The HTMLSelectElement.selectedIndex
is a long
that reflects the index of the first or last selected <option>
element, depending on the value of multiple
. The value -1
indicates that no element is selected.
Syntax
var index = selectElem.selectedIndex; selectElem.selectedIndex = index;
Example
HTML
<p id="p">selectedIndex: 0</p>
<select id="select">
<option selected>Option A</option>
<option>Option B</option>
<option>Option C</option>
<option>Option D</option>
<option>Option E</option>
</select>
JavaScript
var selectElem = document.getElementById('select') var pElem = document.getElementById('p') // When a new <option> is selected selectElem.addEventListener('change', function() { var index = selectElem.selectedIndex; // Add that data to the <p> pElem.innerHTML = 'selectedIndex: ' + index; })
Specifications
Specification | Status | Comment |
HTML Living StandardThe definition of 'HTMLSelectElement' in that specification. | Living Standard | No change since the latest snapshot, HTML5. |
HTML5The definition of 'HTMLSelectElement' in that specification. | Recommendation | Initial definition, snapshot of HTML Living Standard. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
selectedIndex
|
Chrome
Full support Yes |
Edge
Full support 12 |
Firefox
Full support Yes |
IE
? |
Opera
Full support Yes |
Safari
Full support Yes |
WebView Android
Full support Yes |
Chrome Android
Full support Yes |
Firefox Android
Full support Yes |
Opera Android
Full support Yes |
Safari iOS
Full support Yes |
Samsung Internet Android
Full support Yes |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
HTMLSelectElement.selectedIndex by Mozilla Contributors is licensed under CC-BY-SA 2.5.