Customize Google Charts Gantt tooltip

Question

I've tried to customize the tooltip for the Gantt Google Chart and it does not seem to apply

I've added :

 data.addColumn({type: 'string', role: 'tooltip'});

and options

tooltip: {isHtml: true},
legend: 'none'

But it does not seem to work. Below it's a fiddle with the implementation as provided by Google and adapted by me as described above. Any idea why it does not work?

https://jsfiddle.net/uped4teh/1/

Answer 1

I'm working with the same chart and I have several problems... The Html tooltip feature is not available for google gantt chart, you can read about it in the section "Supported charts" in the link that I copy below...

https://developers.google.com/chart/interactive/docs/customizing_tooltip_content

Good Lucky

Let me know if my answer helped you