在有些情况下,一个功能在基础功能上是不会变的,算法的基本骨架也是确定的,但是在某些场景下算法的具体实现有些差异。应对这种问题,可以采用模板方法模式:
abstract class Salary{
abstract ComputeBaseSalary():void;
abstract ComputeDecuteSalary():void;
abstract ComputeBonusSalary():void;
//定义了通用实现与算法骨架,具体实现在子类中有差别
ComputeSalary():void{
console.log("开始计算工资");
this.ComputeBaseSalary();
this.ComputeDecuteSalary();
this.ComputeBonusSalary();
}
}
class ITSalary extends Salary{
ComputeBaseSalary():void{
console.log("IT基本工资");
}
ComputeDecuteSalary():void{
console.log("IT没有提成");
}
ComputeBonusSalary():void{
console.log("IT奖金");
}
}
class SalesSalary extends Salary{
ComputeBaseSalary():void{
console.log("Sales基本工资");
}
ComputeDecuteSalary():void{
console.log("Sales提成");
}
ComputeBonusSalary():void{
console.log("Sales没有奖金");
}
}
var itsalary=new ITSalary();
itsalary.ComputeSalary();
var salessalary=new SalesSalary();
salessalary.ComputeSalary();