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Replacing vowels with their 1-based index in a string in JavaScript
Problem
We are required to write a JavaScript function that takes in a string and replaces all occurrences of the vowels in the string with their index in the string (1-based).
It means if the second letter of the string is a vowel, it should be replaced by 2.
Example
Following is the code −
const str = 'cancotainsomevowels';
const replaceVowels = (str = '') => {
const vowels = 'aeiou';
let res = '';
for(let i = 0; i < str.length; i++){
const el = str[i];
if(vowels.includes(el)){
res += (i + 1);
}else{
res += el;
};
};
return res;
};
console.log(replaceVowels(str));Output
Following is the console output −
c2nc5t78ns11m13v15w17ls
Updated on: 19-Apr-2021
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