JavaScript - Simple Limited Characters Count

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In this tutorial we will create a Simple Limited Characters Count using JavaScript. This code will limit the characters that can be inputted. This can help you lessen the data that have been transfer in the database, to prevent database storage to be full. You can apply this script to your code to make your transaction faster, it is a user-friendly program feel free to modify it.

We will use JavaScript to add some new feature to the website interface by actually written into an HTML page. It is what gives your page a different interactive elements and animation that engage a user.

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 Limited Characters Count</h3>
  16. <hr style="border-top:1px dotted #ccc;"/>
  17. <div class="col-md-3"></div>
  18. <div class="col-md-6">
  19. <div class="form-group">
  20. <textarea id="editor" class="form-control" style="height:150px; resize:none;" onKeyup="limit_character()"></textarea>
  21. </div>
  22. <div id="character-count" class="pull-right" style="color:#000;"></div>
  23. </div>
  24. </div>
  26. <script src="js/script.js"></script>
  28. </body>
  29. </html>

Creating the Script

This code contains the script of the application. This code will limit the characters that are being type in the textarea. 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. var limit = 150;
  2. var character_remaining = limit;
  4. document.getElementById("character-count").innerHTML = "Number of characters left: <span style='color:blue;'>"+limit+"</span>";
  6. function limit_character() {
  7. var character_entered = document.getElementById('editor');
  9. if(character_entered.value.length > limit){
  10. character_entered.value = character_entered.value.substring(0, limit);
  11. }else{
  12. document.getElementById('character-count').innerHTML = "Number of characters left: <span style='color:blue;'>"+(character_remaining - character_entered.value.length)+"</span>";
  13. }
  14. }

There you have it we successfully created a Simple Limited Characters Count 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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