@dev.mohe/mwc-formfield

<mwc-formfield>

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

A form field is a text caption for MWC input elements including <mwc-checkbox>, <mwc-radio>, and <mwc-switch>.

It is equivalent to the native <label> element in that it forwards user interaction events to the input element. For example, tapping on the label causes the associated input element to toggle and focus.

Material Design Guidelines: Selection controls

Demo

Installation

npm install @dev.mohe/mwc-formfield

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

With checkbox

<mwc-formfield label="Tomato">
  <mwc-checkbox checked></mwc-checkbox>
</mwc-formfield>

<script type="module">
  import '@dev.mohe/mwc-checkbox';
  import '@dev.mohe/mwc-formfield';
</script>

nowrap label with checkbox

<style>
  mwc-formfield[nowrap] {
    width: 150px;
  }
</style>
<mwc-formfield label="really really long label" nowrap>
  <mwc-checkbox></mwc-checkbox>
</mwc-formfield>

<script type="module">
  import '@dev.mohe/mwc-checkbox';
  import '@dev.mohe/mwc-formfield';
</script>

With Radio

<style>
  mwc-formfield {
    display: block;
  }
</style>

<mwc-formfield label="Home">
  <mwc-radio name="location" checked></mwc-radio>
</mwc-formfield>

<mwc-formfield label="Work">
  <mwc-radio name="location"></mwc-radio>
</mwc-formfield>

<script type="module">
  import '@dev.mohe/mwc-radio';
  import '@dev.mohe/mwc-formfield';
</script>

With Switch

<mwc-formfield label="Airplane mode">
  <mwc-switch checked></mwc-switch>
</mwc-formfield>

<script type="module">
  import '@dev.mohe/mwc-switch';
  import '@dev.mohe/mwc-formfield';
</script>

API

Slots

Name	Description
default	The input element that this form field provides a label for.

Properties/Attributes

Name	Type	Description
label	string	The text to display for the label and sets a11y label on input. (visually overriden by slotted label)
alignEnd	boolean	Align the component at the end of the label.
spaceBetween	boolean	Add space between the component and the label as the formfield grows.
nowrap	boolean	Prevents the label from wrapping and overflow text is ellipsed.

Methods

None

Events

None

CSS Custom Properties

Global CSS Custom Properties

This component exposes the following global theming custom properties.

Name	Description
--mdc-typography-body2-<PROPERTY>	Styles the typography of the formfield.

Additional references

• MDC Web Form Fields