JavaScript: Alphabetize a given string

Last update on July 17 2025 12:57:18 (UTC/GMT +8 hours)

JavaScript String: Exercise-25 with Solution

Alphabetize String

Write a JavaScript function to alphabetize a given string.

Alphabetize string : An individual string can be alphabetized. This rearranges the letters so they are sorted A to Z.
Test Data:
console.log(alphabetize_string('United States'));
Output:
"SUadeeinsttt"

Visual Presentation:

Sample Solution:

JavaScript Code:

// Function to alphabetize a string
function alphabetize_string(str) 
{
    // Split the string into an array of characters, sort them alphabetically, then join them back into a string
    return str.split('').sort().join('').trim();
}

// Output the result of alphabetizing the string 'United States'
console.log(alphabetize_string('United States'));

Output:

SUadeeinsttt

Explanation:

The above JavaScript code defines a function called "alphabetize_string()" that takes a string ('str') as input and returns the string with its characters sorted alphabetically. Here's a breakdown of what each part does:

str.split(''): Splits the input string into an array of characters.
.sort(): Sorts the array of characters alphabetically.
.join(''): Joins the sorted array back into a string.
.trim(): Removes any leading or trailing whitespace from the resulting string.
return: Returns the alphabetized string.

Flowchart:

Live Demo:

See the Pen JavaScript Alphabetize a given string - string-ex-25 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

Write a JavaScript function that rearranges the letters of a string in alphabetical order.
Write a JavaScript function that converts a string to lowercase, sorts its characters, and returns the new string.
Write a JavaScript function that handles strings with spaces and punctuation by ignoring non-letter characters.
Write a JavaScript function that compares the alphabetized result of a string with a pre-sorted expected string.

Go to:

PREV : Truncate by Words.
NEXT : Remove First Occurrence.

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