The HTMLSelectElement.type read-only property returns the form control's type. 
 The HTMLSelectElement.type read-only property returns the form control's type. 
One of the following:
"select-multiple" if multiple values can be selected."select-one" if only one value can be selected.js
switch (select.type) { case "select-multiple": // Multiple values may be selected break; case "select-one": // Only one value may be selected break; default: // Non-standard value (or this isn't a SELECT element) }
| Specification | 
|---|
| HTML Standard  # dom-select-type-dev  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
type | 
1 | 12 | 1 | 1 | 2 | 3 | 4.4 | 18 | 4 | 10.1 | 1 | 1.0 | 
<select> HTML element, implementing this interface.
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    https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/type