d302

<!DOCTYPE html>
  <head>
    <meta charset="utf-8">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> 
 
   
    <style type="text/css" >
     div.bar{
        display: inline-block;
        width: 40px;
        height: 90px;
        background-color: teal;
        margin-right:2px;
        }
        div.bar2{
        display: inline-block;
        width: 40px;
        height: 90px;
        background-color: pink;
        margin-right:2px;
        }
       div.bar3{
        display: inline-block;
        width: 40px;
        height: 90px;
        background-color: blue;
        margin-right:2px;
        }
    </style>
    <style>
      body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
      svg { width: 100%; height: 100%; }
    </style>
  </head>

<body>
   
      <script type="text/javascript">
 
    var dataset = [5,10,15,20,25];
    
    d3.select("body").selectAll("div")
      .data(dataset)
      .enter()
      .append("div")
      .attr("class","bar")
      .style("height",function(d){
        return d*5+"px";
      });
      
    var dataset2 = [7,68,15,32,77,25,19,33,45,68];
      
    d3.select("body").selectAll("div.bar2")
      .data(dataset2)
      .enter()
      .append("div")
      .attr("class","bar2")
      .style("height",function(d){
        var barHeight=d*5;
        return barHeight+"px";
      });
      
    var dataset3 = [];
    for(var i=0; i<15; i++){
      var newNumber = Math.floor(Math.random()*100);
      dataset3.push(newNumber);
    }
      d3.select("body").selectAll("div.bar3")
      .data(dataset3)
      .enter()
      .append("div")
      .attr("class","bar3")
      .style("height",function(d){
        var barHeight=d*5;
        return barHeight+"px";
      })
      .style("background-color",function(d){
       if(d < 60){
          return"red";
        } else {
          return"black";
      }
      });
   
    
    </script>
  </body>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js