Bookmarklet to estimate reading time of a page

beautified.js

javascript:(function () {
    function getTextNodesIn(element) {
        var wordcount = 0,
            whitespace = /^\s*$/;

        function getTextNode(node) {
            // type 3 is a textnode
            if (node.nodeType == 3) {
                // We skip text nodes that are only whitespace
                if (!whitespace.test(node.nodeValue)) {
                    wordcount += node.nodeValue.split(" ").length;
                }
            // this isn't a text node, so test each childnode
            } else {
                for (var i = 0, len = node.childNodes.length; i < len; ++i) {
                    getTextNode(node.childNodes[i]);
                }
            }
        }
      
        getTextNode(element);
        return wordcount;
    }
  	
    alert("Estimated reading time: " + (getTextNodesIn(document.body) / 250) + " minutes")
}());

minified.js

javascript:(function(){function getTextNodesIn(c){var d=0,b=/^\s*$/;function a(g){if(g.nodeType==3){if(!b.test(g.nodeValue)){d+=g.nodeValue.split(" ").length}}else{for(var f=0,e=g.childNodes.length;f<e;++f){a(g.childNodes[f])}}}a(c);return d}alert("Estimated reading time: "+(getTextNodesIn(document.body)/250)+" minutes")}());

no-recursion.js

javascript:(function () {
  function getTextNodesIn(element) {
      var wordcount = 0,
          whitespace = /^\s*$/,
          nodelist = [element];
      
      while (nodelist.length > 0) {
          var node = nodelist.pop();
          if (node.nodeType == 3) {
              // We skip text nodes that are only whitespace
              if (!whitespace.test(node.nodeValue)) {
                  wordcount += node.nodeValue.split(" ").length;
              }
              // this isn't a text node, so test each childnode
          } else {
              for (var i = 0, len = node.childNodes.length; i < len; ++i) {
                  nodelist.push(node.childNodes[i]);
              }
          }
      }
   
      return wordcount;
  }
    	
  alert("Estimated reading time: " + (getTextNodesIn(document.body) / 250) + " minutes");
}());

Finds all text nodes, splits them into words, counts total words across them, divides by 250 (between 200 and 250 wpm is the average adult reading speed)

YAY

Dodgy benchmark comparing the recursive against the non-recursive here: http://jsfiddle.net/HDeT2/1/

Thanks for this -- mind if I use this code in another project to be put on GitHub?