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<>一、原始代码
<el-form-item class="form_bigt_p" label="项目起止时间:" prop="time"> <el-date-picker
unlink-panels class="bigWidth" :disabled="isDisabled" v-model.trim="
ruleForm.time" type="daterange" value-format="timestamp" range-separator="至"
start-placeholder="开始日期" end-placeholder="结束日期" ></el-date-picker> </
el-form-item>
<>由于后台返回的数据是两个 yyyy-mm-dd 格式的日期(startTime,endTime)，因此一开始采用
this.ruleForm.time = [ this.baseDateTemp(res.data.startTime), this.baseDateTemp
(res.data.endTime), ]; //this.baseDateTemp是全局的转日期为时间戳的方法
<>二、问题发现及处理
<>问题
得到的日期可以渲染在 el-date-picker 上，但是修改的时候不会回显
经测试后发现，此时可以触发 input 方法，但不触发 change 方法
<>处理方式
在 input 方法中可知，修改时，el-date-picker 所绑定的 v-model 的值已经改变，但是控件中没有实时更新
最终选择采用 this.$set 方法进行数据的更新，并成功解决此问题
修改后代码如下
<el-form-item class="form_bigt_p" label="项目起止时间:" prop="time"> <el-date-picker
unlink-panels class="bigWidth" :disabled="isDisabled" v-model.trim="
ruleForm.time" type="daterange" value-format="timestamp" range-separator="至"
start-placeholder="开始日期" end-placeholder="结束日期" @input="testClick" ></
el-date-picker> </el-form-item> testClick(e) { this.$nextTick(() => { this.
ruleForm.time = null; this.$set(this.ruleForm, "time", [e[0], e[1]]); }); }, //
将后台获取到的两个日期转为time的方法修改为 this.$set(self.ruleForm, "time", [ this.baseDateTemp(res
.data.startTime), this.baseDateTemp(res.data.endTime) ]);
