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How to create a simple bar chart using Chart.js | DzQ39 |

Below are some examples on how to create charts using Chart.js

For info. on how to obtain the latest Chart.js, please refer to the link below.
http://stackoverflow.com/documentation/chart.js/4274/getting-started-with-chart-js#t=201703251048525532779

Bar Chart Sample Code


Note, the code below uses the CDN version of Chart.js.

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<!DOCTYPE html>
<html>
  <head>
    <!-- For latest CDN version of Chart.js, visit https://cdnjs.com/libraries/Chart.js -->
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.bundle.js"></script>
  </head>

  <body>
    <canvas id="myChart" width="400" height="250"></canvas>

    <script>

      var canvas = document.getElementById('myChart');
      var data = {
          labels: ["January", "February", "March", "April", "May", "June", "July"],
          datasets: [
              {
                  label: "My First dataset",
                  backgroundColor: "rgba(255,99,132,0.2)",
                  borderColor: "rgba(255,99,132,1)",
                  borderWidth: 2,
                  hoverBackgroundColor: "rgba(255,99,132,0.4)",
                  hoverBorderColor: "rgba(255,99,132,1)",
                  data: [65, 59, 30, 81, 56, 55, 40],
              }
          ]
      };
    
      var option = {
              animation: {
         duration:5000
              },
              //responsive: false
      };

      var myBarChart = Chart.Bar(canvas,{
       data:data,
        options:option
      });
      
    </script>
  </body>
</html>

Result


Note that the size of the chart is beyond the width and height specified in <canvas id="myChart" width="400" height="250"></canvas>. The solution is to add responsive: false in the option field (see below pic).


Result

The chart is now responding to the width and height parameters.

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Below is another example.

Code

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<!DOCTYPE html>
<html>
<head>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.bundle.js"></script>
</head>

<body>
    <canvas id="myChart" width="400" height="200"></canvas>

    <script>
        var ctx = document.getElementById("myChart");
        var myChart = new Chart(ctx, {
                  type: 'bar',
                  data: {
                      labels: ["Group 1", "Group 2", "Group 3"],
                      datasets: [{
                          label: 'Groups',
                          data: [12, 19, 3]
                      }]
                  },
                  options: {
                    responsive: false
                  }
        });
    </script>

</body>
</html>

Result

References:

Chart.js

Creating Beautiful Charts with Chart.js
https://www.sitepoint.com/creating-beautiful-charts-chart-js/

An Introduction to Chart.js 2.0 — Six Simple Examples
https://www.sitepoint.com/introduction-chart-js-2-0-six-examples/

Getting started with chart.js
http://stackoverflow.com/documentation/chart.js/4274/getting-started-with-chart-js#t=201703251048525532779

CDNJS Version of Chart.js
https://cdnjs.com/libraries/Chart.js

c3.js

How to Create Website Graphs from CSV Files with c3.js and PapaParse
https://youtu.be/1OK4TJfCzdY
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