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你好,
首先不好意思,没仔细看你的代码。
然后,给你一个我的解决方案:
function reverseString(str) {// 去除前后空格
str = str.replace(/(^\s+)|(\s+$)/g, '')
str = str.split('').reverse().join('')
return str
}
var str = 'abcdef'
console.log('原:' + str) // abcdef
console.log('新:' + reverseString(str)) // fedcba
希望是你想要的答案,如有疑问可追问。