1. Introduction
Reversing a string is a classic programming task that is often used as a demonstration of string manipulation techniques in various languages. In this post, we'll explore a simple yet efficient way to reverse a string using JavaScript.
2. Program Overview
In this guide, we will:
1. Begin with a sample string.
2. Implement a function to reverse the string.
3. Display the reversed string.
3. Code Program
let originalString = "JavaScript"; // String to be reversed
let reversedString = ""; // Variable to store the reversed string
// Function to reverse a string
function reverseString(str) {
return str.split('').reverse().join('');
}
reversedString = reverseString(originalString);
console.log("Original String: " + originalString);
console.log("Reversed String: " + reversedString);
Output:
Original String: JavaScript Reversed String: tpircSavaJ
4. Step By Step Explanation
1. Variable Initialization: We define our originalString which we want to reverse, and a variable reversedString which will store the result.
2. String Reversal Function: The reverseString(str) function accomplishes the reversal in three primary steps:
- split(''): This method splits the string into an array of its characters.
- reverse(): This array method reverses the order of elements in an array.
- join(''): Joins the array elements back together into a single string.
3. Function Invocation: We then call the reverseString function with our original string and assign the result to reversedString.
4. Displaying Results: Using the console.log method, we showcase both the original and reversed strings, providing a clear before-and-after perspective.
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