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537yaha
17 lines
579 B
TypeScript
17 lines
579 B
TypeScript
/**
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* 访客 ID：写入 localStorage，保证为可安全表示的正整数。
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* 旧版 `${Date.now()}${random}` 拼接过长会导致精度问题，此处会迁移为新格式。
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*/
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export function getOrCreateVisitorId(): number {
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const stored = window.localStorage.getItem("visitor_id");
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if (stored) {
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const parsed = Number.parseInt(stored, 10);
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if (!Number.isNaN(parsed) && parsed > 0) {
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return parsed;
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}
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}
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const id = Date.now() * 1000 + Math.floor(Math.random() * 100000);
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window.localStorage.setItem("visitor_id", String(id));
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return id;
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}
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