<el-form-item label="基线日期:" prop="baselineDate"><el-date-pickertype="date"v-model="form.baselineDate"placeholder="选择日期"format="yyyy/MM/dd"@change="(date, type) => changeTime(date, 'baselineDate')"></el-date-picker></el-form-item><el-form-item label="对比日期:" prop="comparisonDate"><el-date-pickertype="date"v-model="form.comparisonDate"placeholder="选择日期"format="yyyy/MM/dd"@change="(date, type) => changeTime(date, 'comparisonDate')"></el-date-picker></el-form-item>

  data() {return {form: {baselineDate: "",comparisonDate: "",},format: "yyyy/MM/DD",};},methods:{changeTime(date, type) {console.log(date);if (type == "comparisonDate") {this.form.comparisonDate = moment(date).format(this.format);} else {this.form.baselineDate = moment(date).format(this.format);}},},

坑： dom 中 value注意这里的是 “yyyy/MM/dd” 。moment 中在 format格式化的时候是 “yyyy/MM/DD”。"YYYY/MM/DD"也可以

还是要仔细看官网：https://element.eleme.cn/#/zh-CN/component/date-picker#ri-qi-ge-shi