HTML Attribute

Attribute allows to specify how web browsers should treat a particular tag (provides additional information on its elements). It is included within start tag or an empty tag. End or closing tags do not contain attributes.

Example

align="center"

List of some of the HTML Attributes

Attribute	Description	Used with Element
action	Used for directing request with form-data while submitting a form.	<form>
alt	Used to show an alternate text when the original content failed to display.	<img> <area> <input>
async	Used for allowing a script to run asynchrously.	<script>
autoplay	Used to make a video or audio play automatically when it is ready.	<video> <audio>
checked	Used to pre-select option of radio type or checkbox type.	<input>
charset	Used for setting the character encoding.	<meta><script>
class	Used for assigning one or more class for styling the element using css.	Global
col	Used for specifying the width of text area.	<textarea>
controls	Used for showing audio or video controls, such as play/pause button.	<video> <audio>
disabled	Used for assigning one or more class for styling the element using css.	<input> <button> <select> <option> <textarea> <fieldset>
download	Used for starting download when a link is clicked.	<a><textarea>
form	Used for indicating the element's form.	<input> <button> <select> <option> <textarea> <fieldset> <meter> <object>
height	Used for specifying the height of the element.	<input> <img> <video> <canvas> <object> <iframe> <embed>
hidden	Used for hiding the element.	Global
href	Used for specifying the URL of a page.	<a> <textarea> <link> <base>
id	Used for assigning a unique id to an element.	Global
lang	Used for specifying the language of an element.	Global
max	Used for specifying the maximum value of the element.	<input> <progress> <mater>
maxLength	Used for maximum length of the element.	<input> <textarea>
method	Used for specifying the request type, such as POST, GET, DELETE, PATCH, etc.	<form>
min	Used for specifying a minimum value of the element.	<input> <meter>
name	Used for specifying the name of the element.	<input> <textarea> <button> <fieldset> <iframe> <select> <meta> <map> <object> <param>
novalidate	Used for specifying that the form must not be validated while submitting.	<form>
onclick	This is an event attribute. Used for specifying what to run when a value of an element is clicked.	<select>
onchange	This is an event attribute. Used for specifying what to run when a value of an element is changed.	<select> <button> <input>
onscroll	Used to detect when an element's scrollbar is being scrolled.	<table> <body>
onsubmit	Used to detect an event when a form is submitted.	<form>
placeholder	Used to show hint value to describe what value is accepted.	<textarea> <input>
selected	Used to pre-select an option of the element.	<option>
shape	Used for specifying shape of the element.	<textarea>
spellcheck	Used for specifying if the element should have specifying and grammer checking.	Global
style	Used for specifying an inline css style for the element.	Global
target	Used for specifying whether to open a page in the new tab of a browser.	<a> <area> <base> <form>
type	Used for specifying the type of an element.	<input> <button> <embed> <a> <link> <object> <menu> <script> <style> <source>
value	Used to assign a value to the element.	<input> <button> <li> <meter> <option> <param> <progress>
wrap	Used for wrapping a text in textarea when submitting.	<textarea>