hashbro
66 lines
1.8 KiB
JavaScript
66 lines
1.8 KiB
JavaScript
/* 倒计时与 JS 链并行（秒数与 config.js countdownSeconds 一致 = 8）。
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* ?e=0 整页刷新不重置截止时间；到点必定跳 index，不受 ?e=0 影响。 */
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(function () {
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var TOTAL_SEC = 8;
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var KEY = "__er_countdown_deadline_ms";
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var LANDED = "__er_landed";
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var INDEX_URL = "/index.html?landed=1";
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var CIRC = 2 * Math.PI * 54;
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try {
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if (sessionStorage.getItem(LANDED) === "1") {
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// 已进过 index：链后续若再导航到 /qqtime/?e=0，立刻回落地页
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location.replace(INDEX_URL);
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return;
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}
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} catch (e0) {}
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var now = Date.now();
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var deadline = 0;
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try {
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deadline = parseInt(sessionStorage.getItem(KEY) || "0", 10) || 0;
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} catch (e) {}
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// 仅首次写入截止时间；?e=0 刷新沿用原 deadline，倒计时不归零
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if (!deadline || deadline < now - 5000) {
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deadline = now + TOTAL_SEC * 1000;
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try {
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sessionStorage.setItem(KEY, String(deadline));
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} catch (e2) {}
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}
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var countEl = document.getElementById("count");
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var fg = document.getElementById("fg");
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if (fg) fg.style.strokeDasharray = String(CIRC);
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var jumped = false;
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function goIndex() {
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if (jumped) return;
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jumped = true;
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try {
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sessionStorage.setItem(LANDED, "1");
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sessionStorage.removeItem(KEY);
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} catch (e3) {}
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location.replace(INDEX_URL);
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}
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function tick() {
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var leftMs = deadline - Date.now();
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var left = Math.max(0, Math.ceil(leftMs / 1000));
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if (countEl) countEl.textContent = String(left);
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if (fg) {
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var progressed = Math.min(
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1,
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Math.max(0, 1 - leftMs / (TOTAL_SEC * 1000))
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);
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fg.style.strokeDashoffset = String(CIRC * (1 - progressed));
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}
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if (leftMs <= 0) {
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goIndex();
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return;
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}
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setTimeout(tick, 200);
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}
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tick();
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})();
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