How to Change Data Labels Values Onhover on Bar Chart in Chart js

How to Change Data Labels Values Onhover on Bar Chart in Chart js

In this video we will cover how to change data labels values onhover on bar chart in chart js. Using the chartjs-plugin-datalabels we can add nice datalabels on the bar chart. However, how can we add extra values or different values once we hover on a bar. Luckily the option is quite easy to do but having it done professionally requires the use of data structures.

The hardest part here is understanding how chart js knows that we hover on a specific bar and if we are on it yes or no. These are all challenges that we are going solve right now.

Let's explore this right now!

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Creating charts in javascript is very rewarding but extremely challenging. The Chart JS library made it easier to render charts. However the chart js documentation is hard to understand for many. It requires a lot of different moving parts to work along. The canvas tag, javascript, arrays and Chart JS all need to be combined to draw an eye catching bar chart or line chart.

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With chart js you can make line chart, bar chart, pie chart, doughnut chart, scatter chart, polar area chart, radar chart, gauge chart and area chart. And with some clever tricks and visual adjustment more can be done.

[Rizkiaqa]

once again, thank you very much for sharing. Your content is really helping me.

[naveen_Saini_]

hey that's great but if i put the some kind of data so some data is like this 0.3, 0.5 so there is not happening i am not able to hover on that because it is very less so how will i resolve this please help my i stuck in this

[playcodedev]

Hello.. how do I format the values of the data array in monetary decimal format? Example, R$ 2.500, 00 ?

[avichaljain]

Hey bro, I've been following your videos for part few weeks. Can you please help me with, how can I display both the axes in different canvases and make it responsive, since the ticks are going to change. Like in creating a table of 2X2, (0, 0) is the charting area, (0, 1) is where I am displaying the y-axis, and (1, 0) is to display the x-axis. I'm having a problem with the updation of ticks in the x-axis canvas.

Note- I'm working on candlestick graph. So, the data is on daily basis(since 1996), so I cant display all the ticks.