Chart js hover label

Chart js hover label

Hello to all, welcome to the therichpost. Chartjs is the very popular for barchart, line chart and many more. I was facing one problem during working with chartjs. When I change my chartjs bar chart event then hover again, It was showing me old data and this was the big issue for me but I am able to solved this and today I am sharing that code with all of you.

Here is the code for solved hovering over Chartjs Bar Chart showing old data:. There are so many tricky code in Chartjs and I will let you know all.

chart js hover label

Please do comment if you any query related to this post. Thank you.

10 Chart.js example charts to get you started

I have two chats line chart and bar chart. I am also facing the same Problem of hovering and showing old data. I tried using your code but it shows the old data on hovering. District ; groups3. Thank you! Write your comment here. This site uses Akismet to reduce spam.

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For now there is only the number. I found the solution on the ChartJS repository on Github. The solution is to use the option multiTooltipTemplate if your graph has multiple data.

Otherwise, you should use tooltipTemplate. Learn more. Asked 4 years, 10 months ago. Active 1 year, 1 month ago. Viewed 24k times. Where is the code you have tried?

Active Oldest Votes. Thanks soooo much! Daidon I've edited my post and answer and added a tag. Sorry, it was not clear at all but this was a solution for Ruby on Rails. Try this one, it will work. You just need to check what's the data coming in the label function. Idan 4, 6 6 gold badges 26 26 silver badges 40 40 bronze badges. Welcome to Stack Overflow!

Please check the formatting of your answer.When configuring interaction with the graph via hover or tooltips, a number of different modes are available. The modes are detailed below and how they behave in conjunction with the intersect setting.

chart js hover label

Gets the items that are at the nearest distance to the point. The nearest item is determined based on the distance to the center of the chart item point, bar.

You can use the axis setting to define which directions are used in distance calculation. If intersect is true, this is only triggered when the mouse position intersects an item in the graph.

This is very useful for combo charts where points are hidden behind bars. Finds the first item that intersects the point and returns it. Finds item at the same index. If the intersect setting is true, the first intersecting item is used to determine the index in the data. If intersect false the nearest item, in the x direction, is used to determine the index. To use index mode in a chart like the horizontal bar chart, where we search along the y direction, you can use the axis setting introduced in v2.

By setting this value to 'y' on the y direction is used. Finds items in the same dataset. If intersect false the nearest item is used to determine the index.

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Returns all items that would intersect based on the X coordinate of the position only. Would be useful for a vertical cursor implementation. Note that this only applies to cartesian charts. Returns all items that would intersect based on the Y coordinate of the position. This would be useful for a horizontal cursor implementation. Interaction Modes When configuring interaction with the graph via hover or tooltips, a number of different modes are available.

No results matching " ".Last post Mar 28, PM by diverguy. I'm working with Chart. Unfortunately, the default popup when you hover over the bars only shows the color of the bar and it's value.

The color of the bar is unhelpful to our users. I would like the popup to display the label of each bar in the group and its value.

Sort of like:. I tried it but it had no effect. No errors but no change to the popup. Perhaps it isn't set up correctly. Any suggestions? That's a great example of a simple bar chart.

However, mine is a bit more complex in that it has multiple bars for each label on the X-axis. Please see my example again. There is a For loop that builds the array of data for the bars for each point on the X-axis and then the array is added to the data object that is passed to the chart. The goal is to be able to hover over a cluster of bars for any given point on the X-axis and the resulting popup will display the name of each bar and its value instead of just the color and its value.

Something like:. Other forum posts had suggested using. Removing the extra two percent signs caused the popup to display as planned.

Print Share Twitter Facebook Email. Candice Zhou Star. Re: Chart.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. In example below, I have a graph with custom added labels on each of the bars after animation is complete.

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. But it looks like flickering and it bothers me really bad. So just try to change from onComplete callback to onProgress and the flickering disappears.

But I am not happy with that solution, because the code loops in duration of 1 sec for around 22 times. Lack of performance and so on The reason the animation is triggering is because there could be hover styles which need to apply.

Closing again since the hover issue was opened as Note, initial animations still work on a chart with these options. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. New issue. Jump to bottom. Labels help wanted.

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Copy link Quote reply. Hi guys! Thanks in advance! This comment has been minimized. Sign in to view. I am having this issue as well! Any help would be appreciated. Animation triggering while hovering the graph Reopening since the suggested solution to disable hover mode doesn't work.The legend configuration is passed into the options. The global options for the chart legend is defined in Chart. The legend label configuration is nested below the legend configuration using the labels key.

Items passed to the legend onClick function are the ones returned from labels. These items must implement the following interface. The following example will create a chart with the legend enabled and turn all of the text red in color. It can be common to want to trigger different behaviour when clicking an item in the legend.

This can be easily achieved using a callback in the config object. Lets say we wanted instead to link the display of the first two datasets. We could change the click handler accordingly. Now when you click the legend in this chart, the visibility of the first two datasets will be linked together.

Sometimes you need a very complex legend.

chart js hover label

In these cases, it makes sense to generate an HTML legend. Charts provide a generateLegend method on their prototype that returns an HTML string for the legend. To configure how this legend is generated, you can change the legendCallback config property. Note that legendCallback is not called automatically and you must call generateLegend yourself in code when creating a legend using this method.

Legend Configuration The chart legend displays data about the datasets that are appearing on the chart. Configuration options The legend configuration is passed into the options.

Name Type Default Description display boolean true Is the legend shown? This is unlikely to need to be changed in day-to-day use. Options are: 'top' 'left' 'bottom' 'right' Align Alignment of the legend.

Options are: 'start' 'center' 'end' Defaults to 'center' for unrecognized values.There are all sorts of things that can wrong, and I often just want to have something working so I can start tweaking it.

Legend Configuration

This is a list of 10 working graphs bar chart, pie chart, line chart, etc. Bar charts are created by setting type to bar to flip the direction of the bars, set type to horizontalBar. The colors of the bars are set by passing one color to backgroundColor all bars will have the same coloror an array of colors.

Line charts are created by setting type to line. By default, lines come with a dark transparent fill, covering the area between the line and x-axis. If you want to remove fills for all your line graphs, a more efficiant way of achieving the same effect is to change the global default for fills: Chart. Pie charts are created by setting type to pie. They are almost identical to doughnut chartsand will work with the same configurations part from changing the type. Radar charts—also known as web charts, spider charts, star charts—are created by setting type to radar.

Radar charts typically require more vertical space than other graphs to be legible, so you might have to tweak the graph proportions. A polar area chart is created by setting type to polarArea.

Polar area charts are closely related to pie charts, with the difference that in addition to the angles representing the relative size of the data points, the radius of each element is set in relation to its value. Doughnut charts are created by setting type to doughnut. They are almost identical to pie chartsand will work the same configurations. Horizontal bar charts are created by setting type to horizontalBar. They are identical to regular bar charts in every other aspect, and will work with the same configurations.

Setting the color for that group of bars is then done by passing a color to backgroundColor. You can mix several charts and overlay them on top of each other. This is done by setting type to bar not to e. To produce the graph above, for example, we have four data objects: two set to barand two set to linewhile the type for the Chart object is set to bar.

Bubble charts can be great for visualizing a lot of different data points simultaneously. In this example, every bubble is made up of three values: x position, y position, and size r —showing the GDP, happiness, and population, respectively, of each country.

I love to design and make things. I speak, teach, and consult at tech companies and startups, e. Say hi! Tobias Ahlin Bjerrome Stockholm, Sweden.

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