Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div class="wrapper">

  <p><a href="https://24ways.org/2019/making-a-better-custom-select-element/">https://24ways.org/2019/making-a-better-custom-select-element/</a></p>

  <div class="sample">
				<label for="custom-select-input">User Type</label>
				<div id='custom-select-status' class='hidden-visually' aria-live="polite"></div>
				<div class="custom-select" id="myCustomSelect">
					<input type="text" id="custom-select-input" class="select-css">
					<span class="custom-select-icons">
						<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="16" height="16" viewBox="0 0 16 16" focusable="false" aria-hidden="true" id="icon-circle-down" class="icon" role="img">
							<path d="M16 8c0-4.418-3.582-8-8-8s-8 3.582-8 8 3.582 8 8 8 8-3.582 8-8zM1.5 8c0-3.59 2.91-6.5 6.5-6.5s6.5 2.91 6.5 6.5-2.91 6.5-6.5 6.5-6.5-2.91-6.5-6.5z"></path>
							<path d="M4.957 5.543l-1.414 1.414 4.457 4.457 4.457-4.457-1.414-1.414-3.043 3.043z"></path>
						</svg>
						<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="16" height="16" viewBox="0 0 16 16" focusable="false" aria-hidden="true" id="icon-circle-up" class="icon hidden-all" role="img">
							<path d="M0 8c0 4.418 3.582 8 8 8s8-3.582 8-8-3.582-8-8-8-8 3.582-8 8zM14.5 8c0 3.59-2.91 6.5-6.5 6.5s-6.5-2.91-6.5-6.5 2.91-6.5 6.5-6.5 6.5 2.91 6.5 6.5z"></path>
							<path  d="M11.043 10.457l1.414-1.414-4.457-4.457-4.457 4.457 1.414 1.414 3.043-3.043z"></path>
						</svg>									
					</span>
					<ul class="custom-select-options hidden-all" id="custom-select-list">
						<li><strong>User</strong><br>Logged in Users can read locked content and update their profile.</li>
						<li><strong>Author</strong><br>Authors can create, edit and delete their own posts.</li>
						<li><strong>Editor</strong><br>Editors can create, edit and delete all posts by all authors.</li>
						<li><strong>Manager</strong><br>Managers have the same permissions as Editors, plus they can create, edit and delete categories, pages and manage comments.</li>
						<li><strong>Administrator</strong><br>Administrators have full control over the posts, pages, categories, themes and plugins of the site.</li>
					</ul>
				</div>
			</div>
</div>
            
          
!
            
              body {
	font-family: sans-serif;
	background: #eeeeee;
}
.wrapper {
	margin: 1em auto;
  width: 32em;
	text-align: left;
}
.wrapper > p {
  text-align: center;
}

.sample {
	border: 1px solid #eeeeee;
	background: #ffffff;
	max-width: 30em;
	padding: 1em;
	margin-bottom: 1em;
}
.custom-select {
	position: relative;
}
.select-css {
	display: block;
	font-size: 1em;
	font-family: sans-serif;
	font-weight: 700;
	color: #444;
	line-height: 1.3;
	padding: .6em 1.4em .5em .8em;
	width: 100%;
	max-width: 100%;
	box-sizing: border-box;
	margin: 0;
	border: 1px solid #aaa;
	box-shadow: 0 1px 0 1px rgba(0,0,0,.04);
	border-radius: .25em;
	-moz-appearance: none;
	-webkit-appearance: none;
	appearance: none;
	background-color: #fff;
	position: relative;
	z-index: 10;
}
.select-css::-ms-expand {
	display: none;
}
.select-css:hover {
	border-color: #888;
}
.select-css:focus {
	border: 2px dashed blue; 
	color: #222;
	outline: none;
}
.custom-select-icons {
	position: absolute;
	top: 0.5em;
	right: 0.5em;
	z-index: 20;
	border: 1px solid white;
	background: transparent;
}
.custom-select-options {
	border: 1px solid #aaa;
	border-radius: 0 0 0.25em .25em;
	line-height: 1.5;
	margin: 0;
	margin-top: -0.5em;
	padding: 0;
	list-style-type: none;
	font-weight:normal;
	cursor: pointer;
	z-index: 2;
	position: absolute;
	width: calc(100% - 1px);
	background-color: #ffffff;
}
.custom-select-options li {
	padding: 1em;
}
.custom-select-options li:hover {
	background: blue;
	color: #fff;
	border: 1px solid blue;
	border-width: 0 0 0 1px;
}

.custom-select-options li:focus {
	border: 1px solid blue;
}
.icon {
		fill: ButtonText;
		pointer-events: none;
	}
@media screen and (-ms-high-contrast: active) {
	.icon {
		fill: ButtonText;
	}
}
.hidden-all {
	display: none;
}
.hidden-visually {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	overflow: hidden;
	clip: rect(0,0,0,0);
	white-space: nowrap;
	-webkit-clip-path: inset(50%);
	clip-path: inset(50%);
	border: 0;}
            
          
!
            
              // SETUP
// /////////////////////////////////
// assign names to things we'll need to use more than once
const csSelector = document.querySelector('#myCustomSelect') // the input, svg and ul as a group
const csInput = csSelector.querySelector('input')
const csList = csSelector.querySelector('ul')
const csOptions = csList.querySelectorAll('li')
const csIcons = csSelector.querySelectorAll('svg')
const csStatus = document.querySelector('#custom-select-status')
const aOptions = Array.from(csOptions)

// when JS is loaded, set up our starting point
// if JS fails to load, the custom select remains a plain text input
// create and set start point for the state tracker
let csState = "initial"
// inform assistive tech (screen readers) of the names & roles of the elements in our group
csSelector.setAttribute('role', 'combobox') 
csSelector.setAttribute('aria-haspopup', 'listbox') 
csSelector.setAttribute('aria-owns', 'custom-select-list') // container owns the list...
csInput.setAttribute('aria-autocomplete', 'both') 
csInput.setAttribute('aria-controls', 'custom-select-list') // ...but the input controls it
csList.setAttribute('role', 'listbox') 
csOptions.forEach(function(option) {
	option.setAttribute('role', 'option') 
	option.setAttribute('tabindex', "-1")  // make li elements keyboard focusable by script only
})
// set up a message to keep screen reader users informed of what the custom input is for/doing
csStatus.textContent = csOptions.length + " options available. Arrow down to browse or start typing to filter."

// EVENTS
// /////////////////////////////////
csSelector.addEventListener('click', function(e) {
	const currentFocus = findFocus()
	switch(csState) {
		case 'initial' : // if state = initial, toggleOpen and set state to opened
			toggleList('Open')
			setState('opened')
			break
		case 'opened':
			// if state = opened and focus on input, toggleShut and set state to initial
			if (currentFocus === csInput) {
				toggleList('Shut')
				setState('initial')
			} else if (currentFocus.tagName === 'LI') {
				// if state = opened and focus on list, makeChoice, toggleShut and set state to closed
				makeChoice(currentFocus)
				toggleList('Shut')
				setState('closed')
			}
			break
		case 'filtered':
			// if state = filtered and focus on list, makeChoice and set state to closed
			if (currentFocus.tagName === 'LI') {
				makeChoice(currentFocus)
				toggleList('Shut')
				setState('closed')
			} // if state = filtered and focus on input, do nothing (wait for next user input)

			break
		case 'closed': // if state = closed, toggleOpen and set state to filtered? or opened?
			toggleList('Open')
			setState('filtered')
			break
	}
})

csSelector.addEventListener('keyup', function(e) {
	doKeyAction(e.key)
})

document.addEventListener('click', function(e) {
	if (!e.target.closest('#myCustomSelect')) {
		// click outside of the custom group
		toggleList('Shut')
		setState('initial')
	} 
})

// FUNCTIONS 
// /////////////////////////////////

function toggleList(whichWay) {
	if (whichWay === 'Open') {
		csList.classList.remove('hidden-all')
		csSelector.setAttribute('aria-expanded', 'true')
	} else { // === 'Shut'
		csList.classList.add('hidden-all')
		csSelector.setAttribute('aria-expanded', 'false')
	}
}

function findFocus() {
	const focusPoint = document.activeElement
	return focusPoint
}

function moveFocus(fromHere, toThere) {
	// grab the currently showing options, which might have been filtered
	const aCurrentOptions = aOptions.filter(function(option) {
		if (option.style.display === '') {
			return true
		}
	})
	// don't move if all options have been filtered out
	if (aCurrentOptions.length === 0) {
		return
	}
	if (toThere === 'input') {
		csInput.focus()
	}
	// possible start points
	switch(fromHere) {
		case csInput:
			if (toThere === 'forward') {
				aCurrentOptions[0].focus()
			} else if (toThere === 'back') {
				aCurrentOptions[aCurrentOptions.length - 1].focus()
			}
			break
		case csOptions[0]: 
			if (toThere === 'forward') {
				aCurrentOptions[1].focus()
			} else if (toThere === 'back') {
				csInput.focus()
			}
			break
		case csOptions[csOptions.length - 1]:
			if (toThere === 'forward') {
				aCurrentOptions[0].focus()
			} else if (toThere === 'back') {
				aCurrentOptions[aCurrentOptions.length - 2].focus()
			}
			break
		default: // middle list or filtered items 
			const currentItem = findFocus()
			const whichOne = aCurrentOptions.indexOf(currentItem)
			if (toThere === 'forward') {
				const nextOne = aCurrentOptions[whichOne + 1]
				nextOne.focus()
			} else if (toThere === 'back' && whichOne > 0) {
				const previousOne = aCurrentOptions[whichOne - 1]
				previousOne.focus()
			} else { // if whichOne = 0
				csInput.focus()
			}
			break
	}
}

function doFilter() {
	const terms = csInput.value
	const aFilteredOptions = aOptions.filter(function(option) {
		if (option.innerText.toUpperCase().startsWith(terms.toUpperCase())) {
			return true
		}
	})
	csOptions.forEach(option => option.style.display = "none")
	aFilteredOptions.forEach(function(option) {
		option.style.display = ""
	})
	setState('filtered')
	updateStatus(aFilteredOptions.length)
}

function updateStatus(howMany) {
	csStatus.textContent = howMany + " options available."
}

function makeChoice(whichOption) {
	const optionTitle = whichOption.querySelector('strong')
	csInput.value = optionTitle.textContent
	moveFocus(document.activeElement, 'input')
	// update aria-selected, if using
}

function setState(newState) {
	switch (newState) {
		case 'initial': 
			csState = 'initial'
			break
		case 'opened': 
			csState = 'opened'
			break
		case 'filtered':
			csState = 'filtered'
			break
		case 'closed': 
			csState = 'closed'
	}
	// console.log({csState})
}

function doKeyAction(whichKey) {
	const currentFocus = findFocus()
	switch(whichKey) {
		case 'Enter':
			if (csState === 'initial') { 
				// if state = initial, toggleOpen and set state to opened
				toggleList('Open')
				setState('opened')
			} else if (csState === 'opened' && currentFocus.tagName === 'LI') { 
				// if state = opened and focus on list, makeChoice and set state to closed
				makeChoice(currentFocus)
				toggleList('Shut')
				setState('closed')
			} else if (csState === 'opened' && currentFocus === csInput) {
				// if state = opened and focus on input, close it
				toggleList('Shut')
				setState('closed')
			} else if (csState === 'filtered' && currentFocus.tagName === 'LI') {
				// if state = filtered and focus on list, makeChoice and set state to closed
				makeChoice(currentFocus)
				toggleList('Shut')
				setState('closed')
			} else if (csState === 'filtered' && currentFocus === csInput) {
				// if state = filtered and focus on input, set state to opened
				toggleList('Open')
				setState('opened')
			} else { // i.e. csState is closed, or csState is opened/filtered but other focus point?
				// if state = closed, set state to filtered? i.e. open but keep existing input? 
				toggleList('Open')
				setState('filtered')
			}
			break

		case 'Escape':
			// if state = initial, do nothing
			// if state = opened or filtered, set state to initial
			// if state = closed, do nothing
			if (csState === 'opened' || csState === 'filtered') {
				toggleList('Shut')
				setState('initial')
			}
			break

		case 'ArrowDown':
			if (csState === 'initial' || csState === 'closed') {
				// if state = initial or closed, set state to opened and moveFocus to first
				toggleList('Open')
				moveFocus(csInput, 'forward')
				setState('opened')
			} else {
				// if state = opened and focus on input, moveFocus to first
				// if state = opened and focus on list, moveFocus to next/first
				// if state = filtered and focus on input, moveFocus to first
				// if state = filtered and focus on list, moveFocus to next/first
				toggleList('Open')
				moveFocus(currentFocus, 'forward')
			} 
			break
		case 'ArrowUp':
			if (csState === 'initial' || csState === 'closed') {
				// if state = initial, set state to opened and moveFocus to last
				// if state = closed, set state to opened and moveFocus to last
				toggleList('Open')
				moveFocus(csInput, 'back')
				setState('opened')
			} else {
				// if state = opened and focus on input, moveFocus to last
				// if state = opened and focus on list, moveFocus to prev/last
				// if state = filtered and focus on input, moveFocus to last
				// if state = filtered and focus on list, moveFocus to prev/last
				moveFocus(currentFocus, 'back')
			}
			break 
		default:
			if (csState === 'initial') {
				// if state = initial, toggle open, doFilter and set state to filtered
				toggleList('Open')
				doFilter()
				setState('filtered')
			} else if (csState === 'opened') {
				// if state = opened, doFilter and set state to filtered
				doFilter()
				setState('filtered')
			} else if (csState === 'closed') {
				// if state = closed, doFilter and set state to filtered
				doFilter()
				setState('filtered')
			} else { // already filtered
				doFilter()
			}
			break 
	}
}
            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.

Console