abstract?class?Baverage
{
condiments:?boolean;
constructor(condiments:?boolean)
{
this.condiments?=?condiments;
this.BoilWater();
this.Brew();
this.PourInCup();
if?(this.condiments)
{
this.AddCondiments();
}
}
public?abstract?BoilWater():?void;
public?abstract?Brew():?void;
public?abstract?PourInCup():?void;
public?abstract?AddCondiments():?void;
}
class?Coffee?extends?Baverage
{
constructor(condiments:boolean)
{
super(condiments);
}
public?BoilWater()
{
console.log("把水煮沸");
}
public?Brew()
{
console.log("用沸水沖泡咖啡");
}
public?PourInCup()
{
console.log("把咖啡倒進杯子");
}
public?AddCondiments()
{
console.log("加糖和牛奶");
}
}
$(function()
{
let?coffee1:?Baverage?=?new?Coffee(true);
let?coffee2:?Baverage?=?new?Coffee(false);
})

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