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   http://www.apache.org/licenses/LICENSE-2.0

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<html>
    <head>
        <meta charset="utf-8">
        <script src="lib/esl.js"></script>
        <script src="lib/config.js"></script>
    </head>
    <body>
        <style>
            html, body, #main {
                width: 100%;
                height: 100%;
            }
        </style>
        <div id="main"></div>
        <script>

            require([
                'echarts'
                // 'echarts/chart/bar',
                // 'echarts/component/legend',
                // 'echarts/component/grid',
                // 'echarts/component/axis',
                // 'echarts/component/dataZoom'
            ], function (echarts) {

                var chart = echarts.init(document.getElementById('main'), null, {

                });

                var xAxisData = [];
                var data1 = [];
                var data2 = [];
                var data3 = [];

                for (var i = 0; i < 20; i++) {
                    xAxisData.push('类目' + i);
                    data1.push(Math.random() * 2);
                    data2.push(Math.random() * 2);
                    data3.push(Math.random() * 2);
                }

                chart.setOption({
                    legend: {
                        data: ['bar', 'bar2', 'bar3']
                    },
                    xAxis: {
                        // data: ['类目1', '类目2', '类目3', '类目4', '类目5',]
                        data: xAxisData,
                        boundaryGap: true
                    },
                    yAxis: {
                        // scale: true
                        boundaryGap: false
                    },
                    series: [
                        {
                            name: 'bar',
                            type: 'bar',
                            data: data1
                        },
                        {
                            name: 'bar2',
                            type: 'bar',
                            data: data2
                        },
                        {
                            name: 'bar3',
                            type: 'bar',
                            data: data3
                        }
                    ],
                    dataZoom: {
                        show: true,
                        orient: 'vertical',
                        yAxisIndex: [0]
                    }
                });
            })

        </script>
    </body>
</html>