Better js declaration with single var

gistfile1.js

/*
In http://dropshado.ws/post/17210606192/varry-var-var Dave DeSandro declares that he is going to go to 1 var per variable. His reasons inclue:

* Easier to add more variables, no need to change any trailing comma or semi-colon.
* Eliminates unnecessary git commit diffs, where a line has changed only because you changed a trailing semi-colon or comma.
* Easier to read (IMO). var is a reserved keyword, so it jumps out when syntax highlighted.
* Eliminates awkward tab spacing underneath the var. It only lines up if your tabs are 4 spaces wide.
* [Per JFSIII] Helps collaboration, other devs might miss the change of semi-colon and accidentally add a global variable.

The following format resolves 3 of the 5 issues (but everyone knows that real JS is written using spaces not tabs. 

The third item is a two edged sword. If you have only one var block in each scope, vars are going to be relatively rare, making it easy to spot when someone drops a var in the middle of the code. In the end, its six of one, half dozen of the other.
*/

var firstName = 'Ryan'
  , lastName = 'Gosling'
  , age = 31
  , isAlive = true
;

/*
After the first variable, no need to worry about semi-colons or commas. If you really want more visibility on the ; add a comment
*/


var firstName = 'Ryan'
  , lastName = 'Gosling'
  , age = 31
  , isAlive = true
; //var