Learning Progress Interactive Bar Chart
Build an interactive bar chart for a learning-progress scenario: include real content, actionable controls, clear state feedback, and responsive layouts across sizes.
With JavaScript enabled, you can edit, run, and save this example. The fixed source is as follows:
<!doctype html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Learning Progress Interactive Bar Chart</title>
<style>
:root { --ink:#30231f; --paper:#f9efe5; --accent:#8b6fb0; --secondary:#d7a971; --line:color-mix(in srgb, var(--ink) 18%, transparent); --shadow:0 24px 60px color-mix(in srgb, var(--ink) 16%, transparent); color-scheme:light; }
* { box-sizing:border-box; }
html { min-width:320px; background:var(--paper); }
body { min-height:100vh; margin:0; overflow-x:hidden; color:var(--ink); font-family:Baskerville,"Songti SC",serif; background:linear-gradient(90deg,var(--paper) 0 72%,color-mix(in srgb,var(--secondary) 18%,var(--paper)) 72%); }
button,input,select,textarea { color:inherit; font:inherit; }
button,[role="button"],input,select,textarea { accent-color:var(--accent); }
button { cursor:pointer; }
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
[hidden] { display:none !important; }
@media (max-width:700px) { .mast h1 { line-height:1.08 !important; letter-spacing:-.035em !important; overflow-wrap:anywhere; } }
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; } }
.page{width:min(1200px,calc(100% - 38px));margin:auto;padding:76px 0}.mast{display:grid;grid-template-columns:2fr 1fr;gap:7vw;align-items:center;margin-bottom:44px}.mast h1{font-family:Baskerville,"Songti SC",serif;font-weight:800;font-size:clamp(48px,11vw,112px);line-height:.86;letter-spacing:-.06em;margin:0}.eyebrow{display:block;margin-bottom:22px;color:var(--accent);font:800 11px/1 ui-monospace,monospace;letter-spacing:.26em}.intro{max-width:46ch;margin-top:26px;font-size:17px;line-height:1.85}.scenario{align-self:end;padding-bottom:14px;border-bottom:5px solid var(--accent);font-weight:800}.demo{border-radius:0 60px 0 0;box-shadow:-16px 18px 0 color-mix(in srgb,var(--accent) 22%,transparent);position:relative;min-height:460px;overflow:hidden;padding:clamp(30px,6vw,72px);background:color-mix(in srgb,var(--paper) 92%,#fff)}@media(max-width:700px){.page{width:calc(100% - 22px);padding:30px 0}.mast{grid-template-columns:1fr}.demo{padding:20px}}
.panel{padding:22px;border:1px solid var(--line);background:color-mix(in srgb,#fff 58%,transparent)}.stack{display:grid;gap:15px}.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.action{min-height:44px;padding:10px 17px;border:1px solid var(--ink);border-radius:999px;background:transparent}.action.primary,.action.is-active{color:var(--paper);background:var(--accent)}.muted{opacity:.68}.status{min-height:24px;margin-top:15px;color:var(--accent);font-weight:800}.metric{font-size:clamp(30px,6vw,58px);font-weight:900}.meter{height:9px;overflow:hidden;border-radius:999px;background:color-mix(in srgb,var(--ink) 12%,transparent)}.meter>i{display:block;height:100%;background:var(--accent)}.chip{padding:6px 9px;border:1px solid var(--line);border-radius:999px;font-size:12px}
.composition-studio{display:grid;gap:14px}.studio-ruler{display:flex;justify-content:space-between;padding:0 4px;color:color-mix(in srgb,var(--ink) 55%,transparent);font:700 11px/1 ui-monospace,monospace;letter-spacing:.14em}.studio-ruler::before{content:"01 / WORKING PROTOTYPE"}.studio-ruler::after{content:"360 · 768 · 1440"}.composition-studio .demo::after{content:"";position:absolute;right:18px;bottom:18px;width:24px;height:24px;border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);pointer-events:none}
.canvas-shell{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(230px,.6fr);gap:16px}.canvas-shell canvas{width:100%;height:440px;border:1px solid var(--line);border-radius:18px;background:var(--ink)}.canvas-tools{display:grid;align-content:center;gap:16px}.canvas-tools label{display:grid;gap:8px;font-weight:800}@media(max-width:900px){.canvas-shell{grid-template-columns:1fr}.canvas-shell canvas{height:300px}}.drawing-pattern{display:grid;gap:14px}.bar-chart-controller{display:grid;grid-template-columns:1fr 180px 180px auto;gap:14px;align-items:end;padding:18px;border-top:6px solid var(--accent);background:var(--paper)}.bar-chart-controller h3{margin:.2em 0}.bar-chart-controller label{display:grid;gap:7px}.bar-chart-controller select,.bar-chart-controller input{width:100%}@media(max-width:900px){.bar-chart-controller{grid-template-columns:1fr 1fr}.bar-chart-controller header,.bar-chart-controller>output{grid-column:1/-1}}.workflow-session{display:grid;gap:14px}.session-command{display:grid;grid-template-columns:1fr auto minmax(170px,.45fr) auto;gap:16px;align-items:end;padding:18px;border-block:4px double var(--ink)}.session-command h2{margin:.2em 0}.session-command output{font:900 clamp(28px,5vw,54px)/1 ui-monospace,monospace}.session-command label{display:grid;grid-template-columns:1fr auto;gap:7px;font-size:12px}.session-command input{grid-column:1/-1;width:100%}#workflowSessionProgress{height:12px;overflow:hidden;border-radius:2px;background:var(--line)}#workflowSessionProgress i{display:block;width:0;height:100%;background:var(--accent)}.session-stage{min-width:0;transition:filter .25s,transform .25s}.session-stage[data-session-phase="running"]{transform:translateY(-3px)}.session-stage[data-session-phase="paused"]{filter:grayscale(.65)}.session-stage[data-session-phase="complete"]{filter:contrast(.78);opacity:.72}.session-log{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start}.session-log ol{display:flex;flex-wrap:wrap;gap:7px;padding:0;margin:0;list-style:none}.session-log li{padding:5px 8px;border:1px solid var(--line);font-size:12px}@media(max-width:900px){.session-stage{order:-1}.session-command{grid-template-columns:1fr auto}.session-command label{grid-column:1/-1}.session-log{grid-template-columns:1fr}}
</style>
</head>
<body data-aesthetic="magazine" data-composition="studio">
<main class="page">
<header class="mast"><div><span class="eyebrow">magazine / Interactive Bar Chart / INTERMEDIATE</span><h1>Learning Progress Interactive Bar Chart</h1><p class="intro">Build an interactive bar chart for a learning-progress scenario: include real content, actionable controls, clear state feedback, and responsive layouts across sizes.</p></div><span class="scenario">Learning Progress</span></header>
<div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="Learning progress interactive bar chart interactive area"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Learning Progress SESSION</span><h2>Learning cycle 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">Start reviewing</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Learning Cycle 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:drawing-data-viz-bar-chart --><div class="drawing-pattern drawing-pattern-0"><div class="canvas-shell"><canvas id="artboard" width="900" height="440" aria-label="Interactive bar chart canvas" aria-describedby="canvasDescription"></canvas><div class="canvas-tools panel"><span class="eyebrow">CANVAS MODE 1</span><h2>Interactive Bar Chart</h2><label>Complexity <input id="canvasAmount" type="range" min="4" max="28" value="10"></label><button id="redrawCanvas" class="action primary" type="button">Redraw</button><p id="canvasDescription" class="muted">A dark canvas uses two high-contrast colors to draw an interactive bar chart, with the complexity slider determining the number of shapes; everything is generated entirely locally in the browser.</p></div></div><form id="barChartController" class="drawing-controller bar-chart-controller"><header><span class="eyebrow">BAR DATA MODEL</span><h3>Learning Progress Grouped Bar Chart</h3></header><label>Group by<select id="barGrouping"><option value="station">By station</option><option value="period">By Time Period</option><option value="status">By status</option></select></label><label>Baseline<input id="barBaseline" type="range" min="20" max="90" value="55" data-core-bridge="drawing-data-viz-bar-chart"><output id="barBaselineValue">55</output></label><button class="action" type="submit">Normalize and redraw</button><output id="barChartSummary">3 group · benchmark 55</output></form></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:drawing-data-viz-bar-chart */
const canvas = document.querySelector('#artboard'); const context = canvas.getContext('2d'); const amount = document.querySelector('#canvasAmount'); let drawSeed = 1110409142;
function random(){ drawSeed = (drawSeed * 1664525 + 1013904223) >>> 0; return drawSeed / 4294967296; }
function drawCanvas(){ const rect = canvas.getBoundingClientRect(); const ratio = Math.min(2,window.devicePixelRatio || 1); canvas.width = Math.max(320,Math.round(rect.width * ratio)); canvas.height = Math.max(240,Math.round(rect.height * ratio)); context.setTransform(ratio,0,0,ratio,0,0); const width = rect.width; const height = rect.height; context.clearRect(0,0,width,height); context.fillStyle = '#30231f'; context.fillRect(0,0,width,height); const drawingFactor=Number(canvas.dataset.drawingFactor||1); const count=Math.max(1,Math.round(Number(amount.value)*drawingFactor)); drawSeed += 1+Number(canvas.dataset.drawingShift||0); context.globalCompositeOperation=canvas.dataset.drawingBlend||'source-over';
for(let index=0; index<count; index+=1){ const x=random()*width; const y=random()*height; const size=(10+random()*70)*Math.max(.45,drawingFactor); context.beginPath(); context.strokeStyle=index%2?'#8b6fb0':'#d7a971'; context.fillStyle=context.strokeStyle+'88'; context.lineWidth=(2+random()*4)*Math.max(.6,drawingFactor);
const barWidth=Math.max(6,(width-36)/count); context.fillRect(18+index*barWidth,height-size*2,barWidth*.62,size*2);
} context.globalCompositeOperation='source-over'; announce('Canvas generated ' + count + ' graphic elements'); }
document.querySelector('#redrawCanvas').addEventListener('click',drawCanvas); amount.addEventListener('input',drawCanvas); addEventListener('resize',drawCanvas,{passive:true}); drawCanvas();
const barGrouping=document.querySelector('#barGrouping');const barBaseline=document.querySelector('#barBaseline');const barChartState={group:'station',baseline:55,normalized:false};function applyBarChartModel(){barChartState.group=barGrouping.value;barChartState.baseline=Number(barBaseline.value);canvas.dataset.drawingFactor=String(.72+barChartState.baseline/180);canvas.dataset.drawingShift=String(['station','period','status'].indexOf(barChartState.group)*11);document.querySelector('#barBaselineValue').textContent=barChartState.baseline;document.querySelector('#barChartSummary').textContent=(barChartState.group==='station'?'3 sites':barChartState.group==='period'?'4 time periods':'3 states')+' · Benchmark '+barChartState.baseline;drawCanvas();}barGrouping.addEventListener('change',applyBarChartModel);barBaseline.addEventListener('input',applyBarChartModel);document.querySelector('#barChartController').addEventListener('submit',event=>{event.preventDefault();barChartState.normalized=true;amount.value='12';applyBarChartModel();announce('Bar data normalized to baseline');});applyBarChartModel();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"drawing-data-viz-bar-chart","selector":"[data-core-bridge=\"drawing-data-viz-bar-chart\"]","mode":"range","key":"ArrowRight"};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("input",workflowBridgeScheduleCommit);workflowBridgeControl.addEventListener('change',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();const step=Number(workflowBridgeControl.step)||1;const min=workflowBridgeControl.min===''?-Infinity:Number(workflowBridgeControl.min);const max=workflowBridgeControl.max===''?Infinity:Number(workflowBridgeControl.max);let next=Math.min(max,Math.max(min,(Number(workflowBridgeControl.value)||0)+step));if(next===Number(workflowBridgeControl.value))next=Math.max(min,Number(workflowBridgeControl.value)-step);workflowBridgeControl.value=String(next);workflowBridgeControl.dispatchEvent(new Event('input',{bubbles:true}));workflowBridgeControl.dispatchEvent(new Event('change',{bubbles:true}));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?'Learning cycle 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('The learning cycle round has 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>