What is the role of JavaScript's onChange event in automatically submitting a PHP form upon selecting an option?

The role of JavaScript's onChange event in automatically submitting a PHP form upon selecting an option is to trigger the form submission when the user selects a different option from a dropdown menu without requiring them to click a submit button. This can provide a more seamless user experience. 

<form id="myForm" action="submit.php" method="post">
  <select name="mySelect" onchange="document.getElementById('myForm').submit();">
    <option value="option1">Option 1</option>
    <option value="option2">Option 2</option>
    <option value="option3">Option 3</option>
  </select>
</form>

Keywords

JavaScript onChange event PHP form automatic submission option selection

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