Learn how to create a JavaScript character counter

JavaScript is a powerful programming language that can be used to create interactive and dynamic web pages. One common use case for JavaScript is creating a character counter for input fields, such as textareas and input boxes. In this tutorial, I will show you how to create a simple character counter using JavaScript.

Step 1: Create the HTML

First, let’s create the HTML for our character counter. We will need an input field or textarea and a span element to display the character count:

    
      <textarea id="myInput" oninput="countCharacters()"></textarea>
      <span id="charCount">0</span>
    
  

Step 2: Create the JavaScript function

Next, we will create a JavaScript function to count the characters in the input field and update the character count in the span element:

    
      function countCharacters() {
        var input = document.getElementById('myInput').value;
        var count = input.length;
        document.getElementById('charCount').innerText = count;
      }
    
  

Step 3: Test the character counter

Now that we have created the HTML and JavaScript for our character counter, let’s test it out. Open the HTML file in a web browser and start typing in the textarea. You should see the character count update in real-time as you type.

Congratulations! You have successfully created a JavaScript character counter. You can now use this knowledge to add character counters to your own web projects.