<script><br /> vara = 10;<br /> ++a; //++a-->11 a = 11<br /> varb = ++a + 2; //++a-->12 a = 12<br /> console.log(b); //-->14<br /> varc = 10;<br /> c++; //c++-->11<br /> vard = c++ + 2; //11 + 2 然后c = 12<br /> console.log(d); //-->13<br /> vare = 10;<br /> varf = e++ + ++e; //10 + 12<br /> console.log(f); //22<br /> </script>
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