Question

    function reverseInPlace(str) {
        var words = [];
        words = str.split("\s+");
        var result = "";
        for (var i = 0; i < words.length; i++) {
            return result += words[i].split('').reverse().join('');
        }
    }
    console.log(reverseInPlace("abd fhe kdj"))

我期待的是“dba ehf jdk”，而我在这里得到的是jdk fhe dba，我想知道这是什么问题

Answer 1

你需要按空格分割字符串

＆＃13;

function reverseInPlace(str) {
  var words = [];
  words = str.match(/\S+/g);
  var result = "";
  for (var i = 0; i < words.length; i++) {
     result += words[i].split('').reverse().join('') + " ";
  }
  return result
}
console.log(reverseInPlace("abd fhe kdj"))

＆＃13;

Answer 2

Split在翻转单个单词之前首先将字符串转换为单词

var input = "abd fhe kdj";
var output = input.split( " " ).map(  //split into words and iterate via map
     s => s.split("").reverse().join( "" )  //split individual words into characters and then reverse the array of character and join it back
).join( " " ); //join the individual words

Answer 3

您可以使用split和map功能来创建反向词。

您需要首先使用sentence拆分space，然后您可以反转每个单词并再次加入反转的单词。

function reverseWord (sentence) {
  return sentence.split(' ').map(function(word) {
    return word.split('').reverse().join('');
  }).join(' ');
}

console.log(reverseWord("abd fhe kdj"));

Answer 4

此功能适用于您：

function myFunction(string) {
    return string.split("").reverse().join("").split(" ").reverse().join(" ")
};

Answer 5

如果您看起来像这样o / p：“ Javascript is Best” =>“ Best is Javascript”

然后可以通过简单的逻辑完成

//sample string
     let str1 = "Javascript is Best";
//breaking into array
     let str1WordArr = str1.split(" ");
//temp array to hold the reverse string      
      let reverseWord=[];
//can iterate the loop backward      
     for(let i=(str1WordArr.length)-1;i>=0;i--)
     {
//pushing the reverse of words into new array
          reverseWord.push(str1WordArr[i]); 
     }
//join the words array 
      console.log(reverseWord.join(" ")); //Best is Javascript

Answer 6

此解决方案保留空格字符空格␣，制表符\t，换行符\n和回车符\r）和也保留其顺序（不可逆）：

const sentence = "abd\t fhe kdj";

function reverseWords(sentence) {
    return sentence
        .split(/(\s+)/)
        .map(word => /^\s+$/.test(word) ? word : word.split('').reverse().join(''))
        .join('');
}

console.log(reverseWords(sentence));

Answer 7

If you want to reverse a string by word:
Example: 'Welcome to JavaScript' to 'JavaScript to Welcome'

You can also do something like:
var str = 'Welcome to JavaScript'
function reverseByWord(s){
  return s.split(" ").reverse().join(" ");
}

// Note: There is space in split() and Join() method

reverseByWord(str)
// output will be - JavaScript to Welcome

Answer 8

您可以通过以下代码轻松实现

function reverseWords(str) {
    // Go for it
    let reversed;
    let newArray=[];
    reversed = str.split(" ");
    for(var i = 0;i<reversed.length; i++)
    {
        newArray.push(reversed[i].split("").reverse().join(""));       
    }
    return newArray.join(" ");
}
let reversedString = reverseWords("This is an example!");
console.log("This is the reversed string : ",reversedString);

Javascript：如何反转字符串中的单词而不是反转整个字符串？

8 个答案: