数据文本若包含html标签，会将这些标签解析成html元素。在线等echarts dotted配置项内容和展示

series中的文本项目若包含html标签，鼠标放上后的详细描述框会将这些标签解析成html元素。而在图表的title实例等地方则是以文本形式输出的？有人遇到过这个问题吗？在线等！

      var json = {
    xAxis: ['04-18', '04-25', '05-02', '05-09', '05-16'],
    data: [
        [0, -1, 1, 1.8, 2.8],
        [0, -1.8, -1.2, -5, -4],
        [0, -3, -2, -7, -6]
    ],
    legend: ['建议模型', '沪深300', '全资产账户<button>确定</button>'],
    legends: [0, 1, 2]
};

myChart.on('legendselectchanged', function(params) {
    json.legends = [];
    var selected = [];
    var index = 0;
    echarts.util.each(params.selected, function(value, key) {
        index++;
        if (value) {
            selected.push(key);
            json.legends.push(echarts.util.indexOf(json.legend, key));
        }
    });
    console.log(json.legends);
});

option = {
    color: ['#367da2', '#dda42d', '#505e9c'],
    title: {
        text: '账户收益<button>123</button>',
        left: 'center',
        textStyle: {
            fontSize: 18,
            fontWeight: 'normal',
            fontFamily: 'Microsoft YaHei'
        },
        top: '7%'
    },
    legend: {
        bottom: '5%',
        data: json.legend
    },
    tooltip: {
        trigger: 'axis',
        padding: 0,
        extraCssText: 'box-shadow: 0 0 7px rgba(0, 0, 0, 0.6);',
        axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'line' // 默认为直线，可选为：'line' | 'shadow'
        },
        backgroundColor: 'rgba(255,255,255,0)',
        show: true,
        formatter: function(params) {
            var stl = '';
            $(params).each(function(index, serie) {
                if (serie.componentType === 'series' && serie.dataIndex > 0) {
                    var colors = myChart.getOption().color;
                    var color = colors[json.legends[index] % colors.length];
                    var ssName = html_encode(serie.seriesName);
                    stl += '<br /> <div style="display:inline-block;width:10px;height:10px;border-radius:5px;background:' + color + ';"></div>&emsp;' + ssName + ':&emsp;' + serie.value;
                }
            });
            return stl ? '<div style="background:#fff;padding:15px;color:#999;border-radius:5px;">' + (params[0] ? params[0].name : params.seriesName) + stl + '</div>' : '';
        }
    },
    xAxis: {
        boundaryGap: false,
        axisLine: {
            onZero: false
        },
        axisTick: {
            show: false
        },
        data: json.xAxis
    },
    yAxis: {
        splitNumber: 6,
        max: 3.5,
        min: -7,
        interval: 1.75,
        axisLabel: {
            formatter: function(value) {
                return value.toFixed(2) + '%';
            }
        },
        axisLine: {
            show: false
        },
        axisTick: {
            show: false
        },
        splitLine: {
            lineStyle: {
                type: 'dotted',
                color: '#666'
            }
        }
    },
    grid: {
        left: '0%',
        right: '4%',
        bottom: '10%',
        top: '12%',
        containLabel: true
    },
    series: [{
        type: 'line',
        name: '建议模型<button>确定11</button>',
        data: json.data[0]
    }, {
        type: 'line',
        name: '沪深300<button>确定22</button>',
        tooltip: {
            color: "367da2"
        },
        data: json.data[1]
    }, {
        type: 'line',
        name: '全资产账户<button>确定22</button>',
        data: json.data[2]
    }]
};

function html_encode(str) {
    var s = "";
    if (str.length == 0) return "";
    s = str.replace(/&/g, "&gt;");
    s = s.replace(/</g, "&lt;");
    s = s.replace(/>/g, "&gt;");
    s = s.replace(/  /g, " &nbsp;");
    s = s.replace(/\'/g, "&#39;");
    s = s.replace(/\"/g, "&quot;");
    s = s.replace(/\n/g, "<br>");
    return s;
}