const chart = Highcharts.chart('container', {
    chart: {
        plotBorderWidth: 1
    },
    xAxis: {
    },
    series: [{
        data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
    }]
});

// the button action
document.getElementById('button').addEventListener('click', () => {
    var yAxis = chart.yAxis[0];

    yAxis.options.startOnTick = false;
    yAxis.options.endOnTick = false;

    chart.yAxis[0].setExtremes(40, 210);
});
