element 属性传递自定义参数

<el-autocomplete
              @blur="blurTwitter(item)"
              class="inline-input"
              :placeholder=" ` Enter your ${item.socialWebsite} handle...`"
              v-model="item.value"
              :fetch-suggestions="((queryString,cb) => {querySearchAsync(queryString,cb,item)})"
              @select="handleSelectTwitter(item)"
            ></el-autocomplete>

querySearchAsync(queryString, cb, item) {
  console.log(querString,cb,item)  
}