6-12作业mark
来源：6-12 编程练习
WillTien
2018-08-29 00:14:49
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>逻辑操作符</title>
</head>
<body>
<script>
//补充代码
var x= NaN,
y= undefined,
z= 1,
m= 1,
n= "0",
j=33,
a= !(!undefined),
b= !0;
console.log(typeof(x))//number
console.log(typeof(y))//undefined
console.log(typeof(z))//number
console.log(typeof(m))//number
console.log(typeof(n))//string
console.log(typeof(j))//number
console.log(typeof(a))//boolean
console.log(typeof(b))//boolean
console.log(x || y || z);//1
console.log(m || n || j);//1
console.log(a || b);//true
console.log(!NaN);//true
console.log(!y);//true
console.log(!z);//fales
console.log(!m);//fales
console.log(!n);//fales
console.log(!j);//fales
console.log(!a);//true
console.log(!b);//fales
</script>
</body>
</html>
1回答
-
测试了你的代码,效果可以实现
继续加油!
0
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