点击修改按钮赋值的时候用这种方法就可以了,具体原理我也没清楚,但是确实可以
this. s e t ( t h i s . f o r m , " a l l d a t e " , [ t h i s . f o r m . s t a r t d a t e , t h i s . f o r m . e n d a t e ] ) t h i s . set(this.form,"alldate",[this.form.startdate,this.form.endate]) this. set(this.form,"alldate",[this.form.startdate,this.form.endate])this.set(原数组, 索引值, 需要赋的值)

代码:

/** 修改按钮操作 */
    handleUpdate(row) {
      getAdShops(id).then(response => {
        if(response.data.adTimeStart!=null && response.data.adTimeEnd!=null){
          //用这个方法赋值
          this.$set(this.form,"adTime",[ response.data.adTimeStart,response.data.adTimeEnd])
        }
      });
    },
		<el-col :span="12">
            <el-form-item label="广告投放时间" prop="adTime">
              <el-date-picker
                v-model="form.adTime"
                type="daterange"
                range-separator="至"
                style="width: 60%"
                start-placeholder="开始日期"
                end-placeholder="结束日期"
                clearable
                value-format="yyyy-MM-dd"
                @blur="changePackageTime"
              >
              </el-date-picker>
            </el-form-item>
          </el-col>
 changePackageTime() {
      this.form.adTimeStart = this.form.adTime[0];
      this.form.adTimeEnd = this.form.adTime[1];
    },
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