function A(name,age) { var o = new Object() o.name = name o.age = age o.sayName = function () { alert(this.name) } return o}var A1 = new A('qwe',18)console.log(A1 instanceof A); //不是A的實(shí)例嗎？console.log(A1 instanceof Object);function B(name,age) { this.name = name this.age = age}var B1 = new B('asd', 12)console.log(B1 instanceof B);console.log(B1 instanceof Object);請(qǐng)問(wèn)從哪體現(xiàn)呢？
js工廠模式的無(wú)法識(shí)別對(duì)象類型與構(gòu)造函數(shù)在哪體現(xiàn)？
蝴蝶刀刀
2019-03-07 18:20:22
