add gradient colors above of the chart line? - Javascript highcharts

Javascript examples for highcharts:Line Chart

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Description

add gradient colors above of the chart line?

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
      <script type="text/javascript" src="https://code.jquery.com/jquery-1.9.1.js"></script> 
      <script type="text/javascript">
$(function () {/*from   w w w.  j a v  a2 s.  c  o m*/
    $.getJSON('https://www.highcharts.com/samples/data/jsonp.php?filename=aapl-c.json&callback=?', function (data) {
        // Create the chart
        $('#container').highcharts('StockChart', {
            chart: {
                type: 'area',
                backgroundColor: {
                    linearGradient : {
                        x1: 0,
                        y1: 1,
                        x2: 0,
                        y2: 0
                    },
                    stops : [
                        [0, Highcharts.getOptions().colors[0]],
                        [1, Highcharts.Color(Highcharts.getOptions().colors[0]).setOpacity(0).get('rgba')]
                    ]
                }
            },
            rangeSelector: {
                selected: 1
            },
            title: {
                text: 'AAPL Stock Price'
            },
            yAxis: {
                reversed: false,
                showFirstLabel: false,
                showLastLabel: true,
                gridZIndex: 1000
            },
            series: [{
                name: 'AAPL Stock Price',
                data: data,
                threshold: null,
                fillColor : "#fff",
                zIndex: 1000,
                tooltip: {
                    valueDecimals: 2
                }
            }]
        });
    });
});

      </script> 
   </head> 
   <body> 
      <script src="https://code.highcharts.com/stock/highstock.js"></script> 
      <script src="https://code.highcharts.com/stock/modules/exporting.js"></script> 
      <div id="container" style="height: 400px; min-width: 310px"></div>  
   </body>
</html>

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