Svelte Timezone Picker

You need a timezone picker that will allow the user to pick a timezone from a list. You want it to be accessible and follow the ARIA design pattern for a select.

This is a component that controls all user interactions and state for you. It follows best practices and accessibility guidelines.

The timezones are all valid IANA time zones.

Installation

This module is distributed via npm which is bundled with node and should be installed as one of your project's dependencies:

yarn add svelte-timezone-picker

npm i --save svelte-timezone-picker

If you are going to use the svelte component, make sure you have svelte installed as well.

Usage

Svelte component

To use it in your Svelte app, simply import it as a component.

<script>
  import TimezonePicker from 'svelte-timezone-picker';

  let timezone = 'Europe/London';

  function update(ev) {
    console.log(ev.detail.timezone);
  }
</script>

<TimezonePicker {timezone} on:update="{update}" />

Web component

To use it as a web component, add the index.js file to your page and use it as a regular HTML element.

<!-- use the new timezone-picker element -->
<timezone-picker timezone="Europe/London"></timezone-picker>

<!-- link it as module script -->
<script type="module" src="/path/to/web/index.js"></script>

<!-- listen for the update event on the picker -->
<script>
  window.addEventListener('load', () => {
    const picker = document.querySelector('timezone-picker');
    picker.$on('update', (event) => {
      const { timezone } = event.detail;
      // do stuff with the data
    });
  });
</script>

Props

Property	Type	Required?	Description	Default
timezone	String		The current timezone. Must be a valid timezone from IANA.	Intl.DateTimeFormat().resolvedOptions().timeZone
expanded	Boolean		Whether the dropdown should be automatically expanded or not.	false
allowedTimezones	Array		Control which timezones display in the list. Must be a valid timezone from IANA.	null

Events

Name	Description	Return
update	Dispatched every time you change the timezone.	An object with the selected timezone.

Styling

You can use CSS variables to style the DOM elements of timezone-picker.

:root {
  --color-white: #fff;
  --color-info-900: #076196;
  --color-gray-100: rgba(0, 0, 0, 0.2);
  --color-gray-400: #acacac;
  --color-gray-600: #757575;
  --color-gray-900: #292929;
}

Check out the Demo or play with this on Codesandbox.

License

MIT License - fork, modify and use however you want.