The HTMLSelectElement.autofocus property is a Boolean that reflects the autofocus HTML attribute, which indicates whether the associated <select> element  will get input focus when the page loads, unless the user overrides it.
The HTML Label Element (<label>) represents a caption for an item in a user interface. It can be associated with a control either by placing the control element inside the <label> element, or by using the for attribute. Such a control is called the labeled control of the label element. One input can be associated with multiple labels.
The HTML <legend> Element (or HTML Legend Field Element) represents a caption for the content of its parent <fieldset>.
The HTML <meter> Element represents either a scalar value within a known range or a fractional value.
In a Web form, the HTML <optgroup> element  creates a grouping of options within a <select> element.
In a Web form, the HTML <option> element is used to create a control representing an item within a <select>, an <optgroup> or a <datalist> HTML5 element.
The HTML <progress> Element is used to view the completion progress of a task. While the specifics of how it's displayed is left up to the browser developer, it's typically displayed as a progress bar. Javascript can be used to manipulate the value of progress bar.
The HTML select (<select>) element represents a control that presents a menu of options. The options within the menu are represented by <option> elements, which can be grouped by <optgroup> elements. Options can be pre-selected for the user.
The HTML <textarea> element represents a multi-line plain-text editing control.
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.
The HTML <button> Element represents a clickable button.
The HTML Datalist Element (<datalist>) contains a set of <option> elements that represent the values available for other controls.
The HTML <fieldset> element is used to group several controls as well as labels (<label>) within a web form.
The HTML <form> element represents a document section that contains interactive controls to submit information to a web server.
The HTML element <input> is used to create interactive controls for web-based forms in order to accept data from the user. How an <input> works varies considerably depending on the value of its type attribute.
The HTML <output> element represents the result of a calculation or user action.