雪球热门股票榜

1const rawParams = typeof params === "object" && params !== null ? params : {};2 3function assertXueqiuPage() {4  if (!/(^|\.)xueqiu\.com$/i.test(location.hostname)) {5    throw new Error("请先打开 xueqiu.com 页面再执行脚本");6  }7}8 9function readLimit() {10  const value = rawParams.limit ?? 20;11  const limit = Number(value);12  if (!Number.isInteger(limit) || limit < 1 || limit > 50) {13    throw new Error("limit 必须是 1 到 50 的整数");14  }15  return limit;16}17 18function readType() {19  const type = String(rawParams.type ?? "10").trim();20  if (type !== "10" && type !== "12") {21    throw new Error("type 只允许 10（人气榜）或 12（关注榜）");22  }23  return type;24}25 26function firstValue() {27  for (const value of arguments) {28    if (value !== undefined && value !== null && value !== "") return value;29  }30  return null;31}32 33function numericOrText(value) {34  if (value === undefined || value === null || value === "") return null;35  const number = Number(value);36  return Number.isFinite(number) ? number : String(value);37}38 39async function readJson(response) {40  try {41    return await response.json();42  } catch {43    return null;44  }45}46 47function errorDetail(payload, fallback) {48  return firstValue(payload?.error_description, payload?.errorMessage, payload?.message, fallback);49}50 51assertXueqiuPage();52 53const limit = readLimit();54const type = readType();55const url = `https://stock.xueqiu.com/v5/stock/hot_stock/list.json?size=${encodeURIComponent(limit)}&type=${encodeURIComponent(type)}`;56 57const response = await fetch(url, {58  headers: { Accept: "application/json" },59  credentials: "include",60});61 62const payload = await readJson(response);63 64if (!response.ok) {65  throw new Error(`请求雪球热门股票榜失败：${errorDetail(payload, `HTTP ${response.status}`)}`);66}67 68if (payload?.error_code || payload?.error_description) {69  throw new Error(`请求雪球热门股票榜失败：${errorDetail(payload, payload.error_code)}`);70}71 72const items = Array.isArray(payload?.data?.items) ? payload.data.items : [];73if (!items.length) {74  throw new Error("没有读取到雪球热门股票榜数据");75}76 77return items.slice(0, limit).map((item, index) => {78  const symbol = String(firstValue(item.symbol, item.code, "")).trim().toUpperCase();79  return {80    rank: numericOrText(firstValue(item.rank, item.order, index + 1)),81    symbol,82    name: firstValue(item.name, item.stock_name, item.title),83    price: numericOrText(firstValue(item.current, item.price, item.last)),84    change: numericOrText(firstValue(item.chg, item.change_amount, item.changeAmount)),85    changePercent: numericOrText(firstValue(item.percent, item.percentage, item.change_percent, item.changePercent)),86    heat: numericOrText(firstValue(item.value, item.heat, item.hot_value, item.hotValue)),87    rankChange: numericOrText(firstValue(item.rank_change, item.rankChange, item.rank_chg, item.rankDiff, item.rank_diff)),88    url: symbol ? `https://xueqiu.com/S/${symbol}` : null,89  };90});