How to Preserve Dropdown Selections After Form Submission?

How to Retain Selected Values in Dropdowns after Form Submission

In an HTML form that contains dropdowns, it can be desirable to keep the selected values visible even after the form is submitted. This is especially useful in dynamic situations where the submitted data is used to filter subsequent options.

Solution using JavaScript

Instead of manually tracking the selected values and setting them manually after submission, you can use JavaScript to automate this process:

<select name="name">

This JavaScript code retrieves the selected values from the GET parameters ($_GET) passed in the URL after form submission and sets them as the default options in the dropdowns. As a result, the previously selected values will be displayed automatically upon page load.

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