从for循环内的函数输出创建一个数组[重复]

Question

我想通过使用 for 循环函数来获取数组 split_Sentence 中所有出现的 "they" 和 "some" 的位置。然后我想从 for 循环函数的输出构建一个数组。但问题是，每当我使用indexOf() 查找位置时，它总是给出第一次出现的位置。我不知道如何从 for 循环的输出中创建一个数组。
谁能帮助我，我将不胜感激。

var Sentence = "some warriors know when they are defeated, whether some of them are too stubborn to accept it and they are the one who die. "
var split_Sentence = Sentence.split(" ")
/* function() ==> then sort an array listing all its output*/

Expected outcome: final array should be like this array= (0,4,8,18) 

如果你不明白我的问题，请尽管问我

Answer 1

注意：根据需要处理大写小写。

const Sentence = "some warriors know when they are defeated, whether some of them are too stubborn to accept it and they are the one who die.";
const arrayOfIndex = Sentence
  .split(" ")
  .map((word, index) => word === "some" || word === "they" ? index : false)
  .filter(x => x !== false);
console.log({arrayOfIndex});