What is the advantage of initializing multiple javascript variables with the same var keyword?

Question

When I read javascript code that is clean and written by people who are obviously very good at it, I often see this pattern

var x = some.initialization.metho         


        

Answer 1

The only real advantage is that it saves a couple of bytes per variable, which in a large JS file can add up; remember that JS files are often sent over the wire.

Personally I much prefer a single var per line.