Browser Media and Device Capabilities

Audio Booth Full-Screen Stage Controls

Complete full-screen stage control in the audio booth scenario: includes realistic content, actionable controls, clear status feedback, and a responsive layout across sizes.

Browser Media and Device CapabilitiesFullscreen Stage ControlsHTMLCSSBrowser API
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    <header class="mast"><div><span class="eyebrow">magazine / Full-screen stage controls / BEGINNER</span><h1>Audio Booth Full-Screen Stage Controls</h1><p class="intro">Complete full-screen stage control in the audio booth scenario: includes realistic content, actionable controls, clear status feedback, and a responsive layout across sizes.</p></div><span class="scenario">Audio Booth</span></header>
    <div class="composition-split"><aside class="split-note"><b>CASE 02</b><span>Master responsive fullscreen stage control semantics, responsive composition, keyboard interaction, and state synchronization.</span></aside><section class="demo" aria-label="Audio booth full-screen stage control interaction area"><div id="similarityShell" class="similarity-shell" data-review-state="focus"><header class="similarity-head"><div><span class="eyebrow">Audio Booth / REVIEW STUDIO</span><h2>Fullscreen Stage Control Review Console</h2><p>Place the main case inside a separate review shell, and additionally record the observation mode, checkpoints, and current conclusion.</p></div><output id="similarityState">Ready to start review</output></header><div class="similarity-layout"><aside class="similarity-console"><fieldset class="similarity-modes"><legend>Review perspective</legend><button class="action primary" type="button" data-review-view="focus">Focus on the main view</button><button class="action" type="button" data-review-view="compare">Checklist</button><button class="action" type="button" data-review-view="audit">Record on Site</button></fieldset><label>Observation Density<input id="similarityDensity" type="range" min="84" max="124" value="100"><output id="similarityDensityValue">100%</output></label><label class="similarity-pin"><input id="similarityPin" type="checkbox"> Pin current checkpoint</label><ol id="similarityChecklist" class="similarity-checklist"><li>Audio booth alert</li><li>Audio Booth Favorites</li><li>Audio Booth Overview</li><li>Audio booth plan</li></ol><button id="similarityCapture" class="action primary" type="button">Checkpoint Records</button><ol id="similarityLog" class="similarity-log"><li>Waiting for the first check record</li></ol></aside><section class="similarity-stage"><div id="similarityDeck" class="similarity-deck"><article data-active="true"><span>01</span><strong>Audio booth alert</strong><p>Check whether the status change is visible</p></article><article><span>02</span><strong>Audio Booth Favorites</strong><p>Confirm keyboard and click entry points are consistent</p></article><article><span>03</span><strong>Audio Booth Overview</strong><p>Check whether the layout falls back on narrow screens</p></article><article><span>04</span><strong>Audio booth plan</strong><p>Record current review conclusion</p></article></div><div id="similarityCoreShell" class="similarity-core-shell"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Audio booth SESSION</span><h2>Audio booth timer station</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">Ability to Start Recording</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Audio booth 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:browser-media-device-fullscreen-stage --><div class="fullscreen-studio"><section id="fullscreenStage" tabindex="0"><span class="eyebrow">FULLSCREEN STAGE</span><ol id="fullscreenSlides"><li data-slide="0"><b>01</b><h2>Preparing environment</h2><p>Audio Booth · Use the left and right arrow keys to switch views.</p></li><li data-slide="1" hidden><b>02</b><h2>Main demo flow</h2><p>Audio Booth · Use the left and right arrow keys to switch views.</p></li><li data-slide="2" hidden><b>03</b><h2>Check fallback state</h2><p>Audio Booth · Use the left and right arrow keys to switch views.</p></li></ol><div id="fullscreenProgress" role="progressbar" aria-label="Presentation Page Progress" aria-valuemin="1" aria-valuemax="3" aria-valuenow="1"><i></i></div></section><aside><output id="fullscreenState">Normal window</output><p>Fullscreen can only be triggered by the user; even if denied, you can still continue paging.</p><div><button id="fullscreenBack" class="action" type="button">Previous page</button><button id="fullscreenNext" class="action" type="button" data-core-bridge="browser-media-device-fullscreen-stage">Next page</button><button id="fullscreenToggle" class="action primary" type="button">Enter Full Screen</button></div></aside></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></div></section></div></div><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
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const similarityShell=document.querySelector('#similarityShell');const similarityState=document.querySelector('#similarityState');const similarityDensity=document.querySelector('#similarityDensity');const similarityDensityValue=document.querySelector('#similarityDensityValue');const similarityPin=document.querySelector('#similarityPin');const similarityChecklistItems=[...document.querySelectorAll('#similarityChecklist li')];const similarityDeckItems=[...document.querySelectorAll('#similarityDeck article')];const similarityLog=document.querySelector('#similarityLog');const similarityNotes=["Audio booth alert","Audio Booth Favorites","Audio Booth Overview","Audio booth plan"];const similarityCore=document.querySelector('#workflowCore');let similarityCaptures=0;function similaritySetActive(index){similarityDeckItems.forEach((item,itemIndex)=>{if(itemIndex===index)item.setAttribute('data-active','true');else item.removeAttribute('data-active');});}function similarityRender(reason){const version=similarityCore?.dataset.workflowVersion||'0';const density=Number(similarityDensity.value);similarityShell.style.setProperty('--similarity-density',String(density));similarityShell.dataset.pinned=String(similarityPin.checked);similarityDensityValue.textContent=density+'%';similarityChecklistItems.forEach((item,index)=>item.classList.toggle('is-done',index<similarityCaptures));similaritySetActive(Math.min(similarityDeckItems.length-1,similarityCaptures%similarityDeckItems.length));similarityState.textContent=reason+' · Core Version '+version+(similarityPin.checked?' · Fixed':'');}document.querySelectorAll('[data-review-view]').forEach(button=>button.addEventListener('click',()=>{document.querySelectorAll('[data-review-view]').forEach(item=>item.classList.toggle('primary',item===button));similarityShell.dataset.reviewState=button.dataset.reviewView;similarityRender('Switched to'+button.textContent);announce('Review view:'+button.textContent);}));similarityDensity.addEventListener('input',()=>{similarityRender('Observation density has been updated');announce('Observation Density '+similarityDensity.value+'%');});similarityPin.addEventListener('change',()=>{similarityRender(similarityPin.checked?'Current checkpoint is fixed':'Current checkpoint unlocked');announce(similarityPin.checked?'Pinned current checkpoint':'Checkpoint Unpinned');});document.querySelector('#similarityCapture').addEventListener('click',()=>{const note=similarityNotes[similarityCaptures%similarityNotes.length];const version=similarityCore?.dataset.workflowVersion||'0';similarityCaptures+=1;const item=document.createElement('li');item.textContent='Checkpoint '+similarityCaptures+' · '+note+' · Core Version '+version;const empty=similarityLog.querySelector('li')?.textContent==='Waiting for the first check record';if(empty)similarityLog.replaceChildren(item);else similarityLog.prepend(item);while(similarityLog.children.length>6)similarityLog.lastElementChild.remove();similarityRender('Checkpoint recorded '+similarityCaptures);announce('Checkpoint recorded '+similarityCaptures+' · '+note);});similarityCore?.addEventListener('focusin',()=>similarityRender('Main view focused'));similarityCore?.addEventListener('click',()=>similarityRender('Main view interaction occurred'));similarityRender('Ready to start review');
  </script>
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