Navigation and Menus

Knowledge Base Grouped Mega Menu

Complete a grouped mega menu for the knowledge base scenario: includes real content, actionable controls, clear status feedback, and responsive layouts across sizes.

Navigation and MenusGrouped mega menuHTMLCSSJavaScript
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<html lang="en" dir="ltr">
<head>
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  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Knowledge Base Grouped Mega Menu</title>
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  </style>
</head>
<body data-aesthetic="terminal" data-composition="studio">
  <main class="page">
    <header class="mast"><div><span class="eyebrow">terminal / grouped mega menu / BEGINNER</span><h1>Knowledge Base Grouped Mega Menu</h1><p class="intro">Complete a grouped mega menu for the knowledge base scenario: includes real content, actionable controls, clear status feedback, and responsive layouts across sizes.</p></div><span class="scenario">Knowledge Base</span></header>
    <div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="Knowledge base grouped mega menu interaction area"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Knowledge Base SESSION</span><h2>Knowledge Path Timer</h2></div><output id="workflowSessionClock">00:45</output><label>Round Duration<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>sec</span></label><button id="workflowSessionToggle" class="action primary" type="button">Enter Knowledge</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Knowledge Path Progress" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div><section id="workflowCore" class="workflow-core session-stage" data-session-phase="ready" tabindex="-1"><!-- 11DZ_CORE_START:navigation-menus-mega-menu --><div class="mega-shell"><nav class="mega-nav" aria-label="Knowledge base grouped menu"><a href="#mega-home" class="mega-brand">Knowledge Base</a><button id="megaTrigger" type="button" aria-expanded="false" aria-controls="megaPanel" data-core-bridge="navigation-menus-mega-menu">View all content <span aria-hidden="true">⌄</span></button></nav><div id="megaPanel" class="mega-panel" hidden><section><h2>Knowledge base reminder</h2><a href="#mega-0-1">Knowledge Base Reminder 1<small>View guide</small></a><a href="#mega-0-2">Knowledge Base Reminder 2<small>Open tools</small></a><a href="#mega-0-3">Knowledge Base Reminder 3<small>View guide</small></a></section><section><h2>Knowledge Base Collection</h2><a href="#mega-1-1">Knowledge Base Favorites 1<small>View guide</small></a><a href="#mega-1-2">Knowledge base favorites 2<small>Open tools</small></a><a href="#mega-1-3">Knowledge Base Favorites 3<small>View guide</small></a></section><section><h2>Knowledge Base Overview</h2><a href="#mega-2-1">Knowledge Base Overview 1<small>View guide</small></a><a href="#mega-2-2">Knowledge Base Overview 2<small>Open tools</small></a><a href="#mega-2-3">Knowledge Base Overview 3<small>View guide</small></a></section><aside><span class="eyebrow">FEATURED</span><strong>Grouped mega menu</strong><p>Help users anticipate their goal with titles and descriptions.</p></aside></div><section class="mega-preview"><span class="eyebrow">MEGA MENU</span><h2 id="megaSelection">Please choose a destination</h2></section></div><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 interaction checkpoints</strong><ol id="workflowSessionLaps" aria-label="Round Log"></ol></footer></div><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
  </main>
  <script>
    'use strict';
    const statusOutput = document.querySelector('#status');
    const announce = message => { statusOutput.textContent = message; };
    /* 11DZ_CORE_SCRIPT_START:navigation-menus-mega-menu */
const megaTrigger=document.querySelector('#megaTrigger');const megaPanel=document.querySelector('#megaPanel');function setMega(open){megaTrigger.setAttribute('aria-expanded',String(open));megaPanel.hidden=!open;announce(open?'Grouped mega menu expanded':'Grouped mega menu collapsed');}megaTrigger.addEventListener('click',()=>setMega(megaTrigger.getAttribute('aria-expanded')!=='true'));document.querySelector('.mega-brand').addEventListener('click',event=>event.preventDefault());megaPanel.querySelectorAll('a').forEach(link=>link.addEventListener('click',event=>{event.preventDefault();document.querySelector('#megaSelection').textContent=link.firstChild.textContent.trim();setMega(false);}));document.addEventListener('keydown',event=>{if(event.key==='Escape'&&!megaPanel.hidden){setMega(false);megaTrigger.focus();}});
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"navigation-menus-mega-menu","selector":"[data-core-bridge=\"navigation-menus-mega-menu\"]","mode":"click","key":"Enter"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · Core Version '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("click",workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();workflowBridgeControl.click();const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowSessionCore=document.querySelector('#workflowCore');const workflowSessionToggle=document.querySelector('#workflowSessionToggle');const workflowSessionLength=document.querySelector('#workflowSessionLength');const workflowSessionState={phase:'ready',elapsed:0,limit:Number(workflowSessionLength.value),checkpoints:[],timer:null};function workflowSessionFormat(seconds){return String(Math.floor(seconds/60)).padStart(2,'0')+':'+String(seconds%60).padStart(2,'0');}function workflowSessionDrive(){const percent=Math.min(100,Math.round(workflowSessionState.elapsed/workflowSessionState.limit*100));document.querySelector('#workflowSessionClock').textContent=workflowSessionFormat(Math.max(0,workflowSessionState.limit-workflowSessionState.elapsed));const progress=document.querySelector('#workflowSessionProgress');progress.setAttribute('aria-valuenow',String(percent));progress.querySelector('i').style.width=percent+'%';workflowSessionCore.dataset.sessionPhase=workflowSessionState.phase;document.querySelector('#workflowSessionScore').textContent=workflowSessionState.checkpoints.length+' interactive checkpoints';}function workflowSessionLap(label){workflowSessionState.checkpoints.push({label,at:workflowSessionState.elapsed});const item=document.createElement('li');item.textContent=label+' · '+workflowSessionFormat(workflowSessionState.elapsed);document.querySelector('#workflowSessionLaps').append(item);workflowSessionDrive();}function workflowSessionStop(complete=false){clearInterval(workflowSessionState.timer);workflowSessionState.timer=null;workflowSessionState.phase=complete?'complete':'paused';workflowSessionToggle.textContent=complete?'Restart':'Continue round';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'Knowledge path round complete':'Round paused');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='Pause round';workflowSessionToggle.setAttribute('aria-pressed','true');const bridge=workflowBridgeActivate();workflowSessionLap(bridge.summary);clearInterval(workflowSessionState.timer);workflowSessionState.timer=setInterval(()=>{workflowSessionState.elapsed+=1;if(workflowSessionState.elapsed>=workflowSessionState.limit){workflowSessionStop(true);return;}workflowSessionDrive();},1000);workflowSessionDrive();announce('Knowledge Path Round Started · '+bridge.summary);}workflowSessionToggle.addEventListener('click',()=>workflowSessionState.phase==='running'?workflowSessionStop():workflowSessionStart());workflowSessionLength.addEventListener('input',()=>{workflowSessionState.limit=Number(workflowSessionLength.value);workflowSessionState.elapsed=Math.min(workflowSessionState.elapsed,workflowSessionState.limit);workflowSessionDrive();});workflowSessionCore.addEventListener('keydown',event=>{if(event.key==='Enter'||event.key===' '){workflowSessionLap('Keyboard Interaction');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('Core action · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
  </script>
</body>
</html>
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