How to make a text box change depending on a dropdown menu
问题 I would like to know how to make a text box change according to a drop down menu. So for example ... <form action="index.php" method="POST"> <p>Product:</p> <select id = "myPRODUCTS"> <option value = "Apple">Apple</option> <option value = "Orange">Orange</option> <option value = "Mango">Mango</option> </select> <p>Price:</p><input type="text" name="Price" readonly="readonly" /> So I want the price text box to change if I have selected Apple I want it to be £0.45 or if I select orange I want