D3 bar chart with animation

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forked from romsson's block: D3 bar chart without data-binding

forked from anonymous's block: D3 bar chart without data-binding

forked from romsson's block: D3 bar chart without data-binding

forked from romsson's block: D3 bar chart with animation

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    rect {
      fill: none;
      stroke: black;
      stroke-width: 1;
    }
  </style>
</head>

<body>
  <script>
    
    var n = 10;
    var w = 960;
    var h = 500;

var svg = d3.select("body").append("svg")
      .attr("width", w)
      .attr("height", h);

var data = d3.range(n).map(function() {
      return Math.random();
   });

setInterval(function(d) {

data = d3.range(data.length).map(function() {
        return Math.random();
      });

color2.domain([0, d3.max(data)])
						.range(["yellow", "green"])
      y.domain([0, 1])
    	 .range([0, 100]);
      
      svg.selectAll("rect").data(data).transition()
      	//.attr("duration", 1000)
      	//.attr("delay", function(d, i) { return i*1000;})
        .attr("height", function(d) { return y(d); })
        .attr("y", function(d) { return 200 - y(d); })
    		.style("fill", color2)

}, 500);
    
  </script>
</body>

https://d3js.org/d3.v4.min.js