js class 类方法
    英文回答:
    In JavaScript, class methods are functions that are defined inside a class and can be called on instances of that class. They are used to perform specific actions or operations related to the class.
    To define a class method, you can use the `static` keyword before the method name. This indicates that the method belongs to the class itself, rather than to individual instances of the class. Here's an example:
    javascript.
    class Car {。
      constructor(brand) {。
        this.brand = brand;
      }。
      static getInfo() {。
        return "This is a car class";
      }。
    }。
    console.Info()); // Output: "This is a car class"
    const myCar = new Car("Toyota");
    console.Info()); // Output: TypeError: Info is not a function.
    In the example above, the `getInfo` method is defined as a class method using the `static` keyword. It can be called directly on the `Car` class itself, but not on individual instances of the class.
js调用方法的三种写法
    Class methods are useful when you want to define utility functions or operations that are not specific to individual instances of the class. They can be accessed without the need to create an instance of the class.
    中文回答:
    在JavaScript中,类方法是在类内部定义的函数,可以在该类的实例上调用。它们用于执行与类相关的特定操作或操作。
    要定义一个类方法,可以在方法名之前使用`static`关键字。这表示该方法属于类本身,而不是类的各个实例。以下是一个例子:
    javascript.
    class Car {。
      constructor(brand) {。
        this.brand = brand;
      }。
      static getInfo() {。
        return "This is a car class";
      }。
    }。
    console.Info()); // 输出: "This is a car class"
    const myCar = new Car("Toyota");
    console.Info()); // 输出: TypeError: Info is not a function.
    在上面的例子中,`getInfo`方法被定义为一个类方法,使用了`static`关键字。它可以直接在`Car`类本身上调用,但不能在类的各个实例上调用。
    类方法在你想要定义与类的各个实例无关的实用函数或操作时非常有用。可以在不创建类
的实例的情况下访问它们。

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