37 lines
625 B
Markdown
37 lines
625 B
Markdown
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---
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title: Use Inheritance So You Don't Repeat Yourself
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localeTitle: 使用继承，所以你不要重复自己
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---
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## 使用继承，所以你不要重复自己
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### 解
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从Cat.prototype和Bear.prototype中删除“eat”方法并将其添加到Animal.prototype中。
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```javascript
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function Cat(name) {
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this.name = name;
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};
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Cat.prototype = {
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constructor: Cat
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};
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function Bear(name) {
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this.name = name;
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};
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Bear.prototype = {
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constructor: Bear
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};
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function Animal() { };
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Animal.prototype = {
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constructor: Animal,
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eat: function() {
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console.log("nom nom nom");
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}
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};
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```
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