By using replace and regex: I have captured c, but I want to set it at the end of osonant plus “ay” with replace in Javascript

问题

Here is he link: https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/pig-latin.

By using replace and regex: I have captured c, but I want to set it at the end of onsonant plus ay using the replace function in JavaScript

Here is my code:

function translatePigLatin(str) {

  let regEx=/([bcd-fgh-klmn-pqrst-vwxyz])/i

  console.log(str.replace(regEx, '$1,'))


}

translatePigLatin("consonant");

回答1:

See if that's what you want

function translatePigLatin(str) {   
  let regx = /(.*?)([^aeiou])(.*)/i
  console.log(str.replace(regx, '$1$3ay$2'))
} 
  
translatePigLatin("consonant")

// output onsonantayc

Your question is a bit vague, if not add more information in the comments

@Edited

回答2:

Pig Latin is a way of altering English Words. The rules are as follows:

• If a word begins with a consonant, take the first consonant or consonant cluster, move it to the end of the word, and add "ay" to it.

• If a word begins with a vowel, just add "way" at the end.

A possible solution:

function translatePigLatin(str) {
    if (!/[aeiou]/.test(str)) { // if it does not contain vowels
        return str + "ay";
    } else if (/^[aeiou]/.test(str)) { // if it starts with a vowel
        return str + "way";
    } else { // if it starts with a consonant and has vowels
        let regx = /(.*?)([aeiou])(.*)/i;
        return str.replace(regx, "$2$3$1ay");
    }
}

console.log(translatePigLatin("pig")); // igpay
console.log(translatePigLatin("rythm")); // rythmay
console.log(translatePigLatin("consonant")); // onsonantcay

The regular expression /(.*?)([aeiou])(.*)/i means:

(.*?) match as minimum characters as possible

([aeiou]) followed by a vowel and

(.*) followed by the rest of the string.

By usinig the parenthesis, we are creating backreferences $1, $2, $3 that will store each of these values for later use with the replace method.

来源：https://stackoverflow.com/questions/61448161/by-using-replace-and-regex-i-have-captured-c-but-i-want-to-set-it-at-the-end-o