Итераторы массива JavaScript

Question

Я делаю это упражнение и не понимаю, почему оно не работает.Кто-нибудь готов помочь?

let story = 'Last weekend, I took literally the most beautiful bike ride of my life. The route is called "The 9W to Nyack" and it actually stretches all the way from Riverside Park in Manhattan to South Nyack, New Jersey. It\'s really an adventure from beginning to end! It is a 48 mile loop and it basically took me an entire day. I stopped at Riverbank State Park to take some extremely artsy photos. It was a short stop, though, because I had a really long way left to go. After a quick photo op at the very popular Little Red Lighthouse, I began my trek across the George Washington Bridge into New Jersey.  The GW is actually very long - 4,760 feet! I was already very tired by the time I got to the other side.  An hour later, I reached Greenbrook Nature Sanctuary, an extremely beautiful park along the coast of the Hudson.  Something that was very surprising to me was that near the end of the route you actually cross back into New York! At this point, you are very close to the end.';

let overusedWords = ['really', 'very', 'basically'];

let unnecessaryWords = ['extremely', 'literally', 'actually' ];

const storyWords = story.split(' ');

console.log(storyWords.lenght);


const betterWords = storyWords.filter(word=>{
  if (word === unnecessaryWords){
    return false;
  }
  else {
    return true;
  }
});

console.log(betterWords);

Первый файл console.log должен возвращать длину, но возвращает неопределенное значение.Во втором console.log ничего не было отфильтровано.Что я делаю неправильно?Спасибо.

Answer 1

Причина отсутствия первого console.log заключается в том, что в свойстве length имеется опечатка.Вы используете lenght, что недопустимо.

Причина отсутствия секунды console.log в том, что существует массив unnecessaryWords, поэтому вам нужно использовать indexOf() (или includes()) для проверкисуществуют ли слова в этом массиве или нет:

let story = 'Last weekend, I took literally the most beautiful bike ride of my life. The route is called "The 9W to Nyack" and it actually stretches all the way from Riverside Park in Manhattan to South Nyack, New Jersey. It\'s really an adventure from beginning to end! It is a 48 mile loop and it basically took me an entire day. I stopped at Riverbank State Park to take some extremely artsy photos. It was a short stop, though, because I had a really long way left to go. After a quick photo op at the very popular Little Red Lighthouse, I began my trek across the George Washington Bridge into New Jersey.  The GW is actually very long - 4,760 feet! I was already very tired by the time I got to the other side.  An hour later, I reached Greenbrook Nature Sanctuary, an extremely beautiful park along the coast of the Hudson.  Something that was very surprising to me was that near the end of the route you actually cross back into New York! At this point, you are very close to the end.';

let overusedWords = ['really', 'very', 'basically'];

let unnecessaryWords = ['extremely', 'literally', 'actually'];

const storyWords = story.split(' ');

console.log(storyWords.length);


const betterWords = storyWords.filter(word => {
  return unnecessaryWords.indexOf(word) === -1;
});

console.log(betterWords);

Answer 2

Пожалуйста, попробуйте это ниже:

Это storyWords.length не длина;

let story = 'Last weekend, I took literally the most beautiful bike ride of my life. The route is called "The 9W to Nyack" and it actually stretches all the way from Riverside Park in Manhattan to South Nyack, New Jersey. It\'s really an adventure from beginning to end! It is a 48 mile loop and it basically took me an entire day. I stopped at Riverbank State Park to take some extremely artsy photos. It was a short stop, though, because I had a really long way left to go. After a quick photo op at the very popular Little Red Lighthouse, I began my trek across the George Washington Bridge into New Jersey.  The GW is actually very long - 4,760 feet! I was already very tired by the time I got to the other side.  An hour later, I reached Greenbrook Nature Sanctuary, an extremely beautiful park along the coast of the Hudson.  Something that was very surprising to me was that near the end of the route you actually cross back into New York! At this point, you are very close to the end.';


var storyWords = story.split(' ');

console.log(storyWords.length) // not lenght;


function betterWords(storyWords) {
  foreach(var word in storyWords) {
    if (word === unnecessaryWords) {
      return false;
    } else {
      return true;
    }
  }
}

console.log(betterWords(story));

Answer 3

Вы можете сделать что-то вроде ниже:

let story = 'Last weekend, I took literally the most beautiful bike ride of my life. The route is called "The 9W to Nyack" and it actually stretches all the way from Riverside Park in Manhattan to South Nyack, New Jersey. It\'s really an adventure from beginning to end! It is a 48 mile loop and it basically took me an entire day. I stopped at Riverbank State Park to take some extremely artsy photos. It was a short stop, though, because I had a really long way left to go. After a quick photo op at the very popular Little Red Lighthouse, I began my trek across the George Washington Bridge into New Jersey.  The GW is actually very long - 4,760 feet! I was already very tired by the time I got to the other side.  An hour later, I reached Greenbrook Nature Sanctuary, an extremely beautiful park along the coast of the Hudson.  Something that was very surprising to me was that near the end of the route you actually cross back into New York! At this point, you are very close to the end.';

let overusedWords = ['really', 'very', 'basically'];

let unnecessaryWords = ['extremely', 'literally', 'actually' ];

const storyWords = story.split(' ');

console.log(storyWords.length); // length spelling mistake


const betterWords = storyWords.filter(word=>{
  if (unnecessaryWords.includes(word)){ // check words in the array like that
    return false;
  }
  else {
    return true;
  }
});

console.log(betterWords);