How To Make Rectangle In Chart.js

I am trying to put rectangle to make a upper-lower range/level in chart.js, like in image Although I am able to make it by drawing two line in this example Please share your su

Solution 1:

There is already a Chart.js plugin exists called chartjs-plugin-annotation, by which you can achieve that much easily.

Using that plugin, you'll need to create a box annotation (rectangle), as such :

options: { //your chart options
   annotation: {
      annotations: [{
         type: 'box',
         drawTime: 'beforeDatasetsDraw',
         yScaleID: 'y-axis-0',
         yMin: 40,
         yMax: 50,
         backgroundColor: 'rgba(0, 255, 0, 0.1)'
      }]
   }
}

Here is a working fiddle.