~~~ //1.在组件的js文件中配置 externalClasses: ['tag-class'], ~~~ ~~~ //2.在组件的wxml中使用 <view class="tag-class"> {{text}} <slot name="after"></slot> </view> ~~~ ~~~ //3.在父组件中定义tag-class <v-tag text="{{item.content}}" tag-class="ex-tag"> </v-tag> ~~~ ~~~ //4.在wxss文件中设置ex-tag的样式 .ex-tag{ color:red; } ~~~