element el-upload组件before-upload及on-success回调传递额外参数

element el-upload组件before-upload及on-success回调传递额外参数

html：

<el-upload
    v-loading="加载状态"
    name="文件参数名"
    :action="上传请求地址"
    :headers="请求头额外参数"
    :before-upload="
       (res) => {
           return beforeUpload(res, '额外参数');
        }
     "
     :on-success="
        (res) => {
            return uploadSuccess(res, '额外参数');
         }
     "
>
     <el-button>上传</el-button>
</el-upload>

js:

methods: {
	    // 图片上传前
    beforeUpload(res, type) {
      console.log(res) // 文件详情
      console.log(type) // 额外参数
    },
    // 图片上传成功
    uploadSuccess(res, type) {
      console.log(res) // 上传接口返回结果
      console.log(type) // 额外参数
    }
}

完事~