在静态方法递归使用的es6类中创建计数器变量

    
      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
</code>