title怎么添加下划线

[cqiuping]

One-line summary [问题简述]

我在title添加了一个link，但是title没有下划线，无法明显告知是一个链接，要怎么给title文本添加下划线

ECharts option [ECharts配置项]

option = {
title: {
        link: '../../',
        text: '链接怎么添加下划线'
    },
    xAxis: {
        data: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']
    },
    yAxis: {},
    series: [{
        type: 'line',
        data: [220, 182, 191, 234, 290, 330, 310]
    }]

}

[territoryfan]

自己用div写一个替换

[stale]

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