Our concept involves offering three choices:
Should the user select option #3, a textbox will expand at the bottom of the dropdown menu for easy entry of a new email address.
Have you come across a similar design anywhere? Are there any examples or techniques you can share?
To set up this functionality, simply include a form field with the initial property style="display:none", and then reveal it when the third option is selected.
Below is a basic implementation:
<select onchange="showEmailField(this)">
<!-- Add your options here -->
</select>
<input type="text" name="email" id="email" style="display: none;" />
JavaScript:
function showEmailField(element) {
if(element.selectedIndex==2) {
document.getElementById('email').style.display = "";
}
}
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