In JavaScript, you can check if a checkbox is checked by accessing the checked property of the checkbox element. Here's an example:

const checkbox = document.getElementById('myCheckbox');
if (checkbox.checked) {
    // The checkbox is checked
}

In JavaScript, you can check if a checkbox is checked by using its checked property. Here's an example:

Example:

HTML

<input type="checkbox" id="myCheckbox">

JavaSCript

// Select the checkbox element
const checkbox = document.getElementById('myCheckbox');

// Check if it's checked
if (checkbox.checked) {
    console.log('Checkbox is checked');
} else {
    console.log('Checkbox is not checked');
}

Explanation:

• The checked property of a checkbox element returns a boolean:
  • true if the checkbox is checked.
  • false if it's not.

HTML Example:

<input type="checkbox" id="myCheckbox">
<button onclick="checkCheckbox()">Check Status</button>

<script>
  function checkCheckbox() {
      const checkbox = document.getElementById('myCheckbox');
      if (checkbox.checked) {
          alert('The checkbox is checked!');
      } else {
          alert('The checkbox is not checked!');
      }
  }
</script>

This method works for any checkbox element, regardless of its name or ID. Here is a live example :