Create dynamic Word Cloud using d3.js

Thanks to Larks I was able to get it done. Here I am sharing the code if anyone else faces a similar issue, I hope it can help

<script>var fill = d3.scale.category20();  var data = [{word:"Hello",weight:20},{word:"World",weight:10},{word:"Normally",weight:25},{word:"You",weight:15},{word:"Want",weight:30},{word:"More",weight:12},{word:"Words",weight:8},{word:"But",weight:18},{word:"Who",weight:22},{word:"Cares",weight:27}];d3.layout.cloud().size([500, 500])      .words(data.map(function(d) {        return {text: d.word, size: d.weight};      }))      .padding(5)      .rotate(function() { return ~~(Math.random() * 2) * 90; })      .font("Impact")      .fontSize(function(d) { return d.size; })      .on("end", draw)      .start();  function draw(words) {      d3.select("body").append("svg")        .attr("width", 300)        .attr("height", 300)      .append("g")        .attr("transform", "translate(150,150)")      .selectAll("text")        .data(words)      .enter().append("text")        .style("font-size", function(d) { return d.size + "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.text; });  }  function drawUpdate(words){   d3.layout.cloud().size([500, 500])      .words(words)      .padding(5)      .rotate(function() { return ~~(Math.random() * 2) * 90; })      .font("Impact")      .fontSize(function(d) { return d.size; })      .start();      d3.select("svg")      .selectAll("g")        .attr("transform", "translate(150,150)")      .selectAll("text")        .data(words).enter().append("text")        .style("font-size", function(d) { return d.size + "px"; })        .style("font-family", "Impact")        .style("fill", function(d, i) { return fill(i); })        .attr("transform", function(d) {          return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";        })        .text(function(d) { return d.text; });  }  setInterval(function () {         var d_new = data;        d_new.push({word:randomWord(),weight:randomWeight()});         drawUpdate(d_new.map(function(d) {        return {text: d.word, size: d.weight};      }));      }, 1500);  function randomWord() {          var text = "";          var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";          for( var i=0; i < 5; i++ )              text += possible.charAt(Math.floor(Math.random() * possible.length));          return text;      }      function randomWeight(){        var r = Math.round(Math.random() * 100);        return r;      }</script>