If you save an app to the home screen on an iOS device, you can display a nice splash screen when it launches. But what if the user switches to a different app, then returns to yours? It will have quit and needs to launch again.
You can save the current state to localStorage and write some code to go right back to where you were: but the splash screen will show again. You can suppress it by adding these lines to your restart code:
Dim headerChildren=document.getElementsByTagName("head").children Dim i=0 Do While i<UBound(headerChildren) And headerChildren[i].rel<>"apple-touch-startup-image" i=i+1 Loop document.getElementsByTagName("head").removeChild(headerChildren[i])
This code finds the splash screen in the header of the page and removes it.