Vue的form表单实现下拉搜索

     <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="商户名称" prop="merchantId">
        <el-select v-model="queryParams.merchantId" placeholder="请选择商户名称" clearable filterable>
          <el-option
            v-for="item in merchantIdOptions"
            :key="item.id" :label="item.name" :value="item.id">
          </el-option>
        </el-select>
      </el-form-item>

必须加：clearable filterable