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30 lines
490 B
JavaScript
30 lines
490 B
JavaScript
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// 父类
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class Animal {
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constructor(name) {
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this.name = name;
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}
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speak() {
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return "some animal sound";
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}
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}
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// 子类
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class Dog extends Animal {
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speak() {
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return this.name +": Woof!";
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}
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}
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// 子类
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class Cat extends Animal {
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speak() {
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return this.name +": Meow!";
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}
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}
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// 使用
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let dog = new Dog("阿狗");
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let cat = new Cat("阿猫");
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console.log(dog.speak()); // 输出: Woof!
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console.log(cat.speak()); // 输出: Meow!
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