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docs(legend): update default onClick example for v4 (fixes #12144) #12148

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docs(legend): update default onClick example for v4 (fixes #12144) #12148

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15 changes: 6 additions & 9 deletions docs/configuration/legend.md
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Expand Up @@ -162,19 +162,16 @@ const chart = new Chart(ctx, {

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.

:::tip Updated
Starting from Chart.js v4, use `toggleDataVisibility()` and `update()` instead of the old `show()` / `hide()` methods.
:::

The default legend click handler is:

```javascript
function(e, legendItem, legend) {
const index = legendItem.datasetIndex;
const ci = legend.chart;
if (ci.isDatasetVisible(index)) {
ci.hide(index);
legendItem.hidden = true;
} else {
ci.show(index);
legendItem.hidden = false;
}
legend.chart.toggleDataVisibility(legendItem.index);
legend.chart.update();
}
```

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