JavaScript - Simple Image Rotation

Submitted by razormist on Sunday, February 10, 2019 - 09:47.
In this tutorial we will create a Simple Image Rotation using JavaScript. JavaScript is a scripting or programming language that allows you to implement complex things on web pages. It is widely used in designing a stunning website. It is an interpreted programming language that has a capabilities of Object-Oriented. So Let's do the coding...

Getting started:

First you have to download bootstrap framework, this is the link for the bootstrap that i used for the layout design https://getbootstrap.com/.

The Main Interface

This code contains the interface of the application. To create this just write these block of code inside the text editor and save this as index.html. 
  1. <!DOCTYPE html>
  2. <html lang="en">
  3. 	<head>
  4. 		<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
  5. 		<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
  6. 		<style>
  7. 			.rotater {
  8. 				transition: all 0.3s ease;
  9. 				border: 0.0625em solid black;
  10. 				border-radius: 3.75em;
  11. 			}
  12. 		</style>
  13. 	</head>
  14. <body>
  15. 	<nav class="navbar navbar-default">
  16. 		<div class="container-fluid">
  17. 			<a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
  18. 		</div>
  19. 	</nav>
  20. 	<div class="col-md-3"></div>
  21. 	<div class="col-md-6 well">
  22. 		<h3 class="text-primary">JavaScript - Simple Image Rotation</h3>
  23. 		<hr style="border-top:1px dotted #ccc;"/>
  24. 		<br /><br />
  25. 		<div class="col-md-3"></div>
  26. 		<div class="col-md-6">
  27. 			<center><img src="image.png" class="rotater" width="250" height="250" id="image"/></center>
  28.  
  29. 			<br /><br />
  30. 			<button type="button" class="btn btn-success pull-left" onclick="rotateLeft()"><span class="glyphicon glyphicon-arrow-left"></span> Rotate Left</button>
  31. 			<button type="button" class="btn btn-success pull-right" onclick="rotateRight()"><span class="glyphicon glyphicon-arrow-right"></span> Rotate Right</button>
  32. 		</div>
  33. 	</div>
  34. <script src="js/script.js"></script>	
  35. </body>	
  36. </html>

Creating the Script

This code contains the script of the application. This code will rotate the image base on the clicked button. To do this just copy and write these block of codes as shown below inside the text editor and save it as script.js inside the js folder. 
  1. var angle = 0;
  2.  
  3. function rotateRight(){
  4.  
  5. 	var img = document.getElementById('image');
  6. 	angle += 90;
  7.  
  8. 	image.style.transform = "rotate("+angle+"deg)";
  9. }
  10.  
  11. function rotateLeft(){
  12.  
  13. 	var img = document.getElementById('image');
  14. 	angle -= 90;
  15.  
  16. 	image.style.transform = "rotate("+angle+"deg)";
  17. }
There you have it we successfully created a Simple Image Rotation using JavaScript. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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