element-ui upload組件 onchange事件 傳自定義參數

 <el-upload

    class="upload-demo"

    list-type="picture"

    accept="image/*"

    :show-file-list="false"

    :multiple="false"

    :auto-upload="false"

    action="https://jsonplaceholder.typicode.com/posts/"

     :on-change="(file, fileList) => {handleChange(file, fileList, item)}"

    :on-preview="handlePreview">

    <a size="small" type="primary">點擊修改</a>

</el-upload>

 

 

 

其中item爲自定義參數