To clear a chart created with Chart.js from a canvas in a way that hover events cannot be triggered, you can use the destroy() method provided by Chart.js.

This method removes the chart from the canvas and clears all event listeners associated with it. Here’s how you can do it:

// Assume chart is your Chart.js instance
chart.destroy();

This will remove the chart from the canvas and all associated event listeners, including hover events.

After calling this method, the canvas will be empty, and no events will be triggered when hovering over it.

Make sure you have a reference to your Chart.js instance. If you created the chart with Chart.js, you probably have something like this:

var ctx = document.getElementById('myChart').getContext('2d');
var chart = new Chart(ctx, {
    // chart configuration
});

In this case, chart is your Chart.js instance, so you can call destroy() on it when you want to clear the chart from the canvas.