Be urgent!!!!!! Recently doing project, the customer requirements in the h5 page to start the phone APP, to determine in advance whether installed the APP, checked the online, mostly to do with a timeout, but the question now is whether the ios side when the APP will bring up a prompt box, if don't, will continue to exist, this time the timeout does not work, and, when not installed APP will pop up a tip address is invalid, hope the great god of all stripes help to solve it, urgent!!!!!! Appreciate!!!!!!