Get last return value

Question

In nodeJS terminal, I can enter this expression and have as a return 'true':

> var x = true; x;
true

How can I capture this return value in a variable, without changing the expression?

The following is not working:

> var y = (var x = true; x)
SyntaxError: Unexpected token var

Answer 1

In node REPL, you can just use _ :

> var x = true; x;
true
> var y = _
undefined
> y
true