原因:因为dialog不是销毁组件,是隐藏组件
解决:加上v-if
<el-dialog title="添加" :visible.sync="dialogVisible" class="dialog-content" width="600px" v-if="dialogVisible">
<div class="dialog-content">
<el-form :model="form" :rules="rules" label-width="120px" label-position="left" ref="form">
<el-form-item label="起止时间" prop="time" v-if="dialogVisible">
<el-date-picker @blur="changeTime" v-model="form.time" type="daterange" range-separator="至" start-placeholder="开始日期" end-placeholder="结束日期" value-format="yyyy-MM-dd" format="yyyy-MM-dd" style=" 100%"></el-date-picker>
</el-form-item>
<el-form-item label="标题" prop="yh_title">
<el-input v-model="form.yh_title"></el-input>
</el-form-item>
<el-form-item label="副标题">
<el-input v-model="form.yh_ftitle"></el-input>
</el-form-item>
<el-row style="text-align: right">
<el-button type="default" @click="dialogVisible = false">取消</el-button>
<el-button type="primary" v-else @click="handleConfirm">确认</el-button>
</el-row>
</el-form>
</div>
</el-dialog>