D3 Examples - IMDB Responding to Resize

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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Dynamic Size Example</title>
    <script src="https://d3js.org/d3.v4.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3-legend/2.24.0/d3-legend.min.js"></script>
    <style>
​
      /* Make the chart container fill the page using CSS. */
      #chart {
        position: fixed;
        left: 0px;
        right: 0px;
        top: 0px;
        bottom: 0px;
      }
    </style>
  </head>
  <body>
​
    <div id="chart"></div>
​
    <script>
​
      var chartDiv = document.getElementById("chart");
      var svg = d3.select(chartDiv).append("svg");
      const xValue = d => +d.Rating;
      const xLabel = 'Rating';
      const yValue = d => +d.Votes;
      const zValue=d=>+d.Runtime;
      const yLabel = 'Votes';
      const colorValue = d => d.Year;
      const colorLabel = 'Year';
      const margin = { left: 160, right: 200, top: 60, bottom: 80 };
       const g = svg.append('g')
          .attr('transform', `translate(${margin.left},${margin.top})`);
      const xAxisG = g.append('g');
      const yAxisG = g.append('g');
      const colorLegendG = g.append('g');
      const xScale = d3.scaleLinear();
      const yScale = d3.scaleLinear();
      const colorScale = d3.scaleOrdinal()
        .range(d3.schemeCategory10);
      
            var x_label = g.append('text')
                             .attr('class', 'axis-label');
      var y_label = g.append('text')
                             .attr('class', 'axis-label');
      
      var color_legend = colorLegendG.append('text')
                                                         .attr('class', 'legend-label')
      
​
      function redraw(){
​
        // Extract the width and height that was computed by CSS.
        var width = chartDiv.clientWidth;
        var height = chartDiv.clientHeight;
​
        // Use the extracted size to set the size of an SVG element.
        svg
          .attr("width", width)
          .attr("height", height);
​
        // Draw an X to show that the size is correct.
        
      
      const innerWidth = width - margin.left - margin.right;
      const innerHeight = height - margin.top - margin.bottom;
​
     
      
      xAxisG
          .attr('transform', `translate(0, ${innerHeight})`);
      
      
      colorLegendG
          .attr('transform', `translate(${innerWidth + 60}, 32)`);
      
​
      x_label
          .attr('class', 'axis-label')
          .attr('x', innerWidth / 2)
          .attr('y', innerHeight+40)
          .text(xLabel);
​
     y_label
          .attr('class', 'axis-label')
          .attr('x', -innerHeight / 2)
          .attr('y', -innerWidth/8)
          .attr('transform', `rotate(-90)`)
          .style('text-anchor', 'middle')
          .text(yLabel);
​
      color_legend
              .attr('x', 3)
              .attr('y', -20)
              .text(colorLabel);
​
      
      const xAxis = d3.axisBottom()
        .scale(xScale)
        .tickPadding(15)
        .tickSize(-innerHeight);
​
      const yAxis = d3.axisLeft()
        .scale(yScale)
        .ticks(15)
        .tickPadding(15)
        .tickSize(-innerWidth);
​
      const colorLegend = d3.legendColor()
        .scale(colorScale)
        .shape('square');
​
    
​
      d3.csv('data.csv', data => {
        xScale
          .domain(d3.extent(data, xValue))
          .range([0, innerWidth])
          .nice();
​
        yScale
          .domain(d3.extent(data, yValue))
          .range([innerHeight, 0])
          .nice();
        var circles = d3.select('g').selectAll('circle').data(data)
            
        circles.exit().remove();
            
​
        circles
              .enter().append('circle')
                    .attr('fill', d => colorScale(colorValue(d)))
                    .merge(circles)
                .attr('cx', d => xScale(xValue(d)))
                .attr('cy', d => yScale(yValue(d)))
            .attr('fill-opacity', 0.5)
            .attr('r', d => zValue(d)/15);
            
​
        xAxisG.call(xAxis);
        yAxisG.call(yAxis);
        colorLegendG.call(colorLegend)
          .selectAll('.cell text');
            
      })};
​
      // Draw for the first time to initialize.
      redraw();
​
      // Redraw based on the new size whenever the browser window is resized.
      window.addEventListener("resize", redraw);
​
    </script>
  </body>
</html>
​
    