中国政府网最新政策

1return await (async () => {2  const input = typeof params === "object" && params !== null ? params : {};3  const limit = readLimit(input.limit, 10, 50);4  const jsonUrl = "https://www.gov.cn/zhengce/zuixin/ZUIXINZHENGCE.json";5 6  const domRows = parseDomList(document, limit);7  if (domRows.length > 0) {8    return domRows;9  }10 11  const response = await fetch(jsonUrl, { credentials: "include" });12  if (!response.ok) {13    throw new Error("无法读取最新政策数据，HTTP " + response.status + "。");14  }15 16  const data = await response.json();17  if (!Array.isArray(data)) {18    throw new Error("最新政策数据格式不是数组。");19  }20 21  return data22    .map((item) => ({23      title: cleanText(decodeHtml(item && item.TITLE)),24      date: cleanText(item && item.DOCRELPUBTIME),25      url: absoluteUrl(item && item.URL, jsonUrl),26    }))27    .filter((item) => item.title && item.url)28    .slice(0, limit)29    .map((item, index) => ({ index: index + 1, ...item }));30 31  function parseDomList(root, maxItems) {32    const nodes = Array.from(33      root.querySelectorAll(".news_box li, .list li, .list_item, .news-list li")34    );35    const rows = [];36    const seen = new Set();37 38    for (const node of nodes) {39      const link = node.querySelector("a[href]");40      if (!link) {41        continue;42      }43 44      const title = cleanText(link.getAttribute("title") || link.textContent);45      const url = absoluteUrl(link.getAttribute("href"), document.baseURI);46      if (!title || !url) {47        continue;48      }49 50      const key = url + "\n" + title;51      if (seen.has(key)) {52        continue;53      }54      seen.add(key);55 56      const dateNode = node.querySelector(".date, time, .time, .pubtime, .sourceTime");57      const dateText = dateNode ? cleanText(dateNode.textContent) : cleanText(node.textContent);58      rows.push({59        index: rows.length + 1,60        title,61        date: extractDate(dateText),62        url,63      });64 65      if (rows.length >= maxItems) {66        break;67      }68    }69 70    return rows;71  }72 73  function readLimit(value, fallback, max) {74    if (value === undefined || value === null || value === "") {75      return fallback;76    }77    const numberValue = Number(value);78    if (!Number.isInteger(numberValue)) {79      throw new Error("参数 limit 必须是整数。");80    }81    if (numberValue < 1 || numberValue > max) {82      throw new Error("参数 limit 必须在 1 到 " + max + " 之间。");83    }84    return numberValue;85  }86 87  function cleanText(value) {88    return String(value || "").replace(/\s+/g, " ").trim();89  }90 91  function decodeHtml(value) {92    const element = document.createElement("textarea");93    element.innerHTML = String(value || "");94    return element.value;95  }96 97  function absoluteUrl(value, baseUrl) {98    if (!value) {99      return "";100    }101    try {102      return new URL(String(value), baseUrl).toString();103    } catch (error) {104      return "";105    }106  }107 108  function extractDate(value) {109    const text = cleanText(value);110    const match =111      text.match(/\d{4}-\d{1,2}-\d{1,2}/) ||112      text.match(/\d{4}年\d{1,2}月\d{1,2}日/) ||113      text.match(/\d{4}[./]\d{1,2}[./]\d{1,2}/);114    return match ? match[0] : "";115  }116})();