78👍
According to the docs there is a onClick
handler for the legend exposing the event object. If you stopPropagation
it stops the data series hiding:
let chart = new Chart(elem.find('canvas')[0], {
type: 'line',
data: {
labels: [],
datasets: []
},
options: {
responsive: true,
maintainAspectRatio: false,
legend: {
onClick: (e) => e.stopPropagation()
}
}
});
The above is ES6, if your not using a supported browser below is the older ES5 equivilant.
legend: {
onClick: function (e) {
e.stopPropagation();
}
}
Chartjs must register its own click event after the legend.onClick
which is why this stop it executing.
20👍
Also, you can use null
or any value which is evaluated false
to disable click event on all legend.
options: {
legend: {
onClick: null
}
}
Note: Ignore click event by onClick
on following code in Chart.js ( https://github.com/chartjs/Chart.js/blob/6bea15e7cf89003e3a5945a20cf1d2cc5096728e/src/plugins/plugin.legend.js#L481 )
16👍
At the time of writing (Chart.js v3.5.1), the correct answer is
options: {
plugins: {
legend: {
onClick: null
}
}
}
As per Natan Almeida de Lima’s comment above. Adding it as an answer since I didn’t see it as a one-line comment which I only found after figuring it out for myself.
7👍
To override the default behavior of clicking on a legend item, that is showing/hiding the associated dataset in the chart, you may use the following option (shown inside options
for clarity):
options: {
legend: {
onClick: function(event, legendItem) {}
}
}
This is the way to override the default behavior, that is by supplying a function with the same arguments. According to your requirements, this function should have an empty body (and, thus, return immediately), since absolutely nothing should happen when clicking on a legend item. Look for legend.onClick
in the docs. While it currently appears under only two chart types, this option should work for all chart types.
-1👍
You need to add properties legendItemClick
to override default action. It’s work good for pie chart
legendItemClick: function(e){
console.log("Clicked an item with text: " + e.text);
e.preventDefault();
}
https://docs.telerik.com/kendo-ui/api/javascript/dataviz/ui/chart/events/legenditemclick