判斷數(shù)組類型為 Array
Object.prototype.toString.call(obj) == '[object Array]'
判斷對(duì)象類型為 Object
Object.prototype.toString.call(obj) == '[object Object]'
判斷對(duì)象類型為 Number
Object.prototype.toString.call(obj) == '[object Number]'
Object.prototype.toString.call(obj) == '[object Array]'
Object.prototype.toString.call(obj) == '[object Object]'
Object.prototype.toString.call(obj) == '[object Number]'