Incremento pós -fix e prefixo em javascript
++x : x is now 2
++x + : 2 +
++x + x : 2 + 2
++x + x++ : 2 + 2 and x is now 3
++x + x++ * : 2 + 2 *
++x + x++ * x : 2 + 2 * 3
Puzzled Piranha