如何从另一个类调用javascript类并在该类所在的数组中推送（追加）值？

我有以下两个javascript类：FormsHolder和AdditionalValues。我想在Additional values类中遍历数组，并将它们附加到FormsHolder类中的formData中

我已经简化了这个问题，使它可以理解，但逻辑正是我需要解决的

class FormsHolder{
  assembleForms(){    
    const formdata = new FormData;    
  }        
}

class AdditionalValues{    
  arrayValues(){
    const arrys = [1,2,3,4];    
    for (const arry of arrys) {
      // i want to push(append) this array to the formdata array(object) in the FormsHolder class    
    }    
  }
}

您可以将formdata定义为全局变量，如下所示：

var formdata;

class FormsHolder{
  assembleForms(){
    formdata = new FormData;
  }
}

class AdditionalValues{
  arrayValues(){
    const arrys = [1,2,3,4];

    // creating FormData object
    new FormsHolder().assembleForms();

    for (const arry of arrys) {
      formdata.append('item', arry);
    }
  }
}

new AdditionalValues().arrayValues();

或者您可以定义推断为FormsHolder类的附加值类：

---

t如果FormsHolder接受这样一个类FormHolder{constructorformValues{this.formValues=new FormDataformValues；}的参数，会怎么样

class FormsHolder{
  assembleForms(){
    this.formdata = new FormData;
  }
}

class AdditionalValues extends FormsHolder {
  arrayValues(){
    const arrys = [1,2,3,4];

    // creating FormData object
    super.assembleForms();

    for (const arry of arrys) {
      this.formdata.append('item', arry);
    }
  }
}

new AdditionalValues().arrayValues();