klass.superclass = parent; klass.subclasses = []; //如果創(chuàng)建類時(shí)指定了父對(duì)象,則把klass的原型指向父對(duì)象的實(shí)例,實(shí)現(xiàn)原型鏈繼承 if (parent) { subclass.prototype = parent.prototype; klass.prototype = new subclass; //為父類添加子類,維護(hù)父類的子類集合 ...
www.dbjr.com.cn/article/192...htm 2025-6-9