score:7

Highcharts provides a event called selection

chart:{
  events: {
    selection: function() { /* your code here */ }
  }
}

this fiddle will help you http://jsfiddle.net/M7cfm/

score:11

Just use setExtremes event, see: http://jsfiddle.net/BlackLabel/pjy9682s/3/

var chart = new Highcharts.Chart({
    chart: {
        renderTo: 'container',
        zoomType: 'x'
    },
    xAxis: {
        events: {
            setExtremes: function (e) {
                if(typeof e.min == 'undefined' && typeof e.max == 'undefined'){
                     console.log('reset zoom clicked');   
                } else {
                     console.log('zoom-in');   
                }
            }
        }
    },
    series: [{
        data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 29.9, 71.5, 106.4, 129.2, 144.0, 176.0]
    }]
});

Related Query

More Query from same tag