The HTML <select></select> element presents a menu of options. The options within the menu are represented by <option> elements, which can be grouped by <optgroup> elements.

Attributes

• autofocus - Specifies that a form 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 element in a document can have this attribute, which is a Boolean. (HTML5)
• disabled - This Boolean attribute indicates that the user cannot interact with the control. If this attribute is not specified, the control inherits its setting from the containing element, for example <fieldset>; if there is no containing element with the disabled attribute set, then the control is enabled.
• form - The <form> element that this element is associated with (its "form owner"). The value of this attribute must be an ID of a <form> element in the same document. If this attribute is not specified, this element must be a descendant of a <form> element. This attribute enables you to place <select> elements anywhere within a document, not just as descendants of their <form> elements. (HTML5)
• multiple - This Boolean attribute indicates that multiple options can be selected in the list. If it is not specified, then only one option can be selected at a time.
• name - Specifies the name of the control.
• size - If the control is presented as a scrolled list box, this attribute represents the number of rows in the list that should be visible at one time. Browsers are not required to present <select> elements as a scrolled list box.

HTML example:

<select>
       <option>1</option>
       <option>2</option>
       <option>3</option>
</select>

Image example: