Reading the specs, it becomes clear that all vars are instantiated
before execution (Matt said parsed, but to avoid doubt their values
aren't evaluated).
Thus:
function() {
myVar = 5;
var myVar = 6;
}
is the equivalent of:
function() {
var myVar;
myVar = 5;
myVar = 6;
}
is valid, and keeps myVar in the function scope.
Could lead to some very obtuse code!
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