Using the click and MouseOver on the iOS browser app is not recommended

Safari on iOS also supports traditional interactive events like Click and MouseOver, but it's not recommended to use Click and mouseover on iOS browser apps, because these two events are designed to support mouse clicks. The Click event has a delay of about half a second on iOS because iOS wants to highlight the element that receives the click. Events such as Mouseover/out are triggered by the click of a finger. Therefore, on iOS, you should discard the traditional interactive event model and accept a new event model. Touch events and more advanced gesture events allow your Web pages to interact like native apps.

Using the click and MouseOver on the iOS browser app is not recommended