阅读模式双值区间控制
在阅读模式场景中完成双值区间控制：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。
启用 JavaScript 后可编辑、运行和保存此案例。固定源码如下：
<!doctype html>
<html lang="zh-Hans" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>阅读模式双值区间控制</title>
<style>
:root { --ink:#ecf7f3; --paper:#071310; --accent:#d45f3e; --secondary:#8fc4ad; --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:"Trebuchet MS","PingFang SC",sans-serif; background:radial-gradient(circle at 20% 10%,color-mix(in srgb,var(--accent) 22%,transparent),transparent 35%),radial-gradient(circle at 85% 90%,color-mix(in srgb,var(--secondary) 20%,transparent),transparent 38%),var(--paper); }
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(1160px,calc(100% - 30px));margin:auto;padding:60px 0}.mast{display:flex;justify-content:space-between;border-left:4px solid var(--accent);padding-left:22px;gap:28px;align-items:center;margin-bottom:34px}.mast h1{font-family:"Trebuchet MS","PingFang SC",sans-serif;font-weight:900;font-size:clamp(42px,9vw,94px);text-shadow:0 0 28px color-mix(in srgb,var(--accent) 55%,transparent);margin:0;line-height:.92}.eyebrow{display:block;margin-bottom:14px;color:var(--accent);font:900 11px/1 ui-monospace,monospace;letter-spacing:.2em}.intro{max-width:680px;color:color-mix(in srgb,var(--ink) 68%,transparent);line-height:1.7}.scenario{padding:10px 16px;border:1px solid var(--secondary);border-radius:4px;box-shadow:0 0 20px color-mix(in srgb,var(--secondary) 30%,transparent)}.demo{border-color:color-mix(in srgb,var(--accent) 55%,transparent);border-radius:24px;box-shadow:inset 0 0 40px color-mix(in srgb,var(--accent) 8%,transparent),0 0 60px color-mix(in srgb,var(--secondary) 12%,transparent);position:relative;min-height:410px;overflow:hidden;padding:clamp(24px,4vw,50px);background:color-mix(in srgb,var(--paper) 86%,transparent)}@media(max-width:700px){.mast{display:grid}.page{padding:22px 0}.demo{padding:16px}}
.panel{padding:26px;border:1px solid var(--line);border-radius:2px;background:var(--paper)}.stack{display:grid;gap:28px}.row{display:flex;gap:20px;flex-wrap:wrap}.action{padding:9px 2px;border:0;border-bottom:2px solid var(--line);background:transparent}.action.primary,.action.is-active{border-color:var(--accent);color:var(--accent)}.muted{font-size:14px;line-height:1.9}.status{min-height:20px;margin-top:28px;font-size:13px}.metric{font-size:clamp(40px,9vw,88px);font-weight:500;letter-spacing:-.06em}.meter{height:2px;background:var(--line)}.meter>i{display:block;height:100%;background:var(--accent)}.chip{font-size:11px;letter-spacing:.12em;text-transform:uppercase}
.composition-gallery{margin:0;padding:clamp(8px,2vw,18px);border:1px solid var(--ink);background:color-mix(in srgb,var(--paper) 78%,transparent)}.gallery-caption{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;padding:15px 4px 2px;font-size:12px}.gallery-caption::before,.gallery-caption::after{content:"";height:1px;background:var(--line)}.gallery-caption strong{font:800 11px/1.2 ui-monospace,monospace;letter-spacing:.16em;text-transform:uppercase}.composition-gallery .demo{box-shadow:none}.composition-gallery .demo::before{content:"";position:absolute;inset:10px;border:1px dashed color-mix(in srgb,var(--accent) 36%,transparent);pointer-events:none}
.dual-range-demo{display:grid;gap:24px;max-width:820px;margin:auto;padding:clamp(24px,5vw,54px);border:1px solid var(--line);border-radius:30px;background:var(--paper)}.dual-range-demo h2{margin:.2em 0;font-size:clamp(32px,6vw,64px)}.dual-range-readout{display:flex;justify-content:center;gap:18px;align-items:center}.dual-range-readout output{display:grid;min-width:96px;height:72px;place-items:center;border:2px solid var(--ink);border-radius:16px;font-size:30px;font-weight:900}.dual-track{position:relative;height:34px;background:linear-gradient(90deg,var(--line) var(--from),var(--accent) var(--from) var(--to),var(--line) var(--to));border-radius:999px}.dual-track input{position:absolute;inset:0;width:100%;margin:0;pointer-events:none;background:transparent;appearance:none}.dual-track input::-webkit-slider-thumb{width:28px;height:28px;border:4px solid var(--paper);border-radius:50%;background:var(--ink);box-shadow:0 0 0 2px var(--ink);appearance:none;pointer-events:auto}.dual-track input::-moz-range-thumb{width:22px;height:22px;border:4px solid var(--paper);border-radius:50%;background:var(--ink);pointer-events:auto}.dual-scale{display:flex;justify-content:space-between;font:700 12px/1 ui-monospace,monospace}.dual-range-demo .action{justify-self:start}.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="dark-neon" data-composition="gallery-frame">
<main class="page">
<header class="mast"><div><span class="eyebrow">dark-neon / 双值区间控制 / INTERMEDIATE</span><h1>阅读模式双值区间控制</h1><p class="intro">在阅读模式场景中完成双值区间控制：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。</p></div><span class="scenario">阅读模式</span></header>
<figure class="composition-gallery"><section class="demo" aria-label="阅读模式双值区间控制交互区域"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">阅读模式 SESSION</span><h2>阅读节奏计时台</h2></div><output id="workflowSessionClock">00:45</output><label>回合时长<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>秒</span></label><button id="workflowSessionToggle" class="action primary" type="button">开始阅读</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="阅读节奏进度" 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:controls-selectors-dual-range --><section class="dual-range-demo"><header><span class="eyebrow">DUAL RANGE</span><h2>阅读模式区间</h2><p>两个滑块共同定义最小值和最大值，交叉时自动保持顺序。</p></header><div class="dual-range-readout"><output id="dualMinimum">20</output><span>至</span><output id="dualMaximum">78</output></div><div id="dualTrack" class="dual-track" style="--from:20%;--to:78%"><input id="rangeMinimum" type="range" min="0" max="100" value="20" aria-label="区间最小值" data-core-bridge="controls-selectors-dual-range"><input id="rangeMaximum" type="range" min="0" max="100" value="78" aria-label="区间最大值"></div><div class="dual-scale"><span>0</span><span>50</span><span>100</span></div><button id="dualReset" class="action" type="button">重置区间</button></section><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 个交互检查点</strong><ol id="workflowSessionLaps" aria-label="回合记录"></ol></footer></div><p id="status" class="status" role="status" aria-live="polite"></p></section><figcaption class="gallery-caption"><strong>阅读模式 / GALLERY 03</strong></figcaption></figure>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:controls-selectors-dual-range */
const rangeMinimum=document.querySelector('#rangeMinimum');const rangeMaximum=document.querySelector('#rangeMaximum');const dualTrack=document.querySelector('#dualTrack');function renderDual(changed){let minimum=Number(rangeMinimum.value);let maximum=Number(rangeMaximum.value);if(minimum>maximum){if(changed===rangeMinimum)maximum=minimum;else minimum=maximum;rangeMinimum.value=String(minimum);rangeMaximum.value=String(maximum);}document.querySelector('#dualMinimum').textContent=minimum;document.querySelector('#dualMaximum').textContent=maximum;dualTrack.style.setProperty('--from',minimum+'%');dualTrack.style.setProperty('--to',maximum+'%');rangeMinimum.setAttribute('aria-valuetext','最小值 '+minimum);rangeMaximum.setAttribute('aria-valuetext','最大值 '+maximum);announce('当前区间 '+minimum+' 至 '+maximum);}rangeMinimum.addEventListener('input',()=>renderDual(rangeMinimum));rangeMaximum.addEventListener('input',()=>renderDual(rangeMaximum));document.querySelector('#dualReset').addEventListener('click',()=>{rangeMinimum.value='20';rangeMaximum.value='78';renderDual();});renderDual();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"controls-selectors-dual-range","selector":"[data-core-bridge=\"controls-selectors-dual-range\"]","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+' · 核心版本 '+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+' 个交互检查点';}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?'重新开始':'继续回合';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'阅读节奏回合完成':'回合已暂停');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='暂停回合';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('阅读节奏回合已开始 · '+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('键盘操作');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('核心操作 · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
</script>
</body>
</html>