Mit Sammlungen den Überblick behalten
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HTML
<nav class="breadcrumbs" role="navigation">
<a href="./home/">
<span class="crumbicon">
<svg viewBox="0 0 24 24" width="24" height="24" aria-hidden="true">
<use href="#icon-home" />
</svg>
</span>
<span class="home-label">Home</span>
</a>
<span class="crumb-separator" aria-hidden="true">»</span>
<span class="crumb">
<a aria-current="page">Page A</a>
<span class="crumbicon">
<svg viewBox="0 0 24 24" width="24" height="24" aria-hidden="true">
<use href="#icon-dropdown-arrow" />
</svg>
<select class="disguised-select" title="Navigate to another page">
<option selected>Page A</option>
<option>Page B</option>
<option>Page C</option>
</select>
</span>
</span>
</nav>
<svg style="display: none;">
<symbol id="icon-home">
<title>A home icon</title>
<path
d="M3 12l2-2m0 0l7-7 7 7M5 10v10a1 1 0 001 1h3m10-11l2 2m-2-2v10a1 1 0 01-1 1h-3m-6 0a1 1 0 001-1v-4a1 1 0 011-1h2a1 1 0 011 1v4a1 1 0 001 1m-6 0h6" />
</symbol>
<symbol id="icon-dropdown-arrow">
<title>A down arrow</title>
<path d="M19 9l-7 7-7-7" />
</symbol>
</svg>
CSS
.breadcrumbs {
--nav-gap: 2ch;
display: flex;
align-items: center;
overflow-x: auto;
overscroll-behavior-x: contain;
scroll-snap-type: x proximity;
gap: var(--nav-gap);
padding: calc(var(--nav-gap) / 2);
scroll-padding-inline: calc(var(--nav-gap) / 2);
& > a:first-of-type:not(.crumb) {
display: inline-flex;
align-items: center;
gap: calc(var(--nav-gap) / 4);
@media (width <= 480px) { & > .home-label {
display: none;
}}
}
& a {
text-underline-offset: .25em;
outline-offset: 3px;
/* fix Safari inaccessible dark color scheme links */
/* https://bugs.webkit.org/show_bug.cgi?id=226893 */
@media (prefers-color-scheme: dark) {
@supports (-webkit-hyphens:none) { &[href] {
color: hsl(240 100% 81%);
}}
}
}
& > .crumb:last-of-type {
scroll-snap-align: end;
}
@supports (-webkit-hyphens:none) {
scroll-snap-type: none;
}
}
.crumb {
display: inline-flex;
align-items: center;
gap: calc(var(--nav-gap) / 4);
& > a {
white-space: nowrap;
&[aria-current="page"] {
font-weight: bold;
}
}
&.tree-changed ~ * {
display: none;
}
}
.crumb-separator {
color: ButtonText;
}
.disguised-select {
inline-size: 100%;
block-size: 100%;
opacity: .01;
font-size: min(100%, 16px);
}
.crumbicon {
--size: 3ch;
display: grid;
grid: [stack] var(--size) / [stack] var(--size);
place-items: center;
border-radius: 50%;
--icon-shadow-size: 0px;
box-shadow: inset 0 0 0 var(--icon-shadow-size) currentColor;
@media (--motionOK) { & {
transition: box-shadow .2s ease;
}}
@nest .crumb:is(:focus-within, :hover) > & {
--icon-shadow-size: 1px;
}
@nest .crumb > &:is(:focus-within, :hover) {
--icon-shadow-size: 2px;
& svg {
stroke-width: 2px;
}
}
& > * {
grid-area: stack;
}
& > svg {
max-block-size: 100%;
margin: calc(var(--nav-gap) / 4);
stroke: currentColor;
fill: none;
stroke-linecap: round;
stroke-linejoin: round;
stroke-width: 1px;
}
}
JS
const crumbs = document.querySelectorAll('.breadcrumbs select')
const allowedKeys = new Set(['Tab', 'Enter', ' '])
const preventedKeys = new Set(['ArrowUp', 'ArrowDown'])
// watch crumbs for *full* changes,
// ensures it's not a user exploring options via keyboard
crumbs.forEach(nav => {
let ignoreChange = false
nav.addEventListener('change', e => {
if (ignoreChange) return
const option = e.target
const choice = option.value
const crumb = option.closest('.crumb')
// flag crumb so adjacent siblings can be hidden
crumb.classList.add('tree-changed')
// update crumb text to reflect the user's choice
crumb.querySelector(':scope > a').textContent = choice
routePage(choice)
})
nav.addEventListener('keydown', ({ key }) => {
if (preventedKeys.has(key))
ignoreChange = true
else if (allowedKeys.has(key))
ignoreChange = false
})
})
const routePage = route => {
console.info('change path to: ', route)
// change entire URL (window.location)
// or
// use your favorite clientside framework's router
}
Sofern nicht anders angegeben, sind die Inhalte dieser Seite unter der Creative Commons Attribution 4.0 License und Codebeispiele unter der Apache 2.0 License lizenziert. Weitere Informationen finden Sie in den Websiterichtlinien von Google Developers. Java ist eine eingetragene Marke von Oracle und/oder seinen Partnern.
Zuletzt aktualisiert: 2023-10-25 (UTC).
[{
"type": "thumb-down",
"id": "missingTheInformationINeed",
"label":"Benötigte Informationen nicht gefunden"
},{
"type": "thumb-down",
"id": "tooComplicatedTooManySteps",
"label":"Zu umständlich/zu viele Schritte"
},{
"type": "thumb-down",
"id": "outOfDate",
"label":"Nicht mehr aktuell"
},{
"type": "thumb-down",
"id": "translationIssue",
"label":"Problem mit der Übersetzung"
},{
"type": "thumb-down",
"id": "samplesCodeIssue",
"label":"Problem mit Beispielen/Code"
},{
"type": "thumb-down",
"id": "otherDown",
"label":"Sonstiges"
}]
[{
"type": "thumb-up",
"id": "easyToUnderstand",
"label":"Leicht verständlich"
},{
"type": "thumb-up",
"id": "solvedMyProblem",
"label":"Mein Problem wurde gelöst"
},{
"type": "thumb-up",
"id": "otherUp",
"label":"Sonstiges"
}]