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Assign variables

A variable can be assigned the value of another variable.
var name1 = 'Olga';
var name2 = name1;
name1 = 'Clara';
In the second line, name2 is assigned the value of name1. The variable name2 gets the value 'Olga'. This value is retained by name2, even if name1 receives a new value afterwards.


Which value does x have after execution of the following code?
var x = 'Laurel';
var y = 'Hardy';
var z = y;
y = x;
x = z;