javascript - 在静态方法递归使用的 es6 类中创建计数器变量

Question

有一个静态递归方法，我需要有一个应该声明的计数器。

请看下面的代码片段我在这里做错了什么

一个静态方法提取数据，另一个静态方法将数据格式化为正确的格式

class Method(){
  constructor(payload){
    this.data = Method.extractData(payload)
  }

  static recursiveFunction(list, object ={}, methods){
    // recursive logic at a point 
    if(condtionNotSatisfied){
      this.recursiveFunction([value])
    }else{
      // dont call recursive function
      console.log(this.counter) // giving some times 8, 24
      this.counter = this.counter + 1
    }
  }

  static extractData(payload){
    return this.recursiveFunction(payload.list, {}, payload.methods)
  }

  Method.counter = -1;

}

module.exports = Method

我如何声明一个可以在外部使用的变量recursiveFunction

感谢任何帮助

Answer 1

class Method(){
  constructor(payload){
    this.data = Method.extractData(payload)
  }

  static recursiveFunction(list, object ={}, methods){
    if (Method.counter === undefined){
       Method.counter = 0; //initialize here
    }
    // recursive logic at a point 
    if(condtionNotSatisfied){
      this.recursiveFunction([value])
    }else{
      // dont call recursive function
      console.log(Method.counter) // giving some times 8, 24
      Method.counter = Method.counter + 1
    }
  }

  static extractData(payload){
    return this.recursiveFunction(payload.list, {}, payload.methods)
  }

  Method.counter = -1;

}

module.exports = Method