浏览器占比变化echarts radar配置项内容和展示

      option = {
    title: {
        text: '浏览器占比变化',
        subtext: '纯属虚构',
        x:'right',
        y:'bottom'
    },
    tooltip: {
        trigger: 'item',
        backgroundColor : 'rgba(0,0,250,0.2)'
    },
    legend: {
        data: (function (){
            var list = [];
            for (var i = 1; i <=28; i++) {
                list.push((i + 2000) + '');
            }
            return list;
        })()
    },
    visualMap: {
        color: ['red', 'yellow']
    },
    radar: {
       indicator : [
           { text: 'IE8-', max: 400},
           { text: 'IE9+', max: 400},
           { text: 'Safari', max: 400},
           { text: 'Firefox', max: 400},
           { text: 'Chrome', max: 400}
        ]
    },
    series : (function (){
        var series = [];
        for (var i = 1; i <= 28; i++) {
            series.push({
                name: i + 2000,
                type: 'radar',
                symbol: 'none',
                itemStyle: {
                    normal: {
                        lineStyle: {
                          width:1
                        }
                    },
                    emphasis : {
                        areaStyle: {color:'rgba(0,250,0,0.3)'}
                    }
                },
                data:[
                  {
                    value:[
                        (40 - i) * 10,
                        (38 - i) * 4 + 60,
                        i * 5 + 10,
                        i * 9,
                        i * i /2
                    ],
                    name:i + 2000
                  }
                ]
            });
        }
        return series;
    })()
};