practice-2

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    
    var width = 960;
    var height = 500;
    var svg = d3.select("body").append("svg")
      .attr("width", width)
      .attr("height", height);

var yScale = d3.scaleLinear()
    	.domain([1, 100])
    	.range([height - 40, 0]);
    
    var yAxis = d3.axisLeft()
    	.scale(yScale);
    
    var y = svg.append('g')
    	.attr('transform', 'translate (40, 20)')
    	.call(yAxis)
    
    var xScale = d3.scaleLinear()
    	.domain([0, 10])
    	.range([0, width - 400])
    
    var xAxis = d3.axisBottom()
    	.scale(xScale)
    
    debugger;
    svg.append('g')
    	.attr('transform', 'translate(' + 40 +','+ (height - 20) + ')')
    	.call(xAxis)
    
		var text = y.selectAll('text')
    	.attr('fill', function(d) { return d > 30 && d < 70 ? 'red' : 'blue'});
		console.log(text.data());

</script>
</body>

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