el-button 中icon在文字前和在文字后的写法

参考:https://blog.csdn.net/qq_38210427/article/details/141264052

一图标在前，在后的写法

 <el-button type="primary" :icon="Search">Search</el-button>
    
 
<el-button type="primary">
      Upload<el-icon class="el-icon--right"><Upload /></el-icon>
</el-button>