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하이차트 yAxis change method

하이차트 그래프 생성 후 y축의 max, min value 변경

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>

<script src="https://code.highcharts.com/highcharts.js"></script>

<script src="https://code.highcharts.com/modules/exporting.js"></script>

<div id="container" style="height: 400px"></div>

<button id="button" class="autocompare">y축 크게</button>

<button id="button1" class="autocompare">y축 작게</button>

<script>

    var chart = Highcharts.chart('container', {

        endOnTick:false,

        startOnTick:false,

        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

    $('#button').click(function() {

        var max = chart.yAxis[0].max;

        var min = chart.yAxis[0].min;

        max+=10;

        chart.yAxis[0].setExtremes(min,max);

    });

     $('#button1').click(function() {

        var max = chart.yAxis[0].max;

        var min = chart.yAxis[0].min;

        min-=10;

        chart.yAxis[0].setExtremes(min,max);

    });

</script>