国家法律法规数据库最新法规

1return await (async () => {2  const input = typeof params === "object" && params !== null ? params : {};3  const limit = readLimit(input.limit, 10, 50);4 5  if (location.hostname !== "flk.npc.gov.cn") {6    throw new Error("请先打开国家法律法规数据库页面：https://flk.npc.gov.cn/index.html");7  }8 9  try {10    sessionStorage.setItem("searchConditions", "");11    localStorage.setItem("halfMonth", "false");12  } catch (error) {13    // Storage can be unavailable in strict browser modes.14  }15 16  await ensureSearchRoute();17  const items = await waitForItems(limit, 12000);18  if (items.length === 0) {19    throw new Error("未读取到法规列表。请确认页面已进入 /search 并完成加载。");20  }21  return items;22 23  async function ensureSearchRoute() {24    if (location.pathname === "/search") {25      return;26    }27 28    history.pushState({}, "", "/search");29    window.dispatchEvent(new PopStateEvent("popstate", { state: history.state }));30    await delay(500);31  }32 33  async function waitForItems(maxItems, timeoutMs) {34    const startedAt = Date.now();35    while (Date.now() - startedAt < timeoutMs) {36      const rows = parseItems(document, maxItems);37      if (rows.length > 0) {38        return rows;39      }40      await delay(300);41    }42    return parseItems(document, maxItems);43  }44 45  function parseItems(root, maxItems) {46    const nodes = Array.from(root.querySelectorAll(".result-item"));47    const rows = [];48 49    for (const node of nodes) {50      const titleNode =51        node.querySelector(".title .title-content") ||52        node.querySelector(".title-content") ||53        node.querySelector(".title");54      const title = cleanText(titleNode ? titleNode.textContent : "");55      if (!title) {56        continue;57      }58 59      const descNodes = Array.from(node.querySelectorAll(".desc div"));60      const descTexts = descNodes.map((item) => cleanText(item.textContent)).filter(Boolean);61      const link = node.querySelector("a[href]");62 63      rows.push({64        index: rows.length + 1,65        title,66        status: cleanText((node.querySelector(".status") || {}).textContent),67        publishDate: fieldValue(descTexts, "公布日期"),68        effectiveDate: fieldValue(descTexts, "施行日期"),69        lawType: cleanText((node.querySelector(".desc .type") || {}).textContent) || descTexts[2] || "",70        authority:71          cleanText((node.querySelector(".desc .department") || {}).textContent) ||72          descTexts[3] ||73          "",74        url: link ? absoluteUrl(link.getAttribute("href"), document.baseURI) : location.href,75      });76 77      if (rows.length >= maxItems) {78        break;79      }80    }81 82    return rows;83  }84 85  function fieldValue(items, label) {86    const item = items.find((value) => value.indexOf(label) >= 0);87    if (!item) {88      return "";89    }90    return cleanText(item.replace(label, "").replace(/^[:：]\s*/, ""));91  }92 93  function delay(ms) {94    return new Promise((resolve) => setTimeout(resolve, ms));95  }96 97  function readLimit(value, fallback, max) {98    if (value === undefined || value === null || value === "") {99      return fallback;100    }101    const numberValue = Number(value);102    if (!Number.isInteger(numberValue)) {103      throw new Error("参数 limit 必须是整数。");104    }105    if (numberValue < 1 || numberValue > max) {106      throw new Error("参数 limit 必须在 1 到 " + max + " 之间。");107    }108    return numberValue;109  }110 111  function cleanText(value) {112    return String(value || "").replace(/\s+/g, " ").trim();113  }114 115  function absoluteUrl(value, baseUrl) {116    if (!value) {117      return "";118    }119    try {120      return new URL(String(value), baseUrl).toString();121    } catch (error) {122      return "";123    }124  }125})();