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 Standard The definition of 'HTMLSelectElement' in that specification. |
Living Standard | No change since the latest snapshot, HTML5. |
HTML5 The 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.
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