el-button 选择与非选择按钮批量处理
<el-button v-for="(voyage,i) in data['voyages'][nowVoyage]"
:key="i"
class="c-work-bts"
type="primary"
:plain="nowWorkSpace!==i"
@click="chooseWorkSpace(i)"
size="small">{{ voyage.alias }}
</el-button>
