How to reverse a number in JavaScript
In this tutorial, we are going to see how to write a program to reverse the digits of a number in the JavaScript programming language.
Example :
Input: 123 Output: 321
Program to reverse a number in JavaScript
<!doctype html>
<html>
<head>
<script>
function reverse()
{
var tmp=0, x, nbr, y;
nbr = Number(document.getElementById("Myinput").value);
y = nbr;
while(nbr > 0)
{
x = nbr%10;
nbr = parseInt(nbr/10);
tmp = tmp*10+x;
}
alert(tmp);
}
</script>
</head>
<body>
Enter a number : <input id="Myinput">
<button onclick="reverse()">Reverse</button>
</body>
</html>
| Result |
|---|
| Enter a number : |
- What is a Web Worker in JavaScript?
- How to Sort an Array of Strings in JavaScript?
- ECMAScript vs JavaScript
- What is strict mode in JavaScript?
- JavaScript MCQs – Multiple Choice Questions and Answers – Part 1
- JavaScript MCQs – Multiple Choice Questions and Answers – Part 2
- JavaScript MCQs – Multiple Choice Questions and Answers – Part 3
- JavaScript MCQs – Multiple Choice Questions and Answers – Part 4
- JavaScript MCQs – Multiple Choice Questions and Answers – Part 5
- JavaScript MCQs – Multiple Choice Questions and Answers – Part 6
- Arrow functions in JavaScript
- Difference between Node.js and AngularJS
- Difference between == and === in JavaScript
- What is JSON in Javascript
- How to go back to previous page in Javascript
- How to detect a mobile device with JavaScript
- How to close the current tab in a browser window using JavaScript
- How to convert input text to uppercase while typing using Javascript
- How to show a confirmation message before delete
- How to detect browser or tab closing in JavaScript
- How to get hash value from URL using JavaScript
- How to get the name, size, and type of a file in JavaScript
- Run javascript from the command line
- How to show an error message beside a field in HTML using Javascript
- Contact form with HTML, CSS, and Javascript
- Write your first Hello, World! in JavaScript
- How to get URL parameters in JavaScript
- Write a Javascript Program to Compute the Greatest Common Divisor GCD of Two Positive Integers
- How to calculate the square root of a number in JavaScript
- Convert decimal to binary, octal, or hexadecimal in Javascript
- Anagram in javascript
- How to Merge Objects in JavaScript
- Fibonacci Series Program in JavaScript
- How to refresh a page in Javascript
- Create an associative array in Javascript
- How to Format Number as Currency String in JavaScript
- How to disable right-click in JavaScript
- How to open a URL in a new tab in Javascript
- How to loop through a plain JavaScript object
- How to reverse a string in JavaScript
- Caesar Cipher in Javascript
- Generate a unique ID in Javascript
- SetInterval() and setTimeout() methods in Javascript
- Round to 2 decimal places in JavaScript
- Merge Sort in JavaScript
- How to remove a specific item from an array in Javascript
- Selection Sort in JavaScript
- Insertion Sort in JavaScript
- Bubble Sort in Javascript
- How to randomize (shuffle) an array in Javascript
- How to check if an object is an array in JavaScript
- Convert int to string in Javascript
- How to Get All Unique Values in a JavaScript Array
- How to copy an array in Javascript
- How to generate a random number in JavaScript
- Top JavaScript Frameworks to Use in 2022
- List of JavaScript functions
- Display a JavaScript variable in an HTML page
- Show a DIV after X seconds in Javascript
- Show/Hide multiple DIVs in Javascript
- How to change the text inside a DIV element in JavaScript
- How to get the text of HTML element in Javascript
- How to Append or Add text to a DIV using JavaScript
- Calculate age given the birth date in the format YYYYMMDD in Javascript
- How to compare two dates in Javascript
- Calculate the number of days between two dates in Javascript
- How to print a PDF file using Javascript
- Confirm password validation in JavaScript
- Check if an input field is a number in Javascript
- How to check if an input field is empty in Javascript
- How to validate an email address in JavaScript
- Remove the last character of a string in Javascript
- How to Get The Last Character Of a String in Javascript
- How to redirect to another page after 5 seconds in Javascript
- Digital Clock In JavaScript
- How to Display the Current Date and Time in Javascript
- Sum of two numbers in JavaScript
- How to find factorial of a number in JavaScript
- Function to check if a number is prime in Javascript
- How to reverse a number in JavaScript
- Code to check if age is not less than 18 years in Javascript
- How to Convert a String to Lowercase in Javascript
- How to Convert Strings to Uppercase in JavaScript
- Check if a number is a palindrome in JavaScript
- How to determine if a number is odd or even in JavaScript
- Armstrong Number in JavaScript
- Difference between PHP and Javascript
- How to pass JavaScript variables to PHP
- How to reset a form with JavaScript
- How to detect when a window is resized using JavaScript
- Call two functions from the same onClick event in JavaScript
- Adjust the iFrame height to fit with content in JavaScript
- How to get the value from the input field in Javascript
- How to add an element to the beginning of an array in JavaScript
- How to convert a JavaScript object to JSON string
- How to Generate a Timestamp in JavaScript
- How to Add Elements to an Array in JavaScript
- How to parse JSON into JavaScript
- How to Detect Screen Resolution with JavaScript
- How to Include a JavaScript File in another JavaScript File
- How to Get the Current URL with JavaScript
- How to return multiple values from a function in JavaScript
- How to sort an array of numbers in JavaScript
- How to check if a string is empty in JavaScript
- How to Convert Comma Separated String into an Array In JavaScript
- Difference between encodeURIComponent() and encodeURI() in JavaScript
- How To Decode a URL In JavaScript
- How To Encode a URL With JavaScript
- How to Create Multiline Strings in JavaScript
- How to change the background color with JavaScript
- How to check if a variable exists or is defined in JavaScript
- How to check if a variable is undefined or null in JavaScript
- How to trigger or pause a CSS animation in Javascript
- How to Increase and Decrease Image Size Using JavaScript
- How to change image size in JavaScript
- How to get image size (height & width) using JavaScript
- How to concatenate two string arrays in Javascript
- How to define a function in JavaScript?
- How to remove a specific element from an array in JavaScript
- How to remove duplicates from an array using Javascript
- How to check if a value exists in an array in JavaScript
- How to loop through an array in JavaScript
- How to split a string in JavaScript
- How to check if a string contains a substring in JavaScript
- How to replace all character in a string in JavaScript
- How to replace multiple spaces with single space in JavaScript
- How to replace all occurrences of a character in a string in JavaScript?
- What is JavaScript?
- 5 Best JavaScript Framework For 2021
- What Is AJAX?
