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This can be done with a little javascript. Here's an example <html>
<head>
<script type="text/javascript" language="javascript">
function addNewItem()
{
// Retrieve the elements from the document body
var textbox = document.getElementById('MyTextbox');
var listbox = document.getElementById('MyListbox'); // Now we need to create a new 'option' tag to add to MyListbox
var newOption = document.createElement('option');
newOption.value = textbox.value; // The value that this option will have
newOption.innerHTML = textbox.value; // The displayed text inside of the <option> tags // Finally, add the new option to the listbox
listbox.appendChild(newOption);
}
</script>
</head> <body> <input id="MyTextbox" type="textbox" />
<input type="button" value="Add Item" onclick="javascript:addNewItem()" /> <br /><br /> <select id="MyListbox" size="10">
<option value="apples">Apples</option>
<option value="Oranges">Oranges</option>
<option value="bananas">Bananas</option>
</select> </body>
</html>
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∙ 16y ago
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