log("\nDivs:")
		for(var i = 0; i < divs.length; i++){
		   //do something to each div like
		   console.log(divs[i]);
		}
})();
</script>