title: The shortest path between two addresses
body: <p>Using google map, you can actually get the different possible routes between two addresses, also you get the length of every possible route. </p>
  
  <p><img src="https://i.stack.imgur.com/WqKdv.png" alt="enter image description here">
  I'm now working on a website with  <code>google map</code>, i want to calculate the shortest path between two different addresses same as google map does. then get the path length back as javascript variable.</p>