//without ln#12, Let's say:

var b=new B;

//then

b.constructor === B; //not true; so this is pervert in that b is CONSTRUCTED by B and b.constructor shall be B


【 在 xiatianup (李 ，只是期待夏天！！) 的大作中提到: 】
: 谢谢，已经认真看了（英文不好，反复看。。。）
: and if you changes B's prototype to C, you should set C's own property "constructor" to B.
: 意思就是继承自哪个，就把B的constructor指向被继承的对象吧。
: ...................
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