修复bug

property-uniapp-project/pageSubPack/online-repair/personalRepair.vue

@@ -169,8 +169,21 @@ const form = ref({
 
 // ========== 基础数据 ==========
 const timePopupRef = ref(null)
-const selectedTime = ref('')
-const tempTime = ref(moment().hour(9).minute(30).second(0))
+
+// 默认预约时间：今天（向上取整到下一个整点/半点）
+const getDefaultTime = () => {
+  const t = moment().second(0).millisecond(0)
+  if (t.minute() > 30) {
+    t.add(1, 'hour').minute(0)
+  } else if (t.minute() > 0) {
+    t.minute(30)
+  }
+  return t
+}
+
+const selectedTime = ref(getDefaultTime())
+const tempTime = ref(getDefaultTime())
+form.value.datetime = selectedTime.value.format('YYYY-MM-DD HH:mm')
 
 // ========== 时间选择列数据 ==========
 const dateList = ref([
@@ -191,12 +204,15 @@ const minuteList = ref([
 ])
 
 // ========== 选中状态 ==========
-const selectedDate = ref('')
-const selectedHour = ref('')
-const selectedMinute = ref('')
+const selectedDate = ref(selectedTime.value.format('YYYY-MM-DD'))
+const selectedHour = ref(selectedTime.value.format('HH'))
+const selectedMinute = ref(selectedTime.value.format('mm'))
 
 // ========== 滚动配置 ==========
-const itemHeight = 80
+// 每项高度 / 可视高度（rpx 转 px，避免直接用数字导致滚动错位）
+const itemHeight = uni.upx2px(80)
+const visibleHeight = uni.upx2px(400)
+const centerOffset = (visibleHeight - itemHeight) / 2
 const dateScrollTop = ref(0)
 const hourScrollTop = ref(0)
 const minuteScrollTop = ref(0)
@@ -242,10 +258,11 @@ const syncScrollPosition = () => {
   const dateIdx = dateList.value.findIndex(i => i.value === selectedDate.value)
   const hourIdx = hourList.value.findIndex(i => i.time === selectedHour.value)
   const minIdx = minuteList.value.findIndex(i => i.minute === selectedMinute.value)
-  
-  dateScrollTop.value = dateIdx * itemHeight
-  hourScrollTop.value = hourIdx * itemHeight
-  minuteScrollTop.value = minIdx * itemHeight
+
+  // 让选中项滚动到可视区域居中位置，并限制不小于 0
+  dateScrollTop.value = dateIdx >= 0 ? Math.max(0, dateIdx * itemHeight - centerOffset) : 0
+  hourScrollTop.value = hourIdx >= 0 ? Math.max(0, hourIdx * itemHeight - centerOffset) : 0
+  minuteScrollTop.value = minIdx >= 0 ? Math.max(0, minIdx * itemHeight - centerOffset) : 0
 }
 
 // 点击选择日期