indexLabelFormatter: Function

A custom formatter function which returns the text to be displayed as indexLabel on dataPoints.

  • indexLabelFormatter overrides indexLabel property.
  • indexLabel & indexLabelFormatter on dataPoints override corresponding properties in dataSeries.

var  chart =  new  CanvasJS.Chart("container",
    dataPoint :[
       { x: 10, y : 12,  
                indexLabelFormatter: function (e) { return  e.dataPoint.y ; } 

  • By using indexLabelFormatter, you can return any value to be displayed as indexLabel.
    Below is the structure of object passed as parameter to the function
    e: { // parameter sent to function
           index,        // Available only in range charts
           total,        // Available only in stacked, pie and doughnut charts
           percent,      // Available only in stacked, pie and doughnut charts
  • index parameter is available only in case of range charts. It is undefined in case of other chart types.

Try it Yourself by Editing the Code below.

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