Labels are used to indicate what a certain position on the axis means.. Index Labels can be used to display additional information about a dataPoint. Can index also move the stock? The thing is that on each hover or click on the graph, it looks like that animation is starting again, even though it is not visible, but the labels disappears for duration of animation and then they're visible again. To learn more, see our tips on writing great answers. Hover Labels¶ One of the most deceptively-powerful features of interactive visualization using Plotly is the ability for the user to reveal more information about a data point by moving their mouse cursor over the point and having a hover label appear. ChartJS with ChartJS DataLabels: Change Color per Dataset for Value Labels. ChartJS Line Chart