JavaScript实现继承---extend函数
/* Extend Function */function extend(subClass,superClass){var Func = function(){} ;Func.prototype = superClass.prototype ;subClass.prototype = new Func() ;subClass.prototype.constructor = subClass ;} ;/*-----Example-----*//* Class Person */function Person(name){this.name = name ;} ;Person.prototype.getName = function(){return this.name ;} ;/* Class Author */function Author(name,books){Person.call(this,name) ;this.books = books ;} ;extend(Author,Person) ;Author.prototype.getBooks = function(){return this.books ;} ;
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