Search between an HTML document's body tags and find the most common words

common_words.js

$(function() {
		alert("DOM loaded");
    parseHTML();
});

function parseHTML() {
   var words = {};
   var conent = "";
   content = $('body').html();
   alert(content);
   content = content.replace(/(?:\r\n|\r|\n)/g, ' ');
   content = content.replace(/</g, " <");
   content = content.replace(/>/g, "> ");
      alert(content);

   divided = content.split(" ");
   
   alert(divided.toString());
   
   hash = {};
   
   divided.forEach(function(element) {
   	if(hash[element] != undefined)
    {
    	hash[element] += 1;
    } else if(element.match(/[^A-Za-z0-9\-_]/) || element == '') {
    	console.log("skip");
    } else {
    	hash[element] = 1;
    }
   });

  var items = Object.keys(hash).map(function(key) {
      return [key, hash[key]];
  });

  items.sort(function(first, second) {
      return second[1] - first[1];
  });

  console.log(items.slice(0, 100));
 }