关于element-ui 对话框头部的title插槽

    <el-dialog
      :visible.sync="dialog"
      width="400px"
      center>
      <template slot="title">
        <div>
          <span v-text="$t('collectorFirmware.addCollectorFirmware')"></span>
          <i @click="help" class="iconfont icon-dianzhangongxiang-copy"></i>
        </div>
      </template>
    </el-dialog>

    help(){    //帮助
      this.$message.success('你点击了help')
    },

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