Chartjs onclick. This example will be fun and gives more options. type] defaults. 寻找一种在 chartjs 2. getElementsAtEventForNode method with the e event object, 'nearest' and an object with intersect set to true to get the nearest object that’s been clicked on. 0) chart is click I want to log which legend is being clicked. Let's explore how to do it. transitions Defined in types/index. It is intentional design of chartjs that legend onclick triggers both events. js provides Options Option resolution Options are resolved from top to bottom, using a context dependent route. It's perfect for people who need simple charts up and running as fast as possible. js. 0 to upon clicking on a point on a radar chart provide the data associated with that point i. I'm adding Chart Js in my react app to display data as bar chart. Oct 13, 2025 · Chart. This can be either: string value: Core calls this method using any of 'active', 'hide', 'reset', 'resize', 'show' or undefined. やりたいこと 下図のようなグラフでラベル部分(Januaryなど)をクリックすると詳細ページに遷移するといった動きを実現したかった 結論 きれいに実装するのは無理だった グラフのクリックを検知してクリックしたのがどの項目か取得することはできた やり方 Ch さっくり知りたい人のための要約 Chart. js and I am trying to create click events when a chart is created. This allows developers to create interactive charts where specific actions are triggered when a user clicks on a particular bar. js is a high-level, declarative charting library. log 中返回“undifined”。 Chart. This by checking the distance to each line segment in each series. I already have my tool tips enabled to show the information from my line charts, but I would also like to add an on click metho Legend Item Interface Items passed to the legend onClick function are the ones returned from labels. net/5rz5r9ag/12/ which shows how you can get onclick events with the regular chart js. stopPropagation(); } } Chartjs must register its own click event after the legend. , for printing). generateLabels. type defaults to config. data[i]); } } Please take a look at below runnable code and see how it works. d. x, you need to attach an onclick handler to the chart's canvas and use the getElementsForEventAtNode() method as follows. current, event)); } return ( <Bar ref={chartRef} data={data} onClick={onClick} /> ); } I am trying to add an on click event to my Line chart using Chart. onClick which is why this stop it executing. line - options for all line elements options. How to detect click on an axis label with chart. Data visualization is a cornerstone of modern web applications, enabling users to interpret complex data at a glance. gl, Plotly. js v4 (read below) and Chart. e. jsを読み込む CDNを利用してChart. Supports Chart. type] defaults Dataset level options dataset. 要約 v1ではグラフ毎にイベントからデータへ変換するメソッドが異なる v2では、すべてのグラフでgetElementAtEventかgetElementsAtEventに統一された 背景 Chart. When you remove the inner options layer it will work: Open source HTML5 Charts for your website const config = { type: 'bar', data: data, options: { plugins: { title: { display: true, text: 'Chart. datasets. index; alert(chart. The code works and I can display data correctly, the only issue I'm facing is that if one of the data values is too high, bar chart Open source HTML5 Charts for your website const DATA_COUNT = 7; const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100}; const labels = Utils. You can call . To create truly interactive experiences, you need to let users dig deeper: clicking a slice transitions • transitions: TransitionsSpec <TType> Inherited from AnimationOptions. elements. Chart. I have created a pie chart using ChartJS. How To Create Onclick Event in Bar Chart in Chart JS 4 In this video we will explore how to create onclick event in bar chart in chart js 4. The problem with using this with react chart js is that I can't access myLineChart object like they did in that example because that's not how you make a line chart in react. Passed the event, an array of active elements, and the chart. point - options for all point elements options - options for the whole chart The line chart allows a number of properties to be specified for I am a beginner to Chart. 'none' is also supported for skipping animations for single update. js v3 (see this guide). line - options for all line datasets options. defaults. jsはv2で大きな変更があります。 公式なmigration支援ド @giovanniciriello you don't need to override, you can call it directly 'legend' : { onClick: function (evt, item) { // do something Chart. ts:1779 Methods onClick onClick (event, elements, chart): void Called if the event is of type 'mouseup' or 'click'. Open source HTML5 Charts for your website const config = { type: 'bar', data: data, options: { plugins: { title: { display: true, text: 'Chart. dataset options. react-chartjs-2 React components for Chart. datasets[0]. js V2. js provides an onClick event feature by using it you can interact with specific segments of the pie chart. How do I achieve that? let my_cha All the examples for onclick i've seen are either for plain HTML or something like Vue. js into your project with this step-by-step guide for creating customizable, animated HTML5 charts. js is free and open source and you can view the source, report issues or contribute on GitHub. type, if not specified. js and stack. datasets [dataset. js 2系と3系でのonClickの書き方の違いをまとめると以下の通りです。 onClickの第3引数にchartインスタンスが含まれるようになった（公式） x軸、y軸のデフォルトのidが変化した（上の例ではy軸はyAxisでoptions内で定義） 要約 v1ではグラフ毎にイベントからデータへ変換するメソッドが異なる v2では、すべてのグラフでgetElementAtEventかgetElementsAtEventに統一された 背景 Chart. Simple yet flexible JavaScript charting library for the modern web A Plotly JavaScript Open Source Graphing Library Built on top of d3. js 2系と3系でのonClickの書き方の違いをまとめると以下の通りです。 onClickの第3引数にchartインスタンスが含まれるようになった（公式） x軸、y軸のデフォルトのidが変化した（上の例ではy軸はyAxisでoptions内で定義） How to have onClick callback for legend and default onClick behavior ? #5442 Closed jayanthrajpramuk opened on Apr 24, 2018 · edited by jayanthrajpramuk 大変だこれ。 0 You onClick function does not work because you define an options object within your options object and put the onClick in there. Gets single dataset element from mouse click event. When using a bundler, the helper functions have to be imported separately, for a full explanation of this please head over to the integration page. _datasetIndex el [0]. plotly. Open source HTML5 Charts for your website Dataset Properties Namespaces: data. js Bar Chart - Stacked I found this helpful link https://jsfiddle. js 提供的辅助程序使这个过程变得简单。 ¥A common occurrence is taking an event, such as a click, and finding the data coordinates on the chart where the event occurred. However, static charts only tell part of the story. Quickstart Install this library with peer dependencies: How do you configure ChartJS version 2. Gets all dataset elements from mouse click event. Oct 13, 2025 · For each chart, there are a set of global prototype methods on the shared chart type which you may find useful. This is not supported. global. It abstracts the basic logic but exposes the Chart. Open source HTML5 Charts for your website Events This sample demonstrates how to use the event hooks to highlight chart elements. js, we can add behavior to bar charts by handling onClick events. These are available on all charts created with Chart. log 中返回“undifined”。 position: 'bottom', onClick: () => { console. js provides I want to have the y label value, when I click on the bar. jsを読み込みます。 https://cdnjs Chart. jsでボタンをクリックしたときに、グラフを更新するサンプルを作ります。 最後にコピペで試せる、サンプルコードを載せます。 グラフを描画する Chart. log whenever clicking on any one of the label attributes in Char. In pixels all of those, right? So equipped with all the points (in order), we can find the nearest series. For ChartJS 4. js, the most popular charting library. 0 As using below method will return "undifined" in console. イベントオプション たとえば、チャートをクリックイベントにのみ反応させるには、次のようにします。 var chart = new Chart(ctx, { type: 'line', data: data, options: { // このチャートはmousemoveなどに反応しません events: ['click'] } }); import { useRef } from 'react'; import { Bar, getDatasetAtEvent } from 'react-chartjs-2'; function App() { const chartRef = useRef(); const onClick = (event) => { console. Need an API to fetch data? Please consider Cube, an open-source API for data apps. js provides helpers that make this a straightforward process. com 上書きではなく追加にする場合は以下のように対応する必要が Chart. datasets[index] - options for this dataset only options. jsにはpointLabelへのonClickはデフォルトで用意されていない 自作する場合は、にonClickイベントをつけて座標計算する必要がある マウスのクリックイベントから座標を取得し はじめに Chart. In it, we call myChart. click property sets the Click Event Handler for Data Series which is triggered when user Clicks on a Data Series Introduction vue-chartjs lets you use Chart. type] defaults Dataset animation As you can see in code ChartJS provides methods to get the coordinates of mouse click position, and position of all datapoints in all datasets. Is there any function in this library I can bind an onclick event to which will sho 有关插件的更多信息，请参阅 插件 将事件转换为数据值 一个常见的事件是采取一个事件，例如点击，并在图表上找到事件发生的数据坐标。Chart. Use this to destroy any chart instances that are created. 0 RadarChart 中的任何一个标签属性，使用以下方法将在 console. In this article, we will learn about how to create an onClick event in a pie chart. Chart level options options overrides [config. May 21, 2022 · onClick: (event, elements, chart) => { if (elements[0]) { const i = elements[0]. jsはv2で大きな変更があります。 公式なmigration支援ド 寻找一种在 chartjs 2. If this is a problem, you can just add additional code to check if both events occured, and in this case ignore the graph onclick event. I am trying to add an on click event to my Line chart using Chart. These items must implement the following interface. resize() with no parameters to have the chart take the size of its container element, or you can pass explicit dimensions (e. Please see animations docs for more details. _index を参照すればよいかと思います。 まとめ 以上、chartjsを使った散布図、clickの取得方法でした。 めでたし、めでたし。 有关插件的更多信息，请参阅 插件 将事件转换为数据值 一个常见的事件是采取一个事件，例如点击，并在图表上找到事件发生的数据坐标。Chart. Gets dataset from mouse click event. Here we continue on with the next item of adding a value in the chart and updating the bar chart with the onclick event. Jul 23, 2025 · In Chart. log('click!!') } }, } }, ただ上記のコードのように追加しちゃうと、通常の凡例の動きができなくなり、追加というより処理の上書きになってしまいます。 gyazo. js Bar Chart - Stacked The above is ES6, if your not using a supported browser below is the older ES5 equivilant. js pie (v2. I am trying to access all the elements of a bar when it is clicked on, but right now, the onClick method さっくり知りたい人のための要約 Chart. legend: { onClick: function (e) { e. type]. . label, data value, dataset name. jsにはpointLabelへのonClickはデフォルトで用意されていない 自作する場合は、にonClickイベントをつけて座標計算する必要がある マウスのクリックイベントから座標を取得し The question was, why the legend onclick was not being triggered. months ( {count: 7 I am using chartjs for making a small project. js In the example bellow, I can only detect click on the graph itself https://stackblitz. log(getDatasetAtEvent(chartRef. js, but for the examples, let's use a line chart we've made. 5. labels[i] + ': ' + chart. docs ポイントとしては、optionのところにonClickを設定すれば、イベントを取れるようになります。 どこをクリックされたか取得する場合は、 el [0]. current, event)); } return ( <Bar ref={chartRef} data={data} onClick={onClick} /> ); } . Contribute to uabochi/vote-frontend development by creating an account on GitHub. There are three helper methods to get data from click event. resize (width?, height?) Use this to manually resize the canvas element. Not much experienced with react, i was wondering if there was a way to get onClick for bar chart in react? When legends in the chart. 0 RadarChart. I already have my tool tips enabled to show the information from my line charts, but I would also like to add an on click metho 28 Working fine chartJs sector onclick ChartJS : pie Chart - Add options "onclick" import { useRef } from 'react'; import { Bar, getDatasetAtEvent } from 'react-chartjs-2'; function App() { const chartRef = useRef(); const onClick = (event) => { console. Pie charts, in particular, are ideal for displaying proportional data—think market share, budget allocations, or user demographics. 0 中的“label”元素上添加 onClick 句柄的方法，只要单击 Char. I am getting some confusion and hard luck in editing the points. When configuring the interaction with the graph via interaction, hover or tooltips, a number of different modes are available. This is run each time the canvas container is resized, but you can call this method manually if you change the size of the canvas nodes container element. legend やりたいこと 下図のようなグラフでラベル部分(Januaryなど)をクリックすると詳細ページに遷移するといった動きを実現したかった 結論 きれいに実装するのは無理だった グラフのクリックを検知してクリックしたのがどの項目か取得することはできた やり方 Ch Chart. data. Parameters Returns void Defined in types Open source HTML5 Charts for your website A mode can be provided to indicate transition configuration should be used. jsを使っていてチャートをクリックしてページ遷移させたい時に、凡例をクリックしても反応してしまってました。チャートエリア内だけで反応するように修正したので方法を記載し Open source HTML5 Charts for your website 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 Looking For a method to add onClick handle on the "label" element in chartjs 2. g. Now I want to create a click handler in which I can get the label and value of the part of the chart that I have created. For that I add an onClick function to the legend and call default function Chart. Like the above example, when I click on feb blue bar I want to have label value, which is 40 I looked for examples on stackOverFlow and Learn how to integrate Chart. js ships with over 40 chart types, including 3D charts, statistical graphs, and SVG maps. js object to give you maximal flexibility. js without much hassle inside Vue. function: that receives a context Next, we have the options property set to an object with the onClick method to catch any clicks that were made on the chart. See the full working example. type] options overrides [config. Mar 1, 2023 · Detecting what bar on a bar chart the user clicked is easy, but the API for doing so has changed several times between major ChartJS releases. com/edit/ng2-charts-bar Hi, I need to make the labels on a few ChartJs charts clickable (and later bars on a stacked bar charts), but all of the examples I have found to do this require that the onClick event is accessible. aqja, c7zc, bjkk, u6ll, jibg, urzqu, 8rfrx, qr027d, l8gqq, sdahrf,