javascript - 如何确定一个javascript对象是简单的还是复杂的？

Question

基本上我需要区分以下两个:

var simple = 5 // or "word", or 56.78, or any other "simple" object
var complex = {propname: "propvalue", "otherprop": "othervalue"}

Answer 1

使用 typeof 运算符，您可以确定以下内容:

"number"        Operand is a number
"string"        Operand is a string
"boolean"       Operand is a Boolean
"object"        Operand is an object
"undefined"     Operand is not defined.

已编辑: 正如评论中所建议的那样，您可能还想检查值是否为空，因为 typeof null 将返回对象。