Web Locks API 并发文件访问与跨标签页互斥实践

概述Web Locks API 提供跨页面的协调锁。本文给出能力检测与互斥示例，适用于文件与数据库写入串行化。能力检测与互斥const supportsLocks = !!(navigator.locks && navigator.locks.request); async function withLock(name, fn) { if (!supportsLocks) return fn(); return navigator.locks.request(name, { mode: 'exclusive' }, async () => fn()); } // 示例：串行写入 async function safeWrite(key, writeFn) { return withLock(`write-${key}`, () => writeFn()); }