try using the onchange event directly

the problem is very simple, but also because I am inexperienced. The angularjs framework is on the mobile side, and its date components and ng-change execution time are different on Android and iOS. Android executes ng-change events when you click OK, and ios executes ng-change events when you click on the component, so you only need to change it to ios executing events in blur state.
the specific method is

<input type="date" id="beginDate" name="beginDate" ng-model="beginDate"
              placeholder="yyyy-MM-dd" ng-change="dosth()" ng-blur="dosth2()" required />

determine whether it is Android or ios, in the dosth and dosth2 methods and then execute the corresponding event.
of course, the best and recommended method is to encapsulate it into an instruction. I won't talk about it here, but you can talk to me in private if necessary.