vant-weapp/example/pages/uploader/index.wxml

<demo-block title="基础用法" padding>
  <van-uploader
    name="1"
    file-list="{{ fileList1 }}"
    bind:after-read="afterRead"
    bind:delete="delete"
    bind:click-preview="clickPreview"
  />
</demo-block>

<demo-block title="上传视频" padding>
  <van-uploader
    name="7"
    accept="video"
    file-list="{{ fileList7 }}"
    bind:after-read="afterRead"
    bind:delete="delete"
  />
</demo-block>

<demo-block title="文件预览" padding>
  <van-uploader
    name="2"
    file-list="{{ fileList2 }}"
    multiple
    bind:after-read="afterRead"
    bind:delete="delete"
    bind:click-preview="clickPreview"
  />
</demo-block>

<demo-block title="限制上传数量" padding>
  <van-uploader
    name="3"
    file-list="{{ fileList3 }}"
    multiple
    max-count="{{ 2 }}"
    bind:after-read="afterRead"
    bind:delete="delete"
    bind:click-preview="clickPreview"
  />
</demo-block>

<demo-block title="自定义上传样式" padding>
  <van-uploader
    name="4"
    file-list="{{ fileList4 }}"
    max-count="{{ 2 }}"
    bind:after-read="afterRead"
    bind:delete="delete"
    bind:click-preview="clickPreview"
    use-slot="{{ true }}"
  >
    <van-button icon="photo" type="primary">上传图片</van-button>
  </van-uploader>
</demo-block>

<demo-block title="上传前校验" padding>
  <van-uploader
    name="5"
    file-list="{{ fileList5 }}"
    bind:before-read="beforeRead"
    bind:after-read="afterRead"
    bind:delete="delete"
    bind:click-preview="clickPreview"
    use-before-read="{{ true }}"
  />
</demo-block>

<demo-block title="云存储上传" padding>
  <van-uploader
    name="6"
    file-list="{{ fileList6 }}"
    bind:before-read="beforeRead"
    bind:after-read="afterRead"
    bind:delete="delete"
    bind:click-preview="clickPreview"
    use-before-read="{{ true }}"
  />
  <view class="demo-margin-bottom">
    <van-button type="primary" bind:click="uploadToCloud">上传至云存储</van-button>
  </view>
</demo-block>