Chart js custom legend click event. chart_instance. HTML Legends Sometimes you nee...

Chart js custom legend click event. chart_instance. HTML Legends Sometimes you need a very complex legend. 5. Legend Onclick Chart JS | ChartJS 2. By combining this with the legend events we can create charts that toggle data series visibility on click of corresponding legend items. I"ve make a custom legend component and I'm able to show/hide using the above codes. I would like to have value above Oct 4, 2017 · /> // Method which insert the html content insertLegends(chart) { this. 0) chart is click I want to log which legend is being clicked. This function is triggered when a legend item is clicked, allowing you to define custom behavior. Oct 13, 2025 · Legend The chart legend displays data about the datasets that are appearing on the chart. 9. Jan 16, 2023 · I wanted to do update percentage values in the pie chart when a label is clicked so I though that I can add the default legend onClick function into a custom function that also updates percentages values. Jul 23, 2025 · In Chart. options: { legend: { } } }); Now when you click the legend in this chart, the visibility of the first two datasets will be linked together. It raise the following exception when using it with donut chart: TypeError: Cannot read property '_meta' of undefined at Chart. For that I add an onClick function to the legend and call default function Chart. ApexCharts is a a free and open-source modern charting library that helps developers to create beautiful and interactive visualizations for web pages. Oct 13, 2025 · HTML Legend This example shows how to create a custom HTML legend using a plugin and connect it to the chart in lieu of the default on-canvas legend. innerHTML = chart. js pie (v2. Chart. This does mean that we remove the default effect build to create our own click Oct 13, 2025 · A common occurrence is taking an event, such as a click, and finding the data coordinates on the chart where the event occurred. Configuration options Namespace: options. In v1* of ChartJS I simply added a property to the new Chart constructor such as May 16, 2016 · I'm actually facing a similar issue. global. I have created donut with default legend provided by ChartJS but I need some modification. getDatasetMeta (core. plugins. Second, how and where can I put an onClick event for each legend? May 3, 2016 · I'm trying to create a custom legend template in ChartJS v2. You can use it as a template to jumpstart your development with this pre-built solution. I need to create custom legend for my donut chart using ChartJS library. onClick callback function to customize the chart as well as the legend on click. Steps: Here the button is created in html, but is made active thanks to javascript. Oct 13, 2025 · Open source HTML5 Charts for your website Events This sample demonstrates how to use the event hooks to highlight chart elements. 0 New chart axis types Plot complex, sparse datasets on date time, logarithmic or even entirely custom scales with ease. generateLegend(); } First, is this a right approach? I had to create an inline condition inside the component to prevent chart to be null. js provides helpers that make this a straightforward process. x. New in 2. 0. However, this only works for bar chart. position property Jun 2, 2021 · I have 2 charts. For an html legend to work you need to place an empty div at your web page with the ID you provide in the options to bind to like so: <div id="legend-container"></div>. js, you can use the legend. Apr 9, 2020 · That will make it so that you can create your own HTML legend which shows/hides data when a legend element is clicked using the API to match the functionality of the built-in legend. In this video we will explore how to create an onclick event on the legend. I'm trying to create custom onClick handler for pie chart legend and I get this err. May 19, 2021 · When legends in the chart. chartLegendContainerGlobal. Second one is pie chart and it doesn't work. controller. 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 Explore this online react-chartjs-2-understanding-custom-legend-legendonclick-generatelegend-legend-event-listener sandbox and experiment with it yourself using our interactive online playground. refs. legend. First one is bar chart and it works with same code. js:656) Have anyone faced a similar issue please? Legend title Data columns with expressions Column headers AxisMarker entries Custom entries SmartPalette legend with ColorBar or ranges Entry icon customization Interactivity events Chart with only a legend: Legend Alone Sample Layout / Position The legend can be positioned anywhere around the chart area by setting the legend. legend, the global options for the chart legend is defined in Chart. defaults. peh lpv ioe hrn ttx mck lag aqk pfp vpz qew cve elk ybk euw