Update specific bar's background colour - Javascript Chart.js

Javascript examples for Chart.js:Bar Chart

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Description

Update specific bar's background colour

Demo Code

ResultView the demo in separate window 

<html lang="en">
   <head> 
      <title>Chart.js - Bar Chart with Different Colored Bars</title> 
   </head> 
   <body translate="no"> 
      <div style="width: 40%"> 
         <canvas id="canvas"></canvas> 
      </div> 
      <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> 
      <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js"></script> 
      <script>
      var chartColors = {/*from ww w  .java 2s.c o  m*/
  red: 'rgb(255, 99, 132)',
  orange: 'rgb(255, 159, 64)',
  yellow: 'rgb(255, 205, 86)',
  green: 'rgb(75, 192, 192)',
  blue: 'rgb(54, 162, 235)',
  purple: 'rgb(153, 102, 255)',
  grey: 'rgb(231,233,237)'
};
window.randomScalingFactor = function() {
  return (Math.random() > 0.5 ? 1.0 : 1.0) * Math.round(Math.random() * 100);
};
var ctx = document.getElementById("canvas").getContext("2d");
var myBar = new Chart(ctx, {
  type: 'bar',
  data: {
    labels: ["Car", "Bike", "Walking"],
    datasets: [{
      label: 'Fuel',
      backgroundColor: [
        chartColors.red,
        chartColors.blue,
        chartColors.yellow],
      data: [
        randomScalingFactor(),
        randomScalingFactor(),
        randomScalingFactor(),
      ]
    }]
  },
  options: {
    title: {
      display: true,
      text: "Chart.js - Different Bar Colors"
    },
    tooltips: {
      mode: 'index',
      intersect: false
    },
    legend: {
      display: false,
    },
    responsive: true,
  }
});
      //# sourceURL=pen.js
    
      </script>  
   </body>
</html>

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