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Promise 写法（推荐）：配合 async/await，代码从上往下读\nimport fs from 'node:fs/promises';\n\nconst data3 = await fs.readFile('./note.txt', 'utf-8');\n",[1544,1803,1804,1809,1825,1829],{"__ignoreMap":1562},[1566,1805,1806],{"class":1568,"line":1569},[1566,1807,1808],{"class":1613},"// 3. Promise 写法（推荐）：配合 async/await，代码从上往下读\n",[1566,1810,1811,1813,1815,1817,1819,1821,1823],{"class":1568,"line":1617},[1566,1812,1573],{"class":1572},[1566,1814,1577],{"class":1576},[1566,1816,1580],{"class":1572},[1566,1818,1584],{"class":1583},[1566,1820,1588],{"class":1587},[1566,1822,1591],{"class":1583},[1566,1824,1594],{"class":1583},[1566,1826,1827],{"class":1568,"line":1643},[1566,1828,1647],{"emptyLinePlaceholder":1646},[1566,1830,1831,1833,1836,1838,1841,1844,1846,1848,1850,1852,1854,1856,1858,1860,1862,1864,1866],{"class":1568,"line":1650},[1566,1832,1654],{"class":1653},[1566,1834,1835],{"class":1576}," data3 ",[1566,1837,1660],{"class":1583},[1566,1839,1840],{"class":1572}," await",[1566,1842,1843],{"class":1576}," fs",[1566,1845,1775],{"class":1583},[1566,1847,1728],{"class":1663},[1566,1849,1666],{"class":1576},[1566,1851,1591],{"class":1583},[1566,1853,1671],{"class":1587},[1566,1855,1591],{"class":1583},[1566,1857,1676],{"class":1583},[1566,1859,1584],{"class":1583},[1566,1861,1681],{"class":1587},[1566,1863,1591],{"class":1583},[1566,1865,1686],{"class":1576},[1566,1867,1594],{"class":1583},[1535,1869],{},[1526,1871,1873],{"id":1872},"常用文件操作","🛠 常用文件操作",[1531,1875,1876,1877,1879],{},"读取文件用 ",[1544,1878,1728],{},"：",[1557,1881,1884],{"className":1559,"code":1882,"filename":1883,"language":1561,"meta":1562,"style":1562},"import fs from 'node:fs/promises';\n\nconst content = await fs.readFile('./note.txt', 'utf-8');\nconsole.log(content);\n","read.js",[1544,1885,1886,1902,1906,1943],{"__ignoreMap":1562},[1566,1887,1888,1890,1892,1894,1896,1898,1900],{"class":1568,"line":1569},[1566,1889,1573],{"class":1572},[1566,1891,1577],{"class":1576},[1566,1893,1580],{"class":1572},[1566,1895,1584],{"class":1583},[1566,1897,1588],{"class":1587},[1566,1899,1591],{"class":1583},[1566,1901,1594],{"class":1583},[1566,1903,1904],{"class":1568,"line":1617},[1566,1905,1647],{"emptyLinePlaceholder":1646},[1566,1907,1908,1910,1913,1915,1917,1919,1921,1923,1925,1927,1929,1931,1933,1935,1937,1939,1941],{"class":1568,"line":1643},[1566,1909,1654],{"class":1653},[1566,1911,1912],{"class":1576}," content ",[1566,1914,1660],{"class":1583},[1566,1916,1840],{"class":1572},[1566,1918,1843],{"class":1576},[1566,1920,1775],{"class":1583},[1566,1922,1728],{"class":1663},[1566,1924,1666],{"class":1576},[1566,1926,1591],{"class":1583},[1566,1928,1671],{"class":1587},[1566,1930,1591],{"class":1583},[1566,1932,1676],{"class":1583},[1566,1934,1584],{"class":1583},[1566,1936,1681],{"class":1587},[1566,1938,1591],{"class":1583},[1566,1940,1686],{"class":1576},[1566,1942,1594],{"class":1583},[1566,1944,1945,1948,1950,1952,1955],{"class":1568,"line":1650},[1566,1946,1947],{"class":1576},"console",[1566,1949,1775],{"class":1583},[1566,1951,1778],{"class":1663},[1566,1953,1954],{"class":1576},"(content)",[1566,1956,1594],{"class":1583},[1958,1959,1960],"warning",{},[1531,1961,1962,1964,1965,1968,1969,1972],{},[1544,1963,1728],{}," 第二个参数一定要传 ",[1544,1966,1967],{},"'utf-8'"," 编码。不传的话读到的是 Buffer 二进制数据，打印出来是一堆 ",[1544,1970,1971],{},"\u003CBuffer 48 65 ...>","，这是初学者的高频困惑点。",[1531,1974,1975,1976,1979,1980,1879],{},"写入文件用 ",[1544,1977,1978],{},"writeFile","，追加内容用 ",[1544,1981,1982],{},"appendFile",[1557,1984,1987],{"className":1559,"code":1985,"filename":1986,"language":1561,"meta":1562,"style":1562},"import fs from 'node:fs/promises';\n\n// 写入：文件不存在会创建，已存在会被覆盖\nawait fs.writeFile('./note.txt', '第一行内容');\n\n// 追加：在文件末尾接着写，不会覆盖原有内容\nawait fs.appendFile('./note.txt', '\\n第二行内容');\n","write.js",[1544,1988,1989,2005,2009,2014,2046,2050,2055],{"__ignoreMap":1562},[1566,1990,1991,1993,1995,1997,1999,2001,2003],{"class":1568,"line":1569},[1566,1992,1573],{"class":1572},[1566,1994,1577],{"class":1576},[1566,1996,1580],{"class":1572},[1566,1998,1584],{"class":1583},[1566,2000,1588],{"class":1587},[1566,2002,1591],{"class":1583},[1566,2004,1594],{"class":1583},[1566,2006,2007],{"class":1568,"line":1617},[1566,2008,1647],{"emptyLinePlaceholder":1646},[1566,2010,2011],{"class":1568,"line":1643},[1566,2012,2013],{"class":1613},"// 写入：文件不存在会创建，已存在会被覆盖\n",[1566,2015,2016,2019,2021,2023,2025,2027,2029,2031,2033,2035,2037,2040,2042,2044],{"class":1568,"line":1650},[1566,2017,2018],{"class":1572},"await",[1566,2020,1843],{"class":1576},[1566,2022,1775],{"class":1583},[1566,2024,1978],{"class":1663},[1566,2026,1666],{"class":1576},[1566,2028,1591],{"class":1583},[1566,2030,1671],{"class":1587},[1566,2032,1591],{"class":1583},[1566,2034,1676],{"class":1583},[1566,2036,1584],{"class":1583},[1566,2038,2039],{"class":1587},"第一行内容",[1566,2041,1591],{"class":1583},[1566,2043,1686],{"class":1576},[1566,2045,1594],{"class":1583},[1566,2047,2048],{"class":1568,"line":1769},[1566,2049,1647],{"emptyLinePlaceholder":1646},[1566,2051,2052],{"class":1568,"line":1791},[1566,2053,2054],{"class":1613},"// 追加：在文件末尾接着写，不会覆盖原有内容\n",[1566,2056,2058,2060,2062,2064,2066,2068,2070,2072,2074,2076,2078,2081,2084,2086,2088],{"class":1568,"line":2057},7,[1566,2059,2018],{"class":1572},[1566,2061,1843],{"class":1576},[1566,2063,1775],{"class":1583},[1566,2065,1982],{"class":1663},[1566,2067,1666],{"class":1576},[1566,2069,1591],{"class":1583},[1566,2071,1671],{"class":1587},[1566,2073,1591],{"class":1583},[1566,2075,1676],{"class":1583},[1566,2077,1584],{"class":1583},[1566,2079,2080],{"class":1576},"\\n",[1566,2082,2083],{"class":1587},"第二行内容",[1566,2085,1591],{"class":1583},[1566,2087,1686],{"class":1576},[1566,2089,1594],{"class":1583},[1535,2091],{},[1526,2093,2095],{"id":2094},"常用目录操作","🛠 常用目录操作",[1557,2097,2100],{"className":1559,"code":2098,"filename":2099,"language":1561,"meta":1562,"style":1562},"import fs from 'node:fs/promises';\n\n// 创建目录，recursive: true 表示父目录不存在时一并创建\nawait fs.mkdir('./logs/2024', { recursive: true });\n\n// 读取目录，返回文件和子目录名称的数组\nconst files = await fs.readdir('./logs');\nconsole.log(files); // ['2024']\n\n// 删除文件或目录\nawait fs.rm('./logs/2024', { recursive: true });\n","dir.js",[1544,2101,2102,2118,2122,2127,2167,2171,2176,2207,2225,2230,2236],{"__ignoreMap":1562},[1566,2103,2104,2106,2108,2110,2112,2114,2116],{"class":1568,"line":1569},[1566,2105,1573],{"class":1572},[1566,2107,1577],{"class":1576},[1566,2109,1580],{"class":1572},[1566,2111,1584],{"class":1583},[1566,2113,1588],{"class":1587},[1566,2115,1591],{"class":1583},[1566,2117,1594],{"class":1583},[1566,2119,2120],{"class":1568,"line":1617},[1566,2121,1647],{"emptyLinePlaceholder":1646},[1566,2123,2124],{"class":1568,"line":1643},[1566,2125,2126],{"class":1613},"// 创建目录，recursive: true 表示父目录不存在时一并创建\n",[1566,2128,2129,2131,2133,2135,2138,2140,2142,2145,2147,2149,2151,2154,2157,2161,2163,2165],{"class":1568,"line":1650},[1566,2130,2018],{"class":1572},[1566,2132,1843],{"class":1576},[1566,2134,1775],{"class":1583},[1566,2136,2137],{"class":1663},"mkdir",[1566,2139,1666],{"class":1576},[1566,2141,1591],{"class":1583},[1566,2143,2144],{"class":1587},"./logs/2024",[1566,2146,1591],{"class":1583},[1566,2148,1676],{"class":1583},[1566,2150,1622],{"class":1583},[1566,2152,2153],{"class":1781}," recursive",[1566,2155,2156],{"class":1583},":",[1566,2158,2160],{"class":2159},"sPKOg"," true",[1566,2162,1628],{"class":1583},[1566,2164,1686],{"class":1576},[1566,2166,1594],{"class":1583},[1566,2168,2169],{"class":1568,"line":1769},[1566,2170,1647],{"emptyLinePlaceholder":1646},[1566,2172,2173],{"class":1568,"line":1791},[1566,2174,2175],{"class":1613},"// 读取目录，返回文件和子目录名称的数组\n",[1566,2177,2178,2180,2183,2185,2187,2189,2191,2194,2196,2198,2201,2203,2205],{"class":1568,"line":2057},[1566,2179,1654],{"class":1653},[1566,2181,2182],{"class":1576}," files ",[1566,2184,1660],{"class":1583},[1566,2186,1840],{"class":1572},[1566,2188,1843],{"class":1576},[1566,2190,1775],{"class":1583},[1566,2192,2193],{"class":1663},"readdir",[1566,2195,1666],{"class":1576},[1566,2197,1591],{"class":1583},[1566,2199,2200],{"class":1587},"./logs",[1566,2202,1591],{"class":1583},[1566,2204,1686],{"class":1576},[1566,2206,1594],{"class":1583},[1566,2208,2210,2212,2214,2216,2219,2222],{"class":1568,"line":2209},8,[1566,2211,1947],{"class":1576},[1566,2213,1775],{"class":1583},[1566,2215,1778],{"class":1663},[1566,2217,2218],{"class":1576},"(files)",[1566,2220,2221],{"class":1583},";",[1566,2223,2224],{"class":1613}," // ['2024']\n",[1566,2226,2228],{"class":1568,"line":2227},9,[1566,2229,1647],{"emptyLinePlaceholder":1646},[1566,2231,2233],{"class":1568,"line":2232},10,[1566,2234,2235],{"class":1613},"// 删除文件或目录\n",[1566,2237,2239,2241,2243,2245,2248,2250,2252,2254,2256,2258,2260,2262,2264,2266,2268,2270],{"class":1568,"line":2238},11,[1566,2240,2018],{"class":1572},[1566,2242,1843],{"class":1576},[1566,2244,1775],{"class":1583},[1566,2246,2247],{"class":1663},"rm",[1566,2249,1666],{"class":1576},[1566,2251,1591],{"class":1583},[1566,2253,2144],{"class":1587},[1566,2255,1591],{"class":1583},[1566,2257,1676],{"class":1583},[1566,2259,1622],{"class":1583},[1566,2261,2153],{"class":1781},[1566,2263,2156],{"class":1583},[1566,2265,2160],{"class":2159},[1566,2267,1628],{"class":1583},[1566,2269,1686],{"class":1576},[1566,2271,1594],{"class":1583},[1531,2273,2274,2275,2278],{},"来一个综合运用的小例子：找出当前目录下所有 ",[1544,2276,2277],{},".txt"," 文件并打印文件名。",[1557,2280,2283],{"className":1559,"code":2281,"filename":2282,"language":1561,"meta":1562,"style":1562},"import fs from 'node:fs/promises';\n\nconst files = await fs.readdir('./');\n\nfor (const file of files) {\n    if (file.endsWith('.txt')) {\n        console.log('找到文本文件：', file);\n    }\n}\n","find-txt.js",[1544,2284,2285,2301,2305,2334,2338,2359,2387,2414,2419],{"__ignoreMap":1562},[1566,2286,2287,2289,2291,2293,2295,2297,2299],{"class":1568,"line":1569},[1566,2288,1573],{"class":1572},[1566,2290,1577],{"class":1576},[1566,2292,1580],{"class":1572},[1566,2294,1584],{"class":1583},[1566,2296,1588],{"class":1587},[1566,2298,1591],{"class":1583},[1566,2300,1594],{"class":1583},[1566,2302,2303],{"class":1568,"line":1617},[1566,2304,1647],{"emptyLinePlaceholder":1646},[1566,2306,2307,2309,2311,2313,2315,2317,2319,2321,2323,2325,2328,2330,2332],{"class":1568,"line":1643},[1566,2308,1654],{"class":1653},[1566,2310,2182],{"class":1576},[1566,2312,1660],{"class":1583},[1566,2314,1840],{"class":1572},[1566,2316,1843],{"class":1576},[1566,2318,1775],{"class":1583},[1566,2320,2193],{"class":1663},[1566,2322,1666],{"class":1576},[1566,2324,1591],{"class":1583},[1566,2326,2327],{"class":1587},"./",[1566,2329,1591],{"class":1583},[1566,2331,1686],{"class":1576},[1566,2333,1594],{"class":1583},[1566,2335,2336],{"class":1568,"line":1650},[1566,2337,1647],{"emptyLinePlaceholder":1646},[1566,2339,2340,2343,2345,2347,2350,2353,2356],{"class":1568,"line":1769},[1566,2341,2342],{"class":1572},"for",[1566,2344,1749],{"class":1576},[1566,2346,1654],{"class":1653},[1566,2348,2349],{"class":1576}," file ",[1566,2351,2352],{"class":1583},"of",[1566,2354,2355],{"class":1576}," files) ",[1566,2357,2358],{"class":1583},"{\n",[1566,2360,2361,2364,2366,2369,2371,2374,2376,2378,2380,2382,2385],{"class":1568,"line":1791},[1566,2362,2363],{"class":1572},"    if",[1566,2365,1749],{"class":1781},[1566,2367,2368],{"class":1576},"file",[1566,2370,1775],{"class":1583},[1566,2372,2373],{"class":1663},"endsWith",[1566,2375,1666],{"class":1781},[1566,2377,1591],{"class":1583},[1566,2379,2277],{"class":1587},[1566,2381,1591],{"class":1583},[1566,2383,2384],{"class":1781},")) ",[1566,2386,2358],{"class":1583},[1566,2388,2389,2392,2394,2396,2398,2400,2403,2405,2407,2410,2412],{"class":1568,"line":2057},[1566,2390,2391],{"class":1576},"        console",[1566,2393,1775],{"class":1583},[1566,2395,1778],{"class":1663},[1566,2397,1666],{"class":1781},[1566,2399,1591],{"class":1583},[1566,2401,2402],{"class":1587},"找到文本文件：",[1566,2404,1591],{"class":1583},[1566,2406,1676],{"class":1583},[1566,2408,2409],{"class":1576}," file",[1566,2411,1686],{"class":1781},[1566,2413,1594],{"class":1583},[1566,2415,2416],{"class":1568,"line":2209},[1566,2417,2418],{"class":1583},"    }\n",[1566,2420,2421],{"class":1568,"line":2227},[1566,2422,2423],{"class":1583},"}\n",[1535,2425],{},[1526,2427,2429],{"id":2428},"别忘了错误处理","🪤 别忘了错误处理",[1531,2431,2432,2433,2436],{},"文件操作充满不确定性：文件可能不存在、可能没有权限。Promise 写法下如果出错又不处理，异常会直接让进程崩溃退出。规范的写法是用 ",[1544,2434,2435],{},"try/catch"," 包起来：",[1557,2438,2441],{"className":1559,"code":2439,"filename":2440,"language":1561,"meta":1562,"style":1562},"import fs from 'node:fs/promises';\n\ntry {\n    const content = await fs.readFile('./not-exist.txt', 'utf-8');\n    console.log(content);\n} catch (err) {\n    console.log('读取失败：', err.message);\n}\n","safe-read.js",[1544,2442,2443,2459,2463,2470,2510,2527,2539,2570],{"__ignoreMap":1562},[1566,2444,2445,2447,2449,2451,2453,2455,2457],{"class":1568,"line":1569},[1566,2446,1573],{"class":1572},[1566,2448,1577],{"class":1576},[1566,2450,1580],{"class":1572},[1566,2452,1584],{"class":1583},[1566,2454,1588],{"class":1587},[1566,2456,1591],{"class":1583},[1566,2458,1594],{"class":1583},[1566,2460,2461],{"class":1568,"line":1617},[1566,2462,1647],{"emptyLinePlaceholder":1646},[1566,2464,2465,2468],{"class":1568,"line":1643},[1566,2466,2467],{"class":1572},"try",[1566,2469,1766],{"class":1583},[1566,2471,2472,2475,2478,2481,2483,2485,2487,2489,2491,2493,2496,2498,2500,2502,2504,2506,2508],{"class":1568,"line":1650},[1566,2473,2474],{"class":1653},"    const",[1566,2476,2477],{"class":1576}," content",[1566,2479,2480],{"class":1583}," =",[1566,2482,1840],{"class":1572},[1566,2484,1843],{"class":1576},[1566,2486,1775],{"class":1583},[1566,2488,1728],{"class":1663},[1566,2490,1666],{"class":1781},[1566,2492,1591],{"class":1583},[1566,2494,2495],{"class":1587},"./not-exist.txt",[1566,2497,1591],{"class":1583},[1566,2499,1676],{"class":1583},[1566,2501,1584],{"class":1583},[1566,2503,1681],{"class":1587},[1566,2505,1591],{"class":1583},[1566,2507,1686],{"class":1781},[1566,2509,1594],{"class":1583},[1566,2511,2512,2514,2516,2518,2520,2523,2525],{"class":1568,"line":1769},[1566,2513,1772],{"class":1576},[1566,2515,1775],{"class":1583},[1566,2517,1778],{"class":1663},[1566,2519,1666],{"class":1781},[1566,2521,2522],{"class":1576},"content",[1566,2524,1686],{"class":1781},[1566,2526,1594],{"class":1583},[1566,2528,2529,2531,2534,2537],{"class":1568,"line":1791},[1566,2530,1794],{"class":1583},[1566,2532,2533],{"class":1572}," catch",[1566,2535,2536],{"class":1576}," (err) ",[1566,2538,2358],{"class":1583},[1566,2540,2541,2543,2545,2547,2549,2551,2554,2556,2558,2561,2563,2566,2568],{"class":1568,"line":2057},[1566,2542,1772],{"class":1576},[1566,2544,1775],{"class":1583},[1566,2546,1778],{"class":1663},[1566,2548,1666],{"class":1781},[1566,2550,1591],{"class":1583},[1566,2552,2553],{"class":1587},"读取失败：",[1566,2555,1591],{"class":1583},[1566,2557,1676],{"class":1583},[1566,2559,2560],{"class":1576}," err",[1566,2562,1775],{"class":1583},[1566,2564,2565],{"class":1576},"message",[1566,2567,1686],{"class":1781},[1566,2569,1594],{"class":1583},[1566,2571,2572],{"class":1568,"line":2209},[1566,2573,2423],{"class":1583},[1531,2575,2576],{},"这样即使文件不存在，程序也只是打印一条友好的错误信息，然后继续运行。",[1535,2578],{},[1526,2580,2582],{"id":2581},"小节总结","🧾 小节总结",[2584,2585,2586,2592,2598,2619,2627],"ul",{},[2587,2588,2589,2591],"li",{},[1544,2590,1546],{}," 是 Node.js 内置的文件系统模块，负责文件和目录的读写操作。",[2587,2593,2594,2595,2597],{},"三种风格中推荐 ",[1544,2596,1588],{}," 配合 async/await，不阻塞且代码清晰。",[2587,2599,2600,2601,2603,2604,2606,2607,2609,2610,2612,2613,2615,2616,2618],{},"常用方法：",[1544,2602,1728],{}," 读、",[1544,2605,1978],{}," 覆盖写、",[1544,2608,1982],{}," 追加、",[1544,2611,2137],{}," 建目录、",[1544,2614,2193],{}," 读目录、",[1544,2617,2247],{}," 删除。",[2587,2620,2621,2623,2624,2626],{},[1544,2622,1728],{}," 记得传 ",[1544,2625,1967],{},"，否则读到的是 Buffer 二进制数据。",[2587,2628,2629,2630,2632],{},"文件操作必须用 ",[1544,2631,2435],{}," 处理异常，避免进程崩溃。",[1535,2634],{},[1526,2636,2638],{"id":2637},"知识问答","❓ 知识问答",[1531,2640,2641],{},[1549,2642,2643],{},"Q1：readFile 读出来是一堆数字怎么办？",[1531,2645,2646,2647,2649,2650,2652,2653,2656],{},"那是 Buffer 二进制数据，说明忘了传编码。给 ",[1544,2648,1728],{}," 加上第二个参数 ",[1544,2651,1967],{},"，或者对结果调用 ",[1544,2654,2655],{},".toString()","。",[1531,2658,2659],{},[1549,2660,2661],{},"Q2：writeFile 会把原文件覆盖吗？",[1531,2663,2664,2665,2667,2668,2670,2671,2674],{},"会。想保留原内容就往末尾写，请用 ",[1544,2666,1982],{},"；或者给 ",[1544,2669,1978],{}," 传 ",[1544,2672,2673],{},"{ flag: 'a' }"," 选项。",[1531,2676,2677],{},[1549,2678,2679],{},"Q3：同步写法是不是一定不能用？",[1531,2681,2682,2683,2686],{},"不是绝对。比如脚本启动时读一次配置文件，用 ",[1544,2684,2685],{},"readFileSync"," 简单直接，是可以接受的。但在服务器处理请求的代码里要避免，它会阻塞其他请求。",[1531,2688,2689],{},[1549,2690,2691],{},"Q4：怎么判断文件是否存在？",[1531,2693,2694,2695,2697,2698,2701],{},"可以直接 ",[1544,2696,2435],{}," 包住读取操作，出错即不存在；也可以用同步的 ",[1544,2699,2700],{},"fs.existsSync('./note.txt')","，它返回布尔值，适合只做判断的场景。",[1535,2703],{},[1526,2705,2707],{"id":2706},"小练习","🧪 小练习",[1531,2709,2710,2711,2714,2715,2718,2719,2722],{},"写一个日记工具：每次运行 ",[1544,2712,2713],{},"node diary.js","，就往 ",[1544,2716,2717],{},"diary.txt"," 里追加一行带日期的内容，例如 ",[1544,2720,2721],{},"2024-01-01：今天学会了 fs 模块","。要求用 Promise 写法并处理异常。",[1557,2724,2727],{"className":1559,"code":2725,"filename":2726,"language":1561,"meta":1562,"style":1562},"import fs from 'node:fs/promises';\n\n// 请在这里编写代码\n","diary.js",[1544,2728,2729,2745,2749],{"__ignoreMap":1562},[1566,2730,2731,2733,2735,2737,2739,2741,2743],{"class":1568,"line":1569},[1566,2732,1573],{"class":1572},[1566,2734,1577],{"class":1576},[1566,2736,1580],{"class":1572},[1566,2738,1584],{"class":1583},[1566,2740,1588],{"class":1587},[1566,2742,1591],{"class":1583},[1566,2744,1594],{"class":1583},[1566,2746,2747],{"class":1568,"line":1617},[1566,2748,1647],{"emptyLinePlaceholder":1646},[1566,2750,2751],{"class":1568,"line":1643},[1566,2752,2753],{"class":1613},"// 请在这里编写代码\n",[1535,2755],{},[1531,2757,2758],{},"🎉 恭喜你已经掌握文件读写技能！下一篇我们学习 path 路径模块，解决文件路径拼接的各种坑。",[2760,2761,2762],"style",{},"html pre.shiki code .s8pZq, html code.shiki .s8pZq{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sndM8, html code.shiki .sndM8{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .s86vT, html code.shiki .s86vT{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sIEYB, html code.shiki .sIEYB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .syuKq, html code.shiki .syuKq{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .s50WR, html code.shiki .s50WR{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .swgpB, html code.shiki .swgpB{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sK9QF, html code.shiki .sK9QF{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}html pre.shiki code .sd2Uz, html code.shiki .sd2Uz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sPKOg, html code.shiki .sPKOg{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}",{"title":1562,"searchDepth":1617,"depth":1617,"links":2764},[2765,2766,2767,2768,2769,2770,2771,2772,2773],{"id":1528,"depth":1617,"text":1529},{"id":1539,"depth":1617,"text":1540},{"id":1599,"depth":1617,"text":1600},{"id":1872,"depth":1617,"text":1873},{"id":2094,"depth":1617,"text":2095},{"id":2428,"depth":1617,"text":2429},{"id":2581,"depth":1617,"text":2582},{"id":2637,"depth":1617,"text":2638},{"id":2706,"depth":1617,"text":2707},"掌握 Node.js fs 模块读写文件、操作目录的常用方法，理解同步、回调、Promise 三种写法的区别。","md",null,{},{"title":1126},{"title":1521,"description":2774},"8arrJJJYyj",[2782,2784],{"title":1122,"path":1123,"stem":1124,"description":2783,"children":-1},"掌握 Node.js 中 CommonJS 和 ES Module 两种模块化方案的写法、区别与选择建议。",{"title":1130,"path":1131,"stem":1132,"description":2785,"children":-1},"掌握 Node.js path 模块拼接和解析路径的常用方法，分清 __dirname 与 process.cwd() 的区别。",1784715110195]