What are available solutions of a browser / mobile phone detection

Question

I am creating a phonegap application for various mobile platforms and I was wondering what is a current best solution of browser/mobile phone detection?

Should I go

Answer 1

This may not be the best solution but i use this function for my personal use in javascript.

By the way @Gajotres thanks for deep and useful information.

function mobilMi()
{
  if( navigator.userAgent.match(/Android/i) ||
   navigator.userAgent.match(/webOS/i) ||
   navigator.userAgent.match(/iPhone/i) ||
   navigator.userAgent.match(/iPod/i)||
   navigator.userAgent.match(/iPad/i)
   ){
    return 1;
  }
  else
   return 0;
}