JavaScript: Convert last character of each word to uppercase

Jan 20, 2022 · 1 min read · function changeLastCharacterToUpperCase (str) { return str.split(" ").map( (item) => { return item.slice(0, -1) + item[item.length - 1].toUpperCase(); }).join (" "); } console.log(changeLastCharacterToUpperCase('hello world welcome testing a...