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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>
        <script src="data/pie-texture.js"></script>
        <script src="lib/dat.gui.min.js"></script>
        <link rel="stylesheet" href="lib/reset.css" />
        <script src="lib/testHelper.js"></script>
    </head>
    <body>
        <style>
        </style>

        <div id="main" style="width:100%;height:100%;"></div>

        <script>
            var chart;
            require([
                'echarts'
                // 'echarts/chart/pie',
                // 'echarts/component/legend',
                // 'echarts/component/grid',
                // 'echarts/component/tooltip',
                // 'echarts/component/toolbox'
            ], function (echarts) {

                chart = echarts.init(document.getElementById('main'), null, {
                    renderer: 'svg'
                });

                window.onresize = chart.resize;

                chart.setOption({
                    animation: 'auto',
                    animationDuration: () => 0,
                    title : {
                        text: '某站点用户访问来源',
                        subtext: '纯属虚构',
                        x:'center'
                    },
                    tooltip : {
                        trigger: 'item',
                        formatter: "{a} <br/>{b} : {c} ({d}%)"
                    },
                    legend: {
                        orient: 'vertical',
                        left: 'left',
                        data: ['直接访问','邮件营销','联盟广告','视频广告','搜索引擎']
                    },
                    series : [
                        {
                            name: '访问来源',
                            type: 'pie',
                            radius : '55%',
                            center: ['50%', '60%'],
                            data:[
                                {value:335, name:'直接访问'},
                                {value:310, name:'邮件营销'},
                                {value:234, name:'联盟广告'},
                                {value:135, name:'视频广告'},
                                {value:1548, name:'搜索引擎'}
                            ],
                            itemStyle: {
                                emphasis: {
                                    shadowBlur: 10,
                                    shadowOffsetX: 0,
                                    shadowColor: 'rgba(0, 0, 0, 0.5)'
                                }
                            }
                        }
                    ]
                });
            })

        </script>


    </body>
</html>