常见数据类型
boolean; number; string; object; undefined
代码示例
常见数据类型
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript">
function f() {
}
var s = "";
s+="typeof true: "+typeof true+"
"
s+="typeof 3.3: "+typeof 3+"
"
s+="typeof 'hello': "+typeof 'hello'+"
"
s+="typeof f : "+typeof f+"
";
s+="typeof new Array(1,2,): "+typeof new Array(1,2)+"
"
s+="typeof [1,3]: "+typeof [1,3]+"
"
s+="typeof null: "+typeof null+"
"
s+="typeof undefined: "+typeof undefined+"
"
console.log(s)
/*结果如下：
typeof true: boolean
typeof 3.3: number
typeof 'hello': string
typeof f : function
typeof new Array(1,2,): object
typeof [1,3]: object
typeof null: object
typeof undefined: undefined*/
</script>
</head>
<body>
</body>
</html>