<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>自增自减练习</title>
<script type="text/javascript">
var n1 = 10;
var n2 = 20;
var n = n1++;//n1 = 11 n1++=10
console.log("n="+n);//10
console.log("n1="+n1);//11
n=++n1;//++n1=n1=12; n=12
console.log("n="+n);//12
console.log("n1="+n1);//12
n = n2--;//n2=19;n2--=20
console.log("n="+n);//20
console.log("n1="+n2);//19
n=--n2;//--n2=18;n2=18
console.log("n="+n);//18
console.log("n1="+n2);//18
</script>
</head>
<body>
</body>
</html>自增自减小练习
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转载自blog.csdn.net/dayun555/article/details/84144667
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