el_upload上传多张图片以及删除回显问题

<el-form-item label="产品图" prop="imgurls">
          <el-upload
            class="avatar-uploader"
            action=""
            :limit="3"
            :http-request="getFile"
            :show-file-list="false">
            <i v-if="form.imgurls.length < 3" class="el-icon-plus avatar-uploader-icon"></i>
          </el-upload>
          <div v-for="(item, index) in form.imgurls">
            <img v-if="item" :src="item" class="avatar">
            <el-button type="warning" @click="handleRemove(index)">删除</el-button>
          </div>
        </el-form-item>

handleRemove(index) {
        this.form.imgurls.splice(index, 1)
      },