How To Count Every Checked Checkboxes

To count every checked checkbox in your HTML form, you need to use JavaScript to loop through each checkbox element and check if it is checked or not. This task might sound a bit complex, but with the right guidance, you'll be able to do it quite easily.

Before we dive into the code, let's break down the process into smaller steps to make it more manageable. First, we need to select all the checkbox elements on the page. We can achieve this by using document.querySelectorAll() method and specifying the input[type='checkbox'] selector.

const checkboxes = document.querySelectorAll('input[type="checkbox"]');

After selecting all checkboxes, we can iterate over each checkbox using a loop, such as a forEach loop, to check if it is checked. We will then increment a counter every time a checkbox is checked.

let checkedCount = 0;

checkboxes.forEach((checkbox) => {
  if (checkbox.checked) {
    checkedCount++;
  }
});

console.log('Number of checked checkboxes: ', checkedCount);

In the above code snippet, we initialize a variable named checkedCount to store the number of checked checkboxes. We then iterate over each checkbox using the forEach method and check if the checkbox is checked. If it is checked, we increment the checkedCount by one.

Finally, we display the total count of checked checkboxes using console.log() method, but you can customize this output based on your requirements.

One important thing to note is that this code needs to be executed after the DOM has fully loaded to ensure that all checkboxes are properly selected. You can achieve this by wrapping the code inside a DOMContentLoaded event listener.

document.addEventListener('DOMContentLoaded', function() {
  // Your checkbox counting code here
});

By following these steps and understanding the code snippets provided, you can easily implement a functionality to count every checked checkbox in your HTML form using JavaScript. This can be handy for various scenarios where you need to track user selections or perform certain actions based on checkbox states.