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        const datePart = currentUrl.pathname.match(/\/(\d{4}\d{2})\/(\d{2})(?:\.html)?$/);
        if (!datePart) {
            console.error("Invalid URL format");
            return;
        }

        var year = parseInt(datePart[1].slice(0, 4), 10);
        var month = parseInt(datePart[1].slice(4, 6), 10);
        var day = parseInt(datePart[2], 10);

        document.addEventListener('keydown', function(event) {
            if (event.key === 'ArrowLeft') {
                // 向左箭头，跳转到