How to Emulate Readonly SELECT Tag in HTML for POST Data?

Emulating Readonly SELECT Tag in HTML for POST Data

While the HTML specification allows disabling the SELECT element with the disabled attribute, this prevents its value from being included in the POST or GET requests. This poses a challenge when the desired behavior is to keep users from modifying the selection but still retain its value for submission.

To overcome this issue and achieve readonly functionality while preserving POST data, a two-step approach is recommended:

1. Keep the SELECT Disabled: Maintain the disabled attribute on the SELECT element to prevent user interaction.
2. Add Hidden Input: Create a hidden input element with the same name attribute as the SELECT and set its value to the current value of the SELECT.

If you later wish to enable the SELECT element, follow these steps:

1. Re-enable SELECT: Remove the disabled attribute from the SELECT and set its name attribute back to its original value.
2. Sync with Hidden Input: In the onchange event of the SELECT, copy its value to the hidden input to ensure consistency.

Here's a code example to illustrate this approach:

<form>

$('#animal-select').change(function() {
  $('#animal').val($(this).val());
});

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