1、搜索框添加判断 v-if="advanced"

<el-form-item label="创建日期" v-if="advanced"><el-date-pickerv-model="daterangeLedat"size="small"style="width: 240px"value-format="yyyy-MM-dd"type="daterange"range-separator="-"start-placeholder="开始日期"end-placeholder="结束日期"></el-date-picker></el-form-item>

2、添加展开收起按钮

<el-col :md="6" align="right" style="margin-left: auto;">
<el-form-item><el-button class="filter-item" type="primary" @click="handleQuery">搜索</el-button><el-button class="filter-item" style="margin-left: 8px;" @click="resetQuery">重置</el-button><a @click="toggleAdvanced" style="margin:0 4px 0 8px ;vertical-align: middle;">{{ advanced ? '收起' : '展开' }}<i :class="advanced ? 'el-icon-arrow-up' : 'el-icon-arrow-down'"></i></a></el-form-item>
</el-col>

3、向data添加变量

advanced: false,

4、添加事件方法

/** 展开按钮操作 */toggleAdvanced() {this.advanced = !this.advanced},

5、展示

不点

点击后