Do you ever wanted to have an HTML drop-down with default selected value (placeholder) that the user cannot re-select once they selected any valid value options? It can be done easily by adding selected and disabled attributes on the option element.

Code Snippet

    <option value="" selected="selected" disabled="disabled">-- SELECT --</option>
    <option value="ACTIVE">ACTIVE</option>
    <option value="INACTIVE">INACTIVE</option>

Try it!