Object

[xgqfrms]

Object

Object.is()

https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object/is

Object.prototype.toString.call()

Object.prototype.toString.call(NaN)
"[object Number]"
Object.prototype.toString.call(undefined)
"[object Undefined]"
Object.prototype.toString.call(true)
"[object Boolean]"
Object.prototype.toString.call({})
"[object Object]"
Object.prototype.toString.call(func)
"[object Function]"
Object.prototype.toString.call(obj)
"[object Object]"
Object.prototype.toString.call(Symbol())
"[object Symbol]"
Object.prototype.toString.call(null)
"[object Null]"
Object.prototype.toString.call(123)
"[object Number]"
Object.prototype.toString.call(BigInt(1n))
"[object BigInt]"

https://www.cnblogs.com/xgqfrms/p/13054867.html

[xgqfrms]

https://www.cnblogs.com/xgqfrms/p/13411298.html