How to format trackball tooltip text in JavaScirpt Chart?

By default, trackball displays the “x” value and “y” value of a point as tooltip text when you move the mouse over the Chart area. The “x” value in trackball tooltip text is formatted based on the labelFormat property of the Horizontal axis used by the series and the “y” value displayed in trackball tooltip text is formatted based on the labelFormat property of the Vertical axis used by the series.

JS

$("#container").ejChart({
    crosshair: {
        type: 'trackball',
        visible: true
    },
    primaryYAxis: {
        labelFormat: '${value} K'
    }
});

Screenshot:

The following screenshot displays trackball with formatted “y” value.

Figure 1: Trackball with formatted “y” value

JS Playground sample link: Trackball tooltip format

Conclusion

I hope you enjoyed learning about how to format trackball tooltip text in JavaScirpt Chart.

You can refer to our JavaScript Chart feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our example to understand how to create and manipulate data.

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