EcmaScript语法

Question

与EcmaScript有关的问题：

const firstArg = 'myArg';
this._myFunction(firstArg)
  .then((asyncResponse) => this._secondMethod(asyncResponse))
  .then((asyncSecondResponse, asyncResponse) => 
   this._thirdMethod(asyncSecondResponse, asyncResponse))
  .then(() => this._lastMethod());

问题是:如何传递给_thirdMethod 2参数(一个来自this._secondMethod(asyncResponse))，给出一个参数，第二个只是前一个asyncResponse) --我不想在_secondMethod(asyncResponse)中定义它来返回这两个参数，只想在我前面写的管道中这样做

它有语法吗？

Answer 1

您还可以嵌套第二个“然后”以将第一个asyncResponse保留在作用域中。

this._myFunction(firstArg)
    .then((asyncResponse) => this._secondMethod(asyncResponse)
    .then((asyncSecondResponse) => this._thirdMethod(asyncSecondResponse, asyncResponse)))
    .then(() => this._lastMethod());
  }