Sets the Border color of Index Labels in datapoint level. The value of indexLabelBorderColor can be a “HTML Color Name”, “hex code”, or “rgba values”.
Default: nullvar chart = new CanvasJS.Chart("container", { . . data: [{ dataPoints:[ { y: 10, indexLabelBorderColor: "red", indexLabelBorderThickness: 1 }, . . ] }] . . }); chart.render();