Question

我们可以在运行时在javascript中将属性与对象关联起来就像我们在C＃中做的那样。喜欢

class abc
{
a =1;
b=2;
}

abc obj;

obj.a // is right
//but can we do 
obj.c //.......... by any mean

Answer 1

function abc(){
    this.a = 1;
    this.b = 2;
}
var obj = new abc();
var obj2 = new abc();
obj.c = "something"; // will affect only this instance
obj2.prototype.d = "something else"; // this will influence all abc instances
alert(obj.d);

Answer 2

是的，你可以在JS中做到这一点。然而，新属性'c'仅对该类的特定实例有效。

JS中的扩展属性？

2 个答案: