How can a button in a form trigger a JavaScript function in PHP?

To trigger a JavaScript function from a button in a form using PHP, you can use the onclick attribute in the button element to call the JavaScript function. You can echo out the JavaScript function call within the PHP code that generates the button. This way, when the button is clicked, the JavaScript function will be executed. 

<?php
echo '<form>';
echo '<button onclick="myFunction()">Click me</button>';
echo '</form>';
?>

<script>
function myFunction() {
  // Your JavaScript code here
}
</script>

Keywords

button form JavaScript function trigger PHP

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