How to read the post request parameters using JavaScript

A little piece of PHP to get the server to populate a JavaScript variable is quick and easy:

var my_javascript_variable = <?php echo json_encode($_POST['my_post'] ?? null) ?>;

Then just access the JavaScript variable in the normal way.

Note there is no guarantee any given data or kind of data will be posted unless you check - all input fields are suggestions, not guarantees.

POST data is data that is handled server side. And Javascript is on client side. So there is no way you can read a post data using JavaScript.

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