This attribute on a is nonstandard and Firefox-specific. Unlike other browsers, Firefox persists the dynamic disabled state of a across page loads. Setting autocomplete="off" on the button disables this feature; see Firefox bug 654072.

The element to associate the button with (its form owner). The value of this attribute must be the id of a in the same document. (If this attribute is not set, the is associated with its ancestor element, if any.)


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If the button is a submit button, this Boolean attribute specifies that the form is not to be validated when it is submitted. If this attribute is specified, it overrides the novalidate attribute of the button's form owner.

If the button is a submit button, this attribute is an author-defined name or standardized, underscore-prefixed keyword indicating where to display the response from submitting the form. This is the name of, or keyword for, a browsing context (a tab, window, or ). If this attribute is specified, it overrides the target attribute of the button's form owner. The following keywords have special meanings:

The button will toggle a popover between showing and hidden. If the popover is hidden, it will be shown; if the popover is showing, it will be hidden. If popovertargetaction is omitted, "toggle" is the default action that will be performed by the control button.

A submit button with the attribute formaction set, but without an associated form does nothing. You have to set a form owner, either by wrapping it in a or set the attribute form to the id of the form.

If your buttons are not for submitting form data to a server, be sure to set their type attribute to button. Otherwise they will try to submit form data and to load the (nonexistent) response, possibly destroying the current state of the document.

If you want to visually hide the button's text, an accessible way to do so is to use a combination of CSS properties to remove it visually from the screen, but keep it parsable by assistive technology.

However, it is worth noting that leaving the button text visually apparent can aid people who may not be familiar with the icon's meaning or understand the button's purpose. This is especially relevant for people who are not technologically sophisticated, or who may have different cultural interpretations for the icon the button uses.

Interactive elements such as buttons should provide an area large enough that it is easy to activate them. This helps a variety of people, including people with motor control issues and people using non-precise forms of input such as a stylus or fingers. A minimum interactive size of 4444 CSS pixels is recommended.

Firefox will add a small dotted border on a focused button. This border is declared through CSS in the browser stylesheet, but you can override it to add your own focused style using button::-moz-focus-inner { }.

If overridden, it is important to ensure that the state change when focus is moved to the button is high enough that people experiencing low vision conditions will be able to perceive it.

Color contrast ratio is determined by comparing the luminosity of the button text and background color values compared to the background the button is placed on. In order to meet current Web Content Accessibility Guidelines (WCAG), a ratio of 4.5:1 is required for text content and 3:1 for large text. (Large text is defined as 18.66px and bold or larger, or 24px or larger.)

This attribute on a is nonstandard and Firefox-specific. Unlike other browsers, Firefox persists the dynamic disabled state of a across page loads. Setting autocomplete=\"off\" on the button disables this feature; see Firefox bug 654072.

The button will toggle a popover between showing and hidden. If the popover is hidden, it will be shown; if the popover is showing, it will be hidden. If popovertargetaction is omitted, \"toggle\" is the default action that will be performed by the control button.

Sometimes you might want to have icons for certain buttons to enhance the UX of the application as we recognize logos more easily than plain text. For example, if you have a delete button you can label it with a dustbin icon.

In modern clothing and fashion design, buttons are commonly made of plastic but also may be made of metal, wood, or seashell. Buttons can also be used on containers such as wallets and bags. Buttons may be sewn onto garments and similar items exclusively for purposes of ornamentation. In the applied arts and craft, a button can be an example of folk art, studio craft, or even a miniature work of art. In archaeology, a button can be a significant artifact.

Buttons made from seashell were used by the Indus Valley Civilization for ornamental purposes by 2000 BC.[5] Some buttons were carved into geometric shapes and were pierced so that they could be attached to clothing with thread.[5] Ian McNeil (1990) holds that "the button was originally used more as an ornament than as a fastening, the earliest known being found at Mohenjo-daro in the Indus Valley. It is made of a curved shell and is about 5000 years old."[6]

Leatherwork from the Roman Empire incorporates some of the first buttonholes, with the legionary Loculus (satchel) closed through the insertion of a metallic buckle, or button into a leather slit. A similar mechanism would later feature in early medieval footwear.[8]Buttons appeared as a means to close cuffs in the Byzantine Empire and to fasten the necks of Egyptian tunics by no later than the 5th century.[9]

Since at least the seventeenth century, when box-like metal buttons were constructed especially for the purpose,[10] buttons have been one of the items in which drug smugglers have attempted to hide and transport illegal substances. At least one modern smuggler has tried to use this method.[11]

Because buttons have been manufactured from almost every possible material, both natural and synthetic, and combinations of both, the history of the material composition of buttons reflects the timeline of materials technology.

Buttons can be individually crafted by artisans, craftspeople or artists from raw materials or found objects (for example fossils), or a combination of both. Alternatively, they can be the product of low-tech cottage industry or be mass-produced in high-tech factories. Buttons made by artists are art objects, known to button collectors as "studio buttons" (or simply "studios", from studio craft).[13]

In 1918, the US government made an extensive survey of the international button market, which listed buttons made of vegetable ivory, metal, glass, galalith, silk, linen, cotton-covered crochet, lead, snap fasteners, enamel, rubber, buckhorn, wood, horn, bone, leather, paper, pressed cardboard, mother-of-pearl, celluloid, porcelain, composition, tin, zinc, xylonite, stone, cloth-covered wooden forms, and papier-mch. Vegetable ivory was said to be the most popular for suits and shirts, and papier-mch far and away the commonest sort of shoe button.[14]

Historically, fashions in buttons have also reflected trends in applied aesthetics and the applied visual arts, with buttonmakers using techniques from jewellery making, ceramics, sculpture, painting, printmaking, metalworking, weaving and others. The following are just a few of the construction and decoration techniques that have been used in button-making: ff782bc1db

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