I'm trying to modify and example from this same page but its not working as I want.
I have two groups in a select, and I want chose any option from one of the second group "Unique" and if you select any option from that group show Div, else show nothing.
the html:
<div class="form-floating mb-3 mt-3">
<table>
<tr>
<td><input class="form-control input-lg email" type="email"
name="mail[]" required />
</td>
<td>
<select class="form-select" name="skills[]" required>
<optgroup Class="unique" label="Common">
<option value="Extraction">Extraction</option>
<option value="Hunting">Hunting</option>
<option value="Farming">Farming</option>
</optgroup>
<optgroup class="unique" label="Unique">
<option value="Diplomacy">Diplomacy</option>
<option value="Survival">Survival</option>
</optgroup>
</select>
</td>
<td>
</tr>
</table>
</div>
<div class="mt-5 extras" id="mydiv">
<h4 class="text-dark">Check</h4>
Increased through making items, sewing and cooking.<br>
<input class="form-check-input" type="checkbox" name="checkpoint"
checked required/>
</div>
the Js:
function showDiv(divId, element)
{
document.getElementById(divId).style.display = element.value ==
'Diplomacy' || 'Survival' ? 'block' : 'none';
}
css :
.extras{
display: none;
}
You can access the optgroup by finding the selected option, using closest() to find the enclosing optgroup tag, then accessing it's label attribute
function doSomething(element) {
// get optgroup
let optgroup = element.options[element.options.selectedIndex].closest('optgroup').getAttribute('label')
console.log(optgroup)
if (optgroup == 'Unique') {
console.log("do something ...")
}
}.extras {
display: none;
}<div class="form-floating mb-3 mt-3">
<table>
<tr>
<td><input class="form-control input-lg email" type="email" name="mail[]" required />
</td>
<td>
<select class="form-select" name="skills[]" onchange='doSomething(this)' required>
<optgroup Class="unique" label="Common">
<option value="Extraction">Extraction</option>
<option value="Hunting">Hunting</option>
<option value="Farming">Farming</option>
</optgroup>
<optgroup class="unique" label="Unique">
<option value="Diplomacy">Diplomacy</option>
<option value="Survival">Survival</option>
</optgroup>
</select>
</td>
<td>
</tr>
</table>
</div>
<div class="mt-5 extras" id="mydiv">
<h4 class="text-dark">Check</h4>
Increased through making items, sewing and cooking.<br>
<input class="form-check-input" type="checkbox" name="checkpoint" checked required/>
</div>