上传之前提示信息

src/views/modules/custom/evaluateofficer.vue

@@ -46,6 +46,7 @@
                      :on-preview="handlePreview"
                      multiple
                      :limit="1"
+                     :before-upload='beforeUpload'
                      :on-success='uploadSuccess'
                      :on-error='errorExceed'>
             <el-button type="primary">导入</el-button>
@@ -137,6 +138,13 @@ export default {
         this.$refs.evaluateofficerAdd.init()
       })
     },
+    beforeUpload (file) {
+        if(confirm('上传会覆盖之前数据，是否继续？')==true){
+          return true
+        }else{
+          return false
+        }
+    },
     errorExceed (file, fileList) {
       this.$message.error('上传失败请重试')
     },