prototype timeline

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>D3 Demo: Making a bar chart with SVG</title>
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>
		<style type="text/css">
			/* No style rules here yet */		
		</style>
	</head>
	<body>
		<script type="text/javascript">

//Width and height
			var w = 500;
			var h = 208;
			var barPad = 1;
      var hs = 15;
			
			var dataset = [ 5, 10, 13, 19, 21, 25, 22, 18, 15, 13,
							11, 12, 15, 20, 18, 17, 16, 18, 23, 25 ];
			
			//Create SVG element
			var svg = d3.select("body")
						.append("svg")
						.attr("width", w)
						.attr("height", h);

//ATTEMPT TO ADD INFO/Profile Background
		 	svg.append("rect")
         .attr("x", 0)
         .attr("y", 0)
         .attr("height", h)
         .attr("width", w)
         .attr("fill", "wheat");
      
      //ADD in Heatstrip
			svg.selectAll("rect")
			   .data(dataset)
			   .enter()
			   .append("rect")
			   .attr("x", function(d, i) 
               {return i * (w / dataset.length);})
			   .attr("y", h-hs-(4*barPad))
			   .attr("width", w / dataset.length - barPad)
			   .attr("height", hs)
      	 .attr("fill", function(d){return "rgb(0,"+(d*10)+",0)";});
      
      //ADD SECOND STRIP
      svg.append("rect")
          .attr("x", function(d, i) 
               {return i * (w / dataset.length);})
			   .attr("y", h-(3*hs)-(6*barPad))
			   .attr("width", w-(barPad))
			   .attr("height", 2*hs)
      	 .attr("fill", "lightgrey");
       
      //ADDING TEXT
      svg.selectAll("text")
			   .data(dataset)
			   .enter()
			   .append("text")
			   .text(function(d) {
			   		return d;
			   })
			   .attr("text-anchor", "middle")
			   .attr("x", function(d, i) 
               {return (i+1.5) * (w / dataset.length);})
			   .attr("y", h-(6*barPad))
			   .attr("font-family", "sans-serif")
			   .attr("font-size", "11px")
			   .attr("fill", "white");
  
      
		</script>
	</body>
</html>

https://d3js.org/d3.v3.min.js