HTMLButtonElement - Web APIs 编辑

The HTMLButtonElement interface provides properties and methods (beyond the regular HTMLElement interface it also has available to it by inheritance) for manipulating <button> elements.

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Properties

Inherits properties from its parent, HTMLElement.

HTMLButtonElement.accessKey

Is a DOMString indicating the single-character keyboard key to give access to the button.

HTMLButtonElement.autofocus

Is a Boolean indicating whether or not the 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-associated element in a document can have this attribute specified.

HTMLButtonElement.disabled

Is a Boolean indicating whether or not the control is disabled, meaning that it does not accept any clicks.

HTMLButtonElement.form Read only

Is a HTMLFormElement reflecting the form that this button is associated with. If the button is a descendant of a form element, then this attribute is the ID of that form element.
If the button is not a descendant of a form element, then the attribute can be the ID of any form element in the same document it is related to, or the null value if none matches.

HTMLButtonElement.formAction

Is a DOMString reflecting the URI of a resource that processes information submitted by the button. If specified, this attribute overrides the action attribute of the <form> element that owns this element.

HTMLButtonElement.formEnctype

Is a DOMString reflecting the type of content that is used to submit the form to the server. If specified, this attribute overrides the enctype attribute of the <form> element that owns this element.

HTMLButtonElement.formMethod

Is a DOMString reflecting the HTTP method that the browser uses to submit the form. If specified, this attribute overrides the method attribute of the <form> element that owns this element.

HTMLButtonElement.formNoValidate

Is a Boolean indicating that the form is not to be validated when it is submitted. If specified, this attribute overrides the novalidate attribute of the <form> element that owns this element.

HTMLButtonElement.formTarget

Is a DOMString reflecting a name or keyword indicating where to display the response that is received after submitting the form. If specified, this attribute overrides the target attribute of the <form> element that owns this element.

HTMLButtonElement.labels Read only

Is a NodeList that represents a list of <label> elements that are labels for this button.

HTMLButtonElement.menu

Is a HTMLMenuElement representing the menu element to be displayed if the button is clicked and is of type="menu".

HTMLButtonElement.name

Is a DOMString representing the name of the object when submitted with a form. HTML5 If specified, it must not be the empty string.

HTMLButtonElement.tabIndex

Is a long that represents this element's position in the tabbing order.

HTMLButtonElement.type

Is a DOMString indicating the behavior of the button. This is an enumerated attribute with the following possible values:

• submit: The button submits the form. This is the default value if the attribute is not specified, HTML5 or if it is dynamically changed to an empty or invalid value.
• reset: The button resets the form.
• button: The button does nothing.
• menu: The button displays a menu.

HTMLButtonElement.willValidate Read only

Is a Boolean indicating whether the button is a candidate for constraint validation. It is false if any conditions bar it from constraint validation, including: its type property is reset or button; it has a <datalist> ancestor; or the disabled property is set to true.

HTMLButtonElement.validationMessage Read only

Is a DOMString representing the localized message that describes the validation constraints that the control does not satisfy (if any). This attribute is the empty string if the control is not a candidate for constraint validation (willValidate is false), or it satisfies its constraints.

HTMLButtonElement.validity Read only

Is a ValidityState representing the validity states that this button is in.

HTMLButtonElement.value

Is a DOMString representing the current form control value of the button.

Methods

Inherits methods from its parent, HTMLElement

With Gecko-based browser, use the :-moz-submit-invalid pseudo-class to style submit buttons based on the validation of a form.

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• HTML element implementing this interface: <button>