JavaScript实现《大话设计模式》样例一 —— 工厂模式

Posted 2022-09-21 man-dream-necessary

// 工厂模式(Factory Pattern)

let operationFactory = 
    createOperate (operate) 
        let oper = null
        switch (operate) 
            case ‘+‘:
                oper = new operationFactory.OperationAdd()
                break
            case ‘-‘:
                oper = new operationFactory.OperationSub()
                break
            case ‘*‘:
                oper = new operationFactory.OperationMul()
                break
            case ‘/‘:
                oper = new operationFactory.OperationDiv()
                break
        
    ,
    OperationAdd () 
        // TODO run the addition operation
    ,
    OperationSub () 
        // TODO run the subtraction operation
    ,
    OperationMul () 
        // TODO run the multiplication operation
    ,
    OperationDiv () 
        // TODO run the division operation
    

 Git地址：https://github.com/skillnull/Design-Mode-Example