Merge pull request #945 from dcloudio/fix-datetimepicker-range

fix：修复uni-datetime-picker在datetimerange下选择日期不正确的bug  (question/197442)

Author: GRCmade

uni_modules/uni-datetime-picker/components/uni-datetime-picker/uni-datetime-picker.vue

@@ -698,11 +698,11 @@
 						startString = getDateTime(this.start, this.hideSecond)
 					}
 					[startDate, startTime] = startString.split(' ')
-					if (this.start && !dateCompare(this.start, this.tempRange.startDate)) {
+					if (this.start && !dateCompare(this.start, `${this.tempRange.startDate} ${this.tempRange.startTime}`)) {
 						startDateLaterRangeStartDate = true
 						this.tempRange.startDate = startDate
 					}
-					if (this.start && !dateCompare(this.start, this.tempRange.endDate)) {
+					if (this.start && !dateCompare(this.start, `${this.tempRange.endDate} ${this.tempRange.endTime}`)) {
 						startDateLaterRangeEndDate = true
 						this.tempRange.endDate = startDate
 					}
@@ -717,11 +717,11 @@
 					}
 					[endDate, endTime] = endString.split(' ')
 
-					if (this.end && !dateCompare(this.tempRange.startDate, this.end)) {
+					if (this.end && !dateCompare(`${this.tempRange.startDate} ${this.tempRange.startTime}`, this.end)) {
 						endDateEarlierRangeStartDate = true
 						this.tempRange.startDate = endDate
 					}
-					if (this.end && !dateCompare(this.tempRange.endDate, this.end)) {
+					if (this.end && !dateCompare(`${this.tempRange.endDate} ${this.tempRange.endTime}`, this.end)) {
 						endDateEarlierRangeEndDate = true
 						this.tempRange.endDate = endDate
 					}