JavaScript - Simple Random Image Display

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In this tutorial we will create a Simple Random Image Display using JavaScript. JavaScript is a scripting or programming language that allows you to implement complex things on web pages. It is a text-based programming language meant to run as part of a web-based application. It is an interpreted programming language that has a capabilities of Object-Oriented. So Let's do the coding...

Getting Started:

This is the link for the bootstrap that i used for the layout design

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. </head>
  7. <nav class="navbar navbar-default">
  8. <div class="container-fluid">
  9. <a class="navbar-brand" href="<a href="">Sourcecodester</a>
  10. " rel="nofollow">">Sourcecodester</a>
  11. </a> </div>
  12. </nav>
  13. <div class="col-md-3"></div>
  14. <div class="col-md-6 well">
  15. <h3 class="text-primary">JavaScript - Simple Random Image Display</h3>
  16. <hr style="border-top:1px dotted #ccc;"/>
  17. <button class="btn btn-primary" type="button" onclick="randomImage();"><span class="glyphicon glyphicon-random"></span> Display image</button>
  18. <br />
  19. <br />
  20. <div id="result" style="border:1px dotted #000; width:100%; height:300px;">
  21. <center style="margin-top:20%;"><h3>Image Display</h3></center>
  22. </div>
  23. </div>
  24. <script src="js/script.js"></script>
  25. </body>
  26. </html>

Creating the Script

This code contains the script of the application. This code will display image randomly everytime the user click the 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 directory.

  1. function randomImage(){
  2. var images = [
  3. 'image1.jpeg',
  4. 'image2.jpeg',
  5. 'image3.jpg',
  6. 'image4.jpg',
  7. ];
  9. var randomIndex = Math.floor(Math.random()*images.length);
  11. document.getElementById('result').innerHTML = "<img style='height:100%; width:100%;' src='images/"+images[randomIndex]+"'>";
  12. }

There you have it we successfully created a Simple Random Image Display 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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