查看“︁测试20”︁的源代码

<html>
<div class="zhbus-led-wrapper">
  <div class="zhbus-led-casing">
    <div class="zhbus-screw tl"></div><div class="zhbus-screw tr"></div>
    <div class="zhbus-screw bl"></div><div class="zhbus-screw br"></div>

    <div class="zhbus-led-screen">
      <!-- 24行精准硬切 LED 点阵遮罩层（消除半亮灯珠） -->
      <div class="zhbus-led-overlay"></div>
      
      <!-- 滚动文本轨 -->
      <div class="zhbus-led-track" id="zhbusLedTrack">
        <div class="zhbus-led-text" id="zhbusLedContent">加载中...</div>
        <div class="zhbus-led-text" id="zhbusLedContentClone">加载中...</div>
      </div>
    </div>
  </div>
</div>

<style>
/* 容器：500px 宽度 */
.zhbus-led-wrapper {
  width: 500px;
  margin: 15px auto;
  box-sizing: border-box;
}

/* 500px 外壳，高度 70px */
.zhbus-led-casing {
  width: 500px;
  height: 70px;
  background: linear-gradient(180deg, #23252b 0%, #111215 100%);
  border-radius: 6px;
  padding: 8px 10px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.85), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  border: 2px solid #30333d;
  position: relative;
  box-sizing: border-box;
}

/* 螺丝钉细节 */
.zhbus-screw {
  position: absolute;
  width: 5px;
  height: 5px;
  background: radial-gradient(circle, #777 30%, #333 80%);
  border-radius: 50%;
  box-shadow: inset 0 0 1px #000;
}
.zhbus-screw.tl { top: 4px; left: 4px; }
.zhbus-screw.tr { top: 4px; right: 4px; }
.zhbus-screw.bl { bottom: 4px; left: 4px; }
.zhbus-screw.br { bottom: 4px; right: 4px; }

/* 显示屏主区域：高度 50px */
.zhbus-led-screen {
  position: relative;
  background-color: #000000;
  border-radius: 3px;
  overflow: hidden;
  border: 2px solid #0a0a0c;
  height: 50px;
  display: flex;
  align-items: center;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.98);
}

/* 硬边缘点阵遮罩层：0.7px 到 0.75px 极窄过渡，彻底杜绝灯珠亮一半 */
.zhbus-led-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 10;
  pointer-events: none;
  background-image: 
    radial-gradient(circle at 1.04px 1.04px, transparent 0.7px, #000000 0.75px);
  background-size: 2.08px 2.08px;
}

/* 滚动轨 */
.zhbus-led-track {
  display: flex;
  white-space: nowrap;
  position: absolute;
  will-change: transform;
}

/* 专为真 LED 效果优化的字体与高对比度渲染 */
.zhbus-led-text {
  font-family: "SimSun-ExtB", "NSimSun", "SimSun", "Courier New", monospace !important;
  font-size: 42px;
  font-weight: 900;
  color: #ffcc00;
  letter-spacing: 2px;
  line-height: 50px;
  padding-right: 40px;
  display: flex;
  align-items: center;
  
  /* 强制关闭字体平滑（抗锯齿），还原真实像素点 */
  -webkit-font-smoothing: none !important;
  -moz-osx-font-smoothing: unset !important;
  font-smooth: never !important;

  /* 使用 300% 对比度滤镜进行二值化，使字边缘要么全亮要么完全不亮 */
  filter: contrast(300%) drop-shadow(0 0 1px #ffc400);
}

/* ※ 间隔符 */
.zhbus-sep {
  color: #ffcc00;
  font-size: 34px;
  margin: 0 8px;
  font-weight: 900;
  filter: contrast(300%);
}

@keyframes zhbusMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
</style>

<script>
(function() {
  const API_URL = "https://apiv2.zhbuswx.com/ContentPublish/GetAll?appType=notice&pageIndex=1&pageSize=20";
  const FIXED_FIRST = "珠海巴士频道公交调整信息";
  const SEP = '<span class="zhbus-sep">※</span>';

  const FALLBACK = [
    "关于调整公交201路、K4路运行路线及停靠站点的公告",
    "关于优化调整部分公交线路首尾班车时间的通告",
    "关于针对雷雨恶劣天气实施公交应急保障预案的通知",
    "关于乘车码刷码系统升级维护的温馨提示",
    "关于开通高考专线及学生高考免费乘车政策的通告"
  ];

  async function fetchWithTimeout(resource, options = {}) {
    const { timeout = 3000 } = options;
    const controller = new AbortController();
    const id = setTimeout(() => controller.abort(), timeout);
    const response = await fetch(resource, {
      ...options,
      signal: controller.signal
    });
    clearTimeout(id);
    return response;
  }

  async function initZhbusLed() {
    let titles = [];
    try {
      const res = await fetchWithTimeout(API_URL, { timeout: 3000 });
      if (!res.ok) throw new Error('网络响应异常');
      const data = await res.json();
      const items = data.data || data.Data || (data.data && data.data.list) || data;
      if (Array.isArray(items)) {
        titles = items.map(i => i.Title || i.title).filter(Boolean);
      }
      if (!titles.length) throw new Error('解析数据为空');
    } catch(e) {
      titles = FALLBACK;
    }

    const allTitles = [FIXED_FIRST, ...titles];
    const fullHtml = SEP + allTitles.join(SEP) + SEP;

    const track = document.getElementById('zhbusLedTrack');
    const content = document.getElementById('zhbusLedContent');
    const contentClone = document.getElementById('zhbusLedContentClone');

    if (!track || !content || !contentClone) return;

    content.innerHTML = fullHtml;
    contentClone.innerHTML = fullHtml;

    const tempDiv = document.createElement("div");
    tempDiv.innerHTML = fullHtml;
    const charCount = (tempDiv.textContent || tempDiv.innerText || "").length;
    const duration = Math.max(charCount / 3, 2);

    track.style.animation = `zhbusMarquee ${duration}s linear infinite`;
  }

  if (document.readyState === 'complete' || document.readyState === 'interactive') {
    setTimeout(initZhbusLed, 100);
  } else {
    document.addEventListener('DOMContentLoaded', initZhbusLed);
  }
})();
</script>
</html>