JavaScript: Reverse a given string

JavaScript Basic: Exercise-48 with Solution

Reverse a Given String

Write a JavaScript program to reverse a given string.

This JavaScript program reverses a given string. It iterates through the characters of the string from the last to the first and constructs a new string by appending each character in reverse order. Finally, it returns the reversed string.

Visual Presentation:

Sample Solution:

JavaScript Code:

// Define a function named string_reverse with a parameter str
function string_reverse(str) {
    // Split the string into an array of characters, reverse the order, and join them back into a string
    return str.split("").reverse().join("");
}

// Log the result of calling string_reverse with the argument "w3resource" to the console
console.log(string_reverse("w3resource"));

// Log the result of calling string_reverse with the argument "www" to the console
console.log(string_reverse("www"));

// Log the result of calling string_reverse with the argument "JavaScript" to the console
console.log(string_reverse("JavaScript")); 

Output:

ecruoser3w
www
tpircSavaJ

Live Demo:

See the Pen JavaScript - Reverse a string - basic-ex-48 by w3resource (@w3resource) on CodePen.

Flowchart:

ES6 Version:

// Convert the provided JavaScript code to ES6

// Define a function named string_reverse with parameter str
const string_reverse = (str) => {
    // Use split, reverse, and join methods to reverse the characters of the string
    return str.split("").reverse().join("");
};

// Log the result of calling string_reverse with the argument "w3resource" to the console
console.log(string_reverse("w3resource"));

// Log the result of calling string_reverse with the argument "www" to the console
console.log(string_reverse("www"));

// Log the result of calling string_reverse with the argument "JavaScript" to the console
console.log(string_reverse("JavaScript"));

For more Practice: Solve these Related Problems:

• Write a JavaScript program that reverses a given string without using the built-in reverse() method.
• Write a JavaScript program that reverses each word in a sentence while preserving the word order.
• Write a JavaScript program that reverses a string and then returns the string with alternating character cases.

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