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The HTMLSelectElement.selectedIndex is a long that reflects the index of the first selected <option> element. The value -1 indicates that no element is selected.


var index = selectElem.selectedIndex;
selectElem.selectedIndex = index;



<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>


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;


Specification Status Comment
HTML Living Standard
The definition of 'HTMLSelectElement' in that specification.
Living Standard No change since the latest snapshot, HTML5.
The definition of 'HTMLSelectElement' in that specification.
Recommendation Initial definition, snapshot of HTML Living Standard.

Browser compatibility

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Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support ? ? ? ? ?
Feature Android Chrome Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support ? ? ? ? ? ? ?

Document Tags and Contributors

 Contributors to this page: Druzion, teoli, Sebastianz, stephaniehobson
 Last updated by: Druzion,