indexLabelBackgroundColor: String

Sets the Background color of Index Labels. The value of indexLabelBackgroundColor can be a “HTML Color Name” or “hex” code.

Default: null
Example: “red”, “#FAC003” ..
Notes
  • Supported in all Chart Types.
var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
 data: [{
  dataPoints: [
   { x: 10, y: 10,  indexLabel: "label1", indexLabelBackgroundColor: "lightblue" },

   ],
  },

 ]
 .
 .
});
chart.render();
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2 Comments

  1. Sam says:

    Adding this property in my code throws this error:

    Uncaught TypeError: this.ctx.roundRect is not a functionG.render @ jquery.canvasjs.min.js:273
    w.renderIndexLabels @ jquery.canvasjs.min.js:133
    w.render @ jquery.canvasjs.min.js:88A
    a.Chart.render @ jquery.canvasjs.min.js:412

    It happens in both jquery and non-jquery version of canvasjs 1.7. All other indexLabel properties work, except this one. The errors is thrown at both dataPoint and dataSeries level. Can someone please assist?

    • Sam says:

      I guess i was able to resolve this myself. I debugged the non-minified source code and added this at line #2493 –

      “extendCtx(indexLabelCanvasCtx);”

      what this does is basically, add the “roundRect” function to the canvas context. And the background color started working for me.

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