javascript - JS从类中调用静态方法

Question

我有一个带有静态方法的类:

class User {
  constructor() {
    User.staticMethod();
  }

  static staticMethod() {}
}

静态方法是否有与此等效的方法(即引用没有实例的当前类)？

this.staticMethod()

所以我不必写类名:“User”。

Answer 1

来自 MDN 文档

Static method calls are made directly on the class and are not callable on instances of the class. Static methods are often used to create utility functions.

更多请参见=> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/static

你可以这样做 => this.constructor.staticMethod(); 调用静态方法。

class StaticMethodCall {
  constructor() {
    console.log(StaticMethodCall.staticMethod()); 
    // 'static method has been called.' 

    console.log(this.constructor.staticMethod()); 
    // 'static method has been called.' 
  }

  static staticMethod() {
    return 'static method has been called.';
  }
}