文件类型限制

参考:https://blog.csdn.net/weixin_45393094/article/details/117395560

accept是打开文件夹时,就进行筛选了.

用法就是:

<el-upload
           class="upload-demo"
           drag
           action=""
           multiple
           accept=".mp4"
           >
    <el-icon class="el-icon--upload"><upload-filled /></el-icon>
    <div class="el-upload__text">
        将文件拖到此处,或者 <em>点击上传</em>
    </div>
    <template #tip>
        <div class="el-upload__tip">
            <el-alert type="warning" show-icon :closable="false" style="margin-bottom: 5px">
                <p>注意:仅支持mp4类型的文件!</p>
            </el-alert>
        </div>
    </template>
</el-upload>

效果:

png)