自定义的数值样式嵌套在默认插槽里 <template><u-line-progress:percentage="30"><textclass="u-percentage-slot">{{30}}%</text></u-line-progress></template><stylelang="scss"scoped>.u-percentage-slot{padding:1px 5px;background-color:$u-warning;color:#fff;border-radius:100px;font-size:10px...