Hướng dẫn reverse words in javascript

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• Not the answer you're looking for? Browse other questions tagged javascript arrays string reverse or ask your own question.
• Reverse every word in a string
• How would you reverse words in a sentence using JavaScript?
• How do you reverse text in JavaScript?
• How do you reverse each word in a given string?
• Does JavaScript have a reverse function?

Nội dung chính

• Not the answer you're looking for? Browse other questions tagged javascript arrays string reverse or ask your own question.
• Reverse every word in a string
• How would you reverse words in a sentence using JavaScript?
• How do you reverse text in JavaScript?
• How do you reverse each word in a given string?
• Does JavaScript have a reverse function?

I am trying to reverse each word of a string without changing the order of the words...

this is the code I have:

  function wordsReverser[string]{
    return string.split[''].reverse[].join[''];
  }
  console.log[wordsReverser['New string, same results.']];

what I am getting for results is this: ".stluser emas ,gnirts weN"

I am looking for this: "weN gnirts... "

Here is a jsbin

StephenTG

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asked Jan 21, 2016 at 18:50

4

Try something like this.

function wordsReverser[string]{
return string.split[""].reverse[].join[""].split[" "].reverse[].join[" "]  
}

console.log[wordsReverser['New string, same results.']];

answered Jan 21, 2016 at 18:55

btavbtav

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4

Here's a JSFiddle with the solution you're looking for //jsfiddle.net/e109c4pc/

function wordsReverser[string]{
    var arr = string.split[""];
    var output = [];
    for[var i = arr.length - 1;  i >= 0; i--]{
        output.push[arr[i]];
    }
  return output.join[""];
}

answered Jan 21, 2016 at 18:55

RobertRobert

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2

Update: edited the answer to reflect the updated question

function wordsReverser[string]{
    return string.split[' '].map[function[word] { 
        return word.split[''].reverse[].join['']; 
    }].join[' '];
}
alert[wordsReverser['New string, same results.']];
// weN ,gnirts emas .stluser

And if you want to preserve the punctuation in place:

function wordsReverser[string]{
    return string.split[' '].map[function[word] { 
        var rev = word.split[''].reverse[].join[''];
        if [['.',','].indexOf[rev[0]] > -1] {
          rev = rev.slice[1] + rev[0];
        }
        return rev;
    }].join[' '];
}
alert[wordsReverser['New string, same results.']];
// weN gnirts, emas stluser.

answered Jan 21, 2016 at 18:55

Boris SerebrovBoris Serebrov

15k1 gold badge39 silver badges54 bronze badges

4

You need to split the text into separate words, and then reverse each word individually.

function wordsReverser[string]{
   var words = string.split[' '];
   var result = [];
   for[var i = 0; i < words.length; i ++]{
     result.push[words[i].split[''].reverse[].join['']];
   }  
   return result.join[' '];
}

console.log[wordsReverser['New string, same results.']];

answered Jan 21, 2016 at 18:56

Not the answer you're looking for? Browse other questions tagged javascript arrays string reverse or ask your own question.

Reverse every word in a string

We are going to write a function called reverseWords that accepts a string, str, as an argument.

You are given a string of varying word counts. The goal of the function is to reverse every word in the string and return it.

Example:

reverseWords['The quick brown fox jumps over the lazy dog.']
// output: 'ehT kciuq nworb xof spmuj revo eht yzal .god'

The first thing we are going to do is create a variable called reverseWordArr. This variable will contain our string in array form.

let reverseWordArr = str.split[" "]

Since we want to create another array but containing all the words in the string reversed, we will use the map method.

.map[word => word.split[""].reverse[].join[""]];

Here is the full variable:

let reverseWordArr = str.split[" "].map[word => word.split[""].reverse[].join[""]];

Now that we created our array and it contains all the words in the string but in reverse, we need to convert the array back to a string and return it.

return reverseWordArr.join[" "];

Here is the full function:

How would you reverse words in a sentence using JavaScript?

Reverse every word in a string.

let reverseWordArr = str.split[" "].

. map[word => word. split[""]. reverse[]. join[""]];.

let reverseWordArr = str. split[" "]. map[word => word. split[""]. reverse[]. join[""]];.

return reverseWordArr.join[" "];.

How do you reverse text in JavaScript?

Example 2: Reverse a String Using built-in Methods First, the string is split into individual array elements using the split[] method. str. split[""] gives ["h", "e", "l", "l", "o"] . The string elements are reversed using the reverse[] method.

How do you reverse each word in a given string?

Split the given inputString into words using split[] method. Then take each individual word, reverse it and append to reverseString. Finally print reverseString.

Does JavaScript have a reverse function?

JavaScript Array reverse[] The reverse[] method reverses the order of the elements in an array. The reverse[] method overwrites the original array.