testzoom.js

var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
        labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
        datasets: [{
            label: '# of Votes',
            data: [12, 19, 3, 5, 2, 3]
        }]
    },
    options: {
        scales: {
            yAxes: [{
                ticks: {
                    beginAtZero:true
                }
            }]
        },
        // Container for pan options
        pan: {
            // Boolean to enable panning
            enabled: true,

            // Panning directions. Remove the appropriate direction to disable 
            // Eg. 'y' would only allow panning in the y direction
            mode: 'x',
            
            speed: 1
        },

        // Container for zoom options
        zoom: {
            // Boolean to enable zooming
            enabled: true,						
            // Zooming directions. Remove the appropriate direction to disable 
            // Eg. 'y' would only allow zooming in the y direction
            mode: 'x',
        }
    }
});

$('#reset_zoom').click(function(){
    myChart.resetZoom();
    console.log(myChart);
});

$('#disable_zoom').click(function(){
    myChart.ctx.canvas.removeEventListener('wheel', myChart._wheelHandler);
});

$('#enable_zoom').click(function(){
    myChart.ctx.canvas.addEventListener('wheel', myChart._wheelHandler);
});