JavaScript 函数：反转五个字母以上单词

function reverseWords(str) { let words = str.split(' '); for(let i = 0; i < words.length; i++) { if(words[i].length >= 5) { words[i] = words[i].split('').reverse().join(''); } } return words.join(' '); }

// 示例 reverseWords('Hello world'); // 'Hello dlrow' reverseWords('This is a test'); // 'This is a tset' reverseWords('Welcome to the jungle'); // 'emocleW to the elgnuj'