检查字符串的最后一个字符是否是 Javascript 中的元音

Question

I'm trying to make a beginner program that returns true if an inputted string ends with a vowel and false if not, but am having issues given endsWith() only allows to do one letter at a time. messing around with if else options today didn't help me much and after a couple hours on one problem i'm ready for some help lol

here's what i have so far:

console.log(x.endsWith("e"));
console.log(x.endsWith("i"));
console.log(x.endsWith("o"));
console.log(x.endsWith("u"));```

any help is appreciated thanks so much. we're supposed to have just one boolean value show up and I'm stumped

Answer 1

Just iterate through the vowels:

function endsVowel(str){
    for (let i of "aeiou"){
        if (str.endsWith(i)){
            return true;
        }
    }
    return false;
}

Answer 2

But am having issues given endsWith() only allows to do one letter at a time

So you should check the last char belongs to vowels - 'u', 'e', 'o', 'a', 'i' or not in this way.

 const vowels = ['u', 'e', 'o', 'a', 'i']; const isVowelAtLastCharacter = (str) => { const lastChar = str.charAt(str.length - 1); return vowels.includes(lastChar); } console.log(isVowelAtLastCharacter("xu")); console.log(isVowelAtLastCharacter("xe")); console.log(isVowelAtLastCharacter("xo")); console.log(isVowelAtLastCharacter("xa")); console.log(isVowelAtLastCharacter("xi")); console.log(isVowelAtLastCharacter("xz"));

Answer 3

const isEndsWithVowel=(s)=>{ 
    const vowelSet= new Set(['a','e','i','o','u']);

    return vowelSet.has(s[s.length-1]);
}

Answer 4

you can follow this code, I hope can help you, after review of Phong

let word_to_review = "California";

function reverseArray(arr) {
  var newArray = [];
  for (var i = arr.length - 1; i >= 0; i--) {
    newArray.push(arr[i]);
  }
  return newArray;
}

const getLastItem = reverseArray(word_to_review)[0];

let isVowel;
if (
  getLastItem === "a" ||
  getLastItem === "e" ||
  getLastItem === "i" ||
  getLastItem === "o" ||
  getLastItem === "u"
) {
  isVowel = true;      
} else {
  isVowel = false;
  
}

console.log(
  "is the last letter is vowel, yes or no ? The answer is.... " + isVowel
);

Answer 5

Another possible solution -

let x = "India"
const vowels = ['a','e','i','o','u']; //add capital letters too if string has capital letters

if(vowels.includes(x[x.length-1])){
   console.log('string ends with vowel', x);
}