18-TypeScript模板方法模式

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();

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