Accepted answer

you can use window.location.replace() to redirect to another page, and pass the parameters in a query string, like so:

onclick: function(c,chart_instances){
        ev = chart_instances[0];
        window.location.replace("./yournextpage?label=" +[ev._index] + "&value=" +[ev._index]);

    } catch (e){
        //ignore misclicks

refer to this question on instructions to retrieve the data from a query string in your next page.

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