After a major upgrade to Brazil, is it safe to use ?., ??, and class in server scripts? The official release notes only state ...
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super 关键字是 ES6 引入的,专门服务于 class 继承和对象方法。它能做什么?一句话概括: 在子类中访问父类的构造函数或原型方法。适合谁?所有写 React 类组件、写 TypeScript 继承体系、或者维护老项目里 class 代码的前端同学。很多人对它的理解停留在“调用父类构造函数”,但一旦遇到 super.method ...