How to hide Safari Mobile browser bottom button bar in iPhone?

Question

Following is head section:

Answer 1

You cannot programmatically hide the toolbar in Mobile Safari.

Your users need to add your web app to their home screens in order for the bars to be hidden when they next launch your app by tapping its icon. This is done by tapping the middle button in the toolbar, then choosing Add to Home Screen. You may need to display a message informing your users to do this.