@material/mwc-button

<mwc-button>

IMPORTANT: The Material Web Components are a work in progress and subject to major changes until 1.0 release.

Buttons allow users to take actions, and make choices, with a single tap.

Material Design Guidelines: Button

Demo

Installation

npm install @material/mwc-button

NOTE: The Material Web Components are distributed as ES2017 JavaScript Modules, and use the Custom Elements API. They are compatible with all modern browsers including Chrome, Firefox, Safari, Edge, and IE11, but an additional tooling step is required to resolve bare module specifiers, as well as transpilation and polyfills for IE11. See here for detailed instructions.

Example Usage

Standard

<mwc-button label="standard"></mwc-button>
<mwc-button label="standard" icon="code"></mwc-button>

Outlined

<mwc-button outlined label="outlined"></mwc-button>
<mwc-button outlined label="outlined" icon="code"></mwc-button>

Warning: Do not attempt to use multiple variant attributes on the same button to achieve intended styles. For example, <mwc-button raised outlined>. Doing so may subject you to future breaking changes. Instead, pick the single variant most appropriate for the use-case and write Sass to customize the buttons individually.

Raised

<mwc-button raised label="raised"></mwc-button>
<mwc-button raised label="raised" icon="code"></mwc-button>

Unelevated

<mwc-button unelevated label="unelevated"></mwc-button>
<mwc-button unelevated label="unelevated" icon="code"></mwc-button>

Dense

<mwc-button dense unelevated label="dense"></mwc-button>
<mwc-button dense unelevated label="dense" icon="code"></mwc-button>

Trailing Icon

<mwc-button label="trailing icon" icon="code" trailingIcon></mwc-button>

Disabled

<mwc-button disabled label="disabled"></mwc-button>
<mwc-button disabled label="disabled" icon="code"></mwc-button>

Customize Colors

mwc-button {
  --mdc-theme-primary: #e9437a;
  --mdc-theme-on-primary: white;
}

API

Slots

Name	Description
icon	Leading icon. Overrides icon property. Use label or the icon property to set the aria-label.
trailingIcon	Icon to show after the label. Overrides trailingIcon property. Use label or the trailingIcon property to set the aria-label.
default	Default content to display between both icons and after label. NOTE: It is highly recommended to set the label property instead of projecting text as it will also set the aria-label

Properties/Attributes

Name	Type	Default	Description
aria-haspopup	string	undefined	Indicates the availability and type of an interactive popup element, such as menu or dialog, that can be triggered by the button.
icon	string	''	Icon to display, and aria-label value when label is not defined.
label	string	''	Label to display for the button, and aria-label.
raised	boolean	false	Creates a contained button that is elevated above the surface.
unelevated	boolean	false	Creates a contained button that is flush with the surface.
outlined	boolean	false	Creates an outlined button that is flush with the surface.
dense	boolean	false	Makes the button text and container slightly smaller.
disabled	boolean	false	Disabled buttons cannot be interacted with and have no visual interaction effect.
trailingIcon	boolean	false	When true, icon will be displayed after label.
'expandContent'	boolean	false	When true, the space after the label and before any trailing icon, where default slotted content is rendered, is expanded to fit the available space inside the button.

Methods

None

Events

None

CSS Custom Properties

Name	Default	Description
--mdc-button-horizontal-padding	filled: 16px outlined: 15px default: 8px	Left and right padding of the button label (for outlined buttons the outline width is automatically subtracted).
--mdc-button-outline-width	1px	width of the outline of an outlined button and attempts to keep the component size constant.
--mdc-button-outline-color		Color of the outline of an outlined element.
--mdc-button-disabled-fill-color	rgba(0,0,0,0.12)	Background fill color of a disabled raised or unelevated button.
--mdc-button-disabled-ink-color	rgba(0,0,0,0.37)	Text color of a disabled button as well as the outline color of a disabled outlined button.
--mdc-button-disabled-outline-color		Sets the color of the outline of a disabled outlined button.
--mdc-button-raised-box-shadow	mdc elevation 2	Sets the box shadow of the raised button.
--mdc-button-raised-box-shadow-hover	mdc elevation 4	Sets the box shadow of the raised button when focused or hovered.
--mdc-button-raised-box-shadow-focus	--mdc-button-raised-box-shadow-hover	Sets the box shadow of the raised button when focused. Note, if button is both focused and hovered, then hover will override focus box-shadow.
--mdc-button-raised-box-shadow-active	mdc elevation 8	Sets the box shadow of the raised button when active.
--mdc-button-raised-box-shadow-disabled	mdc elevation 0	Sets the box shadow of the raised button when disabled.

Global Custom Properties

This component exposes the following global theming custom properties.

Name	Description
--mdc-theme-primary	Color of a flat or outlined button. Background color of a raised button.
--mdc-theme-on-primary	Text color of a raised button.
--mdc-icon-font	Font to use for the icon.
--mdc-typography-button-<PROPERTY>	Styles the typography of the button label.

Elevation values

Elevation Level	CSS Value
2	0px 3px 1px -2px rgba(0, 0, 0, 0.2), 0px 2px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12)
4	0px 2px 4px -1px rgba(0, 0, 0, 0.2), 0px 4px 5px 0px rgba(0, 0, 0, 0.14), 0px 1px 10px 0px rgba(0, 0, 0, 0.12)
8	0px 5px 5px -3px rgba(0, 0, 0, 0.2), 0px 8px 10px 1px rgba(0, 0, 0, 0.14), 0px 3px 14px 2px rgba(0, 0, 0, 0.12)
0	0px 0px 0px 0px rgba(0, 0, 0, 0.2), 0px 0px 0px 0px rgba(0, 0, 0, 0.14), 0px 0px 0px 0px rgba(0, 0, 0, 0.12)

Additional references

• MDC Web: Button