dataVizBarChart/index.html at main · Arth-y/dataVizBarChart · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>D3 Bar Chart</title>
<script src="https://d3js.org/d3.v7.min.js"></script>
<style>
  body {
    font-family: Arial, sans-serif;
  }
  .bar {
    fill: steelblue;
  }
  .bar:hover {
    fill: brown;
  }
  #tooltip {
    position: absolute;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 8px;
    border-radius: 4px;
    pointer-events: none;
    opacity: 0;
  }
  text {
    font-size: 10px;
  }
</style>
</head>
<body>

<h1 id="title">United States GDP</h1>
<div id="tooltip"></div>

<script>
  const url = 'https://raw.githubusercontent.com/freeCodeCamp/ProjectReferenceData/master/GDP-data.json';

  fetch(url)
    .then(response => response.json())
    .then(data => {
      const dataset = data.data;
      const w = 800;
      const h = 400;
      const padding = 60;

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

      const xScale = d3.scaleTime()
                       .domain([new Date(dataset[0][0]), new Date(dataset[dataset.length-1][0])])
                       .range([padding, w - padding]);

      const yScale = d3.scaleLinear()
                       .domain([0, d3.max(dataset, d => d[1])])
                       .range([h - padding, padding]);

      const xAxis = d3.axisBottom(xScale);
      const yAxis = d3.axisLeft(yScale);

      svg.append('g')
         .attr('id', 'x-axis')
         .attr('transform', `translate(0, ${h - padding})`)
         .call(xAxis);

      svg.append('g')
         .attr('id', 'y-axis')
         .attr('transform', `translate(${padding},0)`)
         .call(yAxis);

      svg.selectAll('.bar')
         .data(dataset)
         .enter()
         .append('rect')
         .attr('class', 'bar')
         .attr('data-date', d => d[0])
         .attr('data-gdp', d => d[1])
         .attr('x', d => xScale(new Date(d[0])))
         .attr('y', d => yScale(d[1]))
         .attr('width', (w - 2*padding) / dataset.length)
         .attr('height', d => h - padding - yScale(d[1]))
         .on('mouseover', (event, d) => {
           const tooltip = d3.select('#tooltip');
           tooltip.style('opacity', 1)
                  .style('left', (event.pageX + 10) + 'px')
                  .style('top', (event.pageY - 25) + 'px')
                  .attr('data-date', d[0])
                  .html(`${d[0]}<br>$${d[1]} Billion`);
         })
         .on('mouseout', () => {
           d3.select('#tooltip').style('opacity', 0);
         });
    });
</script>
</body>
</html>