Element 'Chart' is not a known element - dotnetCHARTING
2013年3月7日 · The site code compiles ok, but all aspx pages using the charting library complain that the Chart tag does not exist (warning that it might be a compile error). The aspx pages do not render the charts. Each page has a reference to the assembly: <%@ Register Assembly="dotnetCHARTING" Namespace="dotnetCHARTING" …
javascript - Chart.js: Bar Chart Click Events - Stack Overflow
Provided at line 3727 of Chart.js, Standard Build, is the method .getElementAtEvent. This method returns me the "chart element" that was clicked on. There is sufficent data here to determine what data to show in a drill-down view of the dataset clicked on. On the first index of the array returned by chart.getElementAtEvent is a value ...
How to clear a chart from a canvas so that hover events cannot be ...
2014年7月18日 · If the key is a string, it is interpreted as the ID of the Canvas element for the Chart. The key can also be a CanvasRenderingContext2D or an HTMLDOMElement. Note: This will return undefined if no Chart is found. If the instance of the chart is found, it signifies that the chart must have previously been created.
Click events on Pie Charts in Chart.js - Stack Overflow
2017年1月26日 · Looks for the element under the event point, then returns all elements at the same data index. This is used internally for 'label' mode highlighting. Calling getElementsAtEvent(event) on your Chart instance passing an argument of an event, or jQuery event, will return the point elements that are at that the same position of that event.
javascript - Chart.js: get chart data from canvas - Stack Overflow
2020年1月6日 · Now some pseudo-code how I would like to update say chart 2 at a later time: var updateChart = $('#chart-2'); // This is where I'd need to get the chart data from the canvas element updateChart.data.datasets[0].data = updateChart.data.datasets[0].data.push(Math.random()); updateChart.update();
React ChartJS 2 : Get data on clicking the chart
2020年7月12日 · For the way you have structured your data in barData; the entire element is clicked on and not just a specific bar. It returns an array of length 3 for the date. It returns an array of length 3 for the date.
C# Chart Series not found - Stack Overflow
2015年12月16日 · Element 'Chart' is not a known element - dotnetCHARTING. 3. C# Charting Library. 0.
html - Chart.js canvas resize - Stack Overflow
Detecting when the canvas size changes can not be done directly from the canvas element. Chart.js uses its parent container to update the canvas render and display sizes. However, this method requires the container to be relatively positioned and dedicated to the chart canvas only.
javascript - Chart.js: chart not displayed - Stack Overflow
Although unrelated to this specific scenario, I'd like to comment that if the chart is created inside a hid element (display:none) and the element is shown after, the chart won't display. Only workaround I found was to show the element before creating the chart (calling chart.resize() won't work either). This caught me twice so with this ...
Check if chart is rendered in apexcharts - Stack Overflow
2020年2月12日 · Even though this question asks to "check if the chart is rendered", the code suggests that they actually want to "check if the chart exists". I would also like to check if a chart exists before rendering it, and I suspect this is the more common issue.