New to Kendo UI for jQueryStart a free 30-day trial

The border configuration options.

<div id="chart"></div>
<script>
$("#chart").kendoChart({
  series: [
    {
      tooltip: {
        visible: true,
        border: {
          width: 2,
          color: "green"
        }
      },
      data: [1, 2, 3]
    }
  ]
});
</script>

The color of the border.

Default: "black"

<div id="chart"></div>
<script>
$("#chart").kendoChart({
  series: [
    {
      tooltip: {
        visible: true,
        border: {
          width: 2,
          color: "green"
        }
      },
      data: [1, 2, 3]
    }
  ]
});
</script>

The width of the border in pixels. By default the border width is set to zero which means that the border will not appear.

Default: 0

<div id="chart"></div>
<script>
$("#chart").kendoChart({
  series: [
    {
      tooltip: {
        visible: true,
        border: {
          width: 2
        }
      },
      data: [1, 2, 3]
    }
  ]
});
</script>