Function writeJSON

notes.js:24–43

(key, value)

    }

    function writeJSON(key, value) {
        try {
            localStorage.setItem(key, JSON.stringify(value));
        } catch (e) {
            if (e.name === 'QuotaExceededError') {
                // 存储空间不足，尝试清理过期数据
                console.warn('Storage quota exceeded, attempting to clean up...');
                cleanupStorageSpace();
                // 再次尝试保存
                try {
                    localStorage.setItem(key, JSON.stringify(value));
                } catch (e2) {
                    alert('存储空间不足，请清理浏览器数据或删除一些笔记');
                    console.error('Notes save failed after cleanup:', e2);
                }
            } else {
                console.error('Notes save failed:', e);
            }
        }
    }

    function generateId(prefix) {
        return prefix + '_' + Date.now() + '_' + Math.random().toString(36).slice(2, 8);