HTMLSelectElement

The HTMLSelectElement interface represents a <select> HTML Element. These elements also share all of the properties and methods of other HTML elements via the HTMLElement interface.

Properties

This interface inherits the properties of HTMLElement, and of Element and Node.

HTMLSelectElement.autofocus
A Boolean reflecting the autofocus HTML attribute, which indicates whether the control should have input focus when the page loads, unless the user overrides it, for example by typing in a different control. Only one form-associated element in a document can have this attribute specified.
HTMLSelectElement.disabled
A Boolean reflecting the disabled HTML attribute, which indicates whether the control is disabled. If it is disabled, it does not accept clicks.
HTMLSelectElement.formRead only
An HTMLFormElement referencing the form that this element is associated with. If the element is not associated with of a <form> element, then it returns null.
HTMLSelectElement.labelsRead only
A NodeList of <label> elements associated with the element.
HTMLSelectElement.length
An unsigned long The number of <option> elements in this select element.
HTMLSelectElement.multiple
A Boolean reflecting the multiple HTML attribute, which indicates whether multiple items can be selected.
HTMLSelectElement.name
A DOMString reflecting the name HTML attribute, containing the name of this control used by servers and DOM search functions.
HTMLSelectElement.optionsRead only
An HTMLOptionsCollection representing the set of <option> elements contained by this element.
HTMLSelectElement.required
A Boolean reflecting the required HTML attribute, which indicates whether the user is required to select a value before submitting the form.
HTMLSelectElement.selectedIndex
A long reflecting the index of the first selected <option> element. The value -1 indicates no element is selected.
HTMLSelectElement.selectedOptionsRead only
An HTMLCollection representing the set of <option> elements that are selected.
HTMLSelectElement.size
A long reflecting the size HTML attribute, which contains the number of visible items in the control. The default is 1, unless multiple is true, in which case it is 4.
HTMLSelectElement.typeRead only
A DOMString represeting the form control's type. When multiple is true, it returns "select-multiple"; otherwise, it returns "select-one".
HTMLSelectElement.validationMessageRead only
A DOMString representing a localized message that describes the validation constraints that the control does not satisfy (if any). This attribute is the empty string if the control is not a candidate for constraint validation (willValidate is false), or it satisfies its constraints.
HTMLSelectElement.validityRead only
A ValidityState reflecting the validity state that this control is in.
HTMLSelectElement.value
A DOMString reflecting the value of the form control. Returns the value property of the first selected option element if there is one, otherwise the empty string.
HTMLSelectElement.willValidateRead only
A Boolean that indicates whether the button is a candidate for constraint validation. It is false if any conditions bar it from constraint validation.

Methods

This interface inherits the methods of HTMLElement, and of Element and Node.

HTMLSelectElement.add()
Adds an element to the collection of option elements for this select element.
HTMLSelectElement.blur()
Removes input focus from this element. This method is now implemented on HTMLElement.
HTMLSelectElement.checkValidity()
Checks whether the element has any constraints and whether it satisfies them. If the element fails its constraints, the browser fires a cancelable invalid event at the element (and returns false).
HTMLSelectElement.focus()
Gives input focus to this element. This method is now implemented on HTMLElement.
HTMLSelectElement.item()
Gets an item from the options collection for this <select> element. You can also access an item by specifying the index in array-style brackets or parentheses, without calling this method explicitly.
HTMLSelectElement.namedItem()
Gets the item in the options collection with the specified name. The name string can match either the id or the name attribute of an option node. You can also access an item by specifying the name in array-style brackets or parentheses, without calling this method explicitly.
HTMLSelectElement.remove()
Removes the element at the specified index from the options collection for this select element.
reportValidity()
This method reports the problems with the constraints on the element, if any, to the user. If there are problems, it fires a cancelable invalid event at the element, and returns false; if there are no problems, it returns true.
HTMLSelectElement.setCustomValidity()
Sets the custom validity message for the selection element to the specified message. Use the empty string to indicate that the element does not have a custom validity error.

Events

Listen to these events using addEventListener() or by assigning an event listener to the oneventname property of this interface:

input event
Fires when the value of an <input>, <select>, or <textarea> element has been changed. 

Example

Get information about the selected option

/* assuming we have the following HTML
<select id='s'>
    <option>First</option>
    <option selected>Second</option>
    <option>Third</option>
</select>
*/

var select = document.getElementById('s');

// return the index of the selected option
console.log(select.selectedIndex); // 1

// return the value of the selected option
console.log(select.options[select.selectedIndex].value) // Second

A better way to track changes to the user's selection is to watch for the change event to occur on the <select>. This will tell you when the value changes, and you can then update anything you need to. See the example provided in the documentation for the change event for details.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'HTMLSelectElement' in that specification.
Living Standard Since the latest snapshot, HTML5, it adds the autocomplete property and the reportValidity() method.
HTML5
The definition of 'HTMLSelectElement' in that specification.
Recommendation Is a snapshot of HTML Living Standard.
It adds the autofocus, form, required, labels, selectedOptions, willValidate, validity and validationMessage properties.
The tabindex property and the blur() and focus() methods have been moved to HTMLElement.
The methods item(), namedItem(), checkValidity() and setCustomValidity().
Document Object Model (DOM) Level 2 HTML Specification
The definition of 'HTMLSelectElement' in that specification.
Obsolete options now returns an HTMLOptionsCollection.
length now returns an unsigned long.
Document Object Model (DOM) Level 1 Specification
The definition of 'HTMLSelectElement' in that specification.
Obsolete Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
HTMLSelectElementChrome Full support 1Edge Full support YesFirefox Full support 2
Notes
Full support 2
Notes
Notes You should watch for change events on <select> instead of watching <option> elements for events. See bug 1090602 and Multiprocess Firefox Web content compatibility for details.
IE Full support 1Opera Full support 2Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support YesSamsung Internet Android ?
addChrome Full support YesEdge Full support 12Firefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
autocompleteChrome Full support 66Edge ? Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support 66Chrome Android Full support 66Firefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
autofocusChrome Full support YesEdge Full support 12Firefox Full support YesIE Full support 10Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android No support NoSafari iOS No support NoSamsung Internet Android ?
blurChrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?
checkValidityChrome Full support YesEdge Full support 12Firefox Full support 4IE Full support 10Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
disabledChrome Full support YesEdge Full support 12Firefox Full support YesIE Full support 9Opera Full support 9Safari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
focusChrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?
formChrome Full support YesEdge Full support 12Firefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
itemChrome Full support YesEdge Full support 12Firefox Full support 4IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
labelsChrome Full support 14Edge Full support 18Firefox Full support 56IE No support NoOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 56Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
lengthChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
multipleChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
nameChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
namedItemChrome Full support YesEdge Full support 12
Notes
Full support 12
Notes
Notes namedItem does not appear to take the name attribute into account (only the id attribute) on Internet Explorer and Edge. There is a bug report to Microsoft about this.
Firefox Full support 4IE Full support Yes
Notes
Full support Yes
Notes
Notes namedItem does not appear to take the name attribute into account (only the id attribute) on Internet Explorer and Edge. There is a bug report to Microsoft about this.
Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
optionsChrome Full support YesEdge Full support 12Firefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
removeChrome Full support YesEdge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
reportValidityChrome Full support 40Edge Full support 17Firefox Full support 49IE No support NoOpera Full support 27Safari Full support 10WebView Android Full support 40Chrome Android Full support 40Firefox Android Full support 64Opera Android Full support 27Safari iOS Full support 10Samsung Internet Android Full support 4.0
requiredChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
selectedIndexChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
selectedOptionsChrome Full support YesEdge Full support 12Firefox Full support YesIE No support NoOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
setCustomValidityChrome Full support YesEdge Full support 12Firefox Full support 4IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
sizeChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
typeChrome Full support 1Edge Full support 12Firefox Full support 2IE Full support 1Opera Full support 2Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android ?
validationMessageChrome Full support YesEdge Full support 12Firefox Full support 4IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
validityChrome Full support YesEdge Full support 12Firefox Full support 4IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
valueChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
willValidateChrome Full support YesEdge Full support 12Firefox Full support 4IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.

See also

  • The <select> HTML element, which implements this interface.