drawWordCloud( text_string );

function drawWordCloud(text_string){
  var common = "poop,i,me,my,myself,we,us,our,ours,ourselves,you,your,yours,yourself,yourselves,he,him,his,himself,she,her,hers,herself,it,its,itself,they,them,their,theirs,themselves,what,which,who,whom,whose,this,that,these,those,am,is,are,was,were,be,been,being,have,has,had,having,do,does,did,doing,will,would,should,can,could,ought,i'm,you're,he's,she's,it's,we're,they're,i've,you've,we've,they've,i'd,you'd,he'd,she'd,we'd,they'd,i'll,you'll,he'll,she'll,we'll,they'll,isn't,aren't,wasn't,weren't,hasn't,haven't,hadn't,doesn't,don't,didn't,won't,wouldn't,shan't,shouldn't,can't,cannot,couldn't,mustn't,let's,that's,who's,what's,here's,there's,when's,where's,why's,how's,a,an,the,and,but,if,or,because,as,until,while,of,at,by,for,with,about,against,between,into,through,during,before,after,above,below,to,from,up,upon,down,in,out,on,off,over,under,again,further,then,once,here,there,when,where,why,how,all,any,both,each,few,more,most,other,some,such,no,nor,not,only,own,same,so,than,too,very,say,says,said,shall";

  var word_count = {};

  var words = text_string.split(/[ '\-\(\)\*":;\[\]|{},.!?]+/);
    if (words.length == 1){
      word_count[words[0]] = 1;
    } else {
      words.forEach(function(word){
        var word = word.toLowerCase();
        if (word != "" && common.indexOf(word)==-1 && word.length>1){
          if (word_count[word]){
            word_count[word]++;
          } else {
            word_count[word] = 1;
          }
        }
      })
    }

  var svg_location = "#chart";
  var width = $(document).width();
  var height = $(document).height();

  var fill = d3.scale.category20();

  var word_entries = d3.entries(word_count);

  var xScale = d3.scale.linear()
     .domain([0, d3.max(word_entries, function(d) {
        return d.value;
      })
     ])
     .range([10,100]);

  d3.layout.cloud().size([width, height])
    .timeInterval(20)
    .words(word_entries)
    .fontSize(function(d) { return xScale(+d.value); })
    .text(function(d) { return d.key; })
    .rotate(function() { return ~~(Math.random() * 2) * 90; })
    .font("Impact")
    .on("end", draw)
    .start();

  function draw(words) {
    d3.select(svg_location).append("svg")
        .attr("width", width)
        .attr("height", height)
      .append("g")
        .attr("transform", "translate(" + [width >> 1, height >> 1] + ")")
      .selectAll("text")
        .data(words)
      .enter().append("text")
        .style("font-size", function(d) { return xScale(d.value) + "px"; })
        .style("font-family", "Impact")
        .style("fill", function(d, i) { return fill(i); })
        .attr("text-anchor", "middle")
        .attr("transform", function(d) {
          return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";
        })
        .text(function(d) { return d.key; });
  }

  d3.layout.cloud().stop();
}   </script>