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Person('小红');\np.sayHello();\n","typescript",[1544,1751,1752,1757,1765,1778,1782,1798,1810,1814,1818,1830,1856,1860,1864,1868,1893],{"__ignoreMap":1554},[1558,1753,1754],{"class":1560,"line":1561},[1558,1755,1756],{"class":1564},"// TS 类定义，带类型\n",[1558,1758,1759,1761,1763],{"class":1560,"line":1568},[1558,1760,1546],{"class":1571},[1558,1762,1575],{"class":1574},[1558,1764,1579],{"class":1578},[1558,1766,1767,1770,1773,1776],{"class":1560,"line":1582},[1558,1768,1769],{"class":1634},"    name",[1558,1771,1772],{"class":1578},":",[1558,1774,1775],{"class":1574}," string",[1558,1777,1615],{"class":1578},[1558,1779,1780],{"class":1560,"line":1600},[1558,1781,1628],{"emptyLinePlaceholder":1627},[1558,1783,1784,1786,1788,1790,1792,1794,1796],{"class":1560,"line":1618},[1558,1785,1585],{"class":1571},[1558,1787,1588],{"class":1578},[1558,1789,1592],{"class":1591},[1558,1791,1772],{"class":1578},[1558,1793,1775],{"class":1574},[1558,1795,1595],{"class":1578},[1558,1797,1579],{"class":1578},[1558,1799,1800,1802,1804,1806,1808],{"class":1560,"line":1624},[1558,1801,1603],{"class":1578},[1558,1803,1592],{"class":1606},[1558,1805,1609],{"class":1578},[1558,1807,1612],{"class":1606},[1558,1809,1615],{"class":1578},[1558,1811,1812],{"class":1560,"line":1631},[1558,1813,1621],{"class":1578},[1558,1815,1816],{"class":1560,"line":1643},[1558,1817,1628],{"emptyLinePlaceholder":1627},[1558,1819,1820,1822,1825,1828],{"class":1560,"line":1679},[1558,1821,1635],{"class":1634},[1558,1823,1824],{"class":1578},"():",[1558,1826,1827],{"class":1574}," void",[1558,1829,1579],{"class":1578},[1558,1831,1832,1834,1836,1838,1840,1842,1844,1846,1848,1850,1852,1854],{"class":1560,"line":1684},[1558,1833,1646],{"class":1606},[1558,1835,1649],{"class":1578},[1558,1837,1653],{"class":1652},[1558,1839,1588],{"class":1634},[1558,1841,1658],{"class":1578},[1558,1843,1662],{"class":1661},[1558,1845,1658],{"class":1578},[1558,1847,1667],{"class":1578},[1558,1849,1670],{"class":1578},[1558,1851,1592],{"class":1606},[1558,1853,1595],{"class":1634},[1558,1855,1615],{"class":1578},[1558,1857,1858],{"class":1560,"line":1690},[1558,1859,1621],{"class":1578},[1558,1861,1862],{"class":1560,"line":1695},[1558,1863,1687],{"class":1578},[1558,1865,1866],{"class":1560,"line":1725},[1558,1867,1628],{"emptyLinePlaceholder":1627},[1558,1869,1871,1873,1875,1877,1879,1881,1883,1885,1887,1889,1891],{"class":1560,"line":1870},14,[1558,1872,1698],{"class":1571},[1558,1874,1701],{"class":1606},[1558,1876,1704],{"class":1578},[1558,1878,1707],{"class":1578},[1558,1880,1575],{"class":1652},[1558,1882,1588],{"class":1606},[1558,1884,1658],{"class":1578},[1558,1886,1716],{"class":1661},[1558,1888,1658],{"class":1578},[1558,1890,1595],{"class":1606},[1558,1892,1615],{"class":1578},[1558,1894,1896,1898,1900,1902,1904],{"class":1560,"line":1895},15,[1558,1897,1530],{"class":1606},[1558,1899,1649],{"class":1578},[1558,1901,1732],{"class":1652},[1558,1903,1638],{"class":1606},[1558,1905,1615],{"class":1578},[1907,1908,1909],"tip",{},[1530,1910,1911],{},"TS 中类的成员变量和方法都可以加类型声明，帮助在编译时发现错误。",[1534,1913],{},[1525,1915,1917],{"id":1916},"publicprivateprotected-访问修饰符","🔐 public、private、protected 访问修饰符",[1530,1919,1920,1921,1924],{},"这是 TS 在类上的",[1741,1922,1923],{},"独家特性","。ES6 本身不支持访问修饰符，所有属性和方法默认都是公开的。",[1926,1927,1928,1938,1944],"ul",{},[1929,1930,1931,1934,1935,1937],"li",{},[1544,1932,1933],{},"public"," 表示公有，可以从类外访问（TS 默认就是 ",[1544,1936,1933],{},"）",[1929,1939,1940,1943],{},[1544,1941,1942],{},"private"," 表示私有，只能在类内部访问",[1929,1945,1946,1949],{},[1544,1947,1948],{},"protected"," 表示受保护，只能在类内部和子类访问",[1549,1951,1953],{"className":1747,"code":1952,"language":1749,"meta":1554,"style":1554},"class Person {\n    public name: string; // 公有属性\n    private age: number; // 私有属性\n    protected gender: string; // 受保护属性\n\n    constructor(name: string, age: number, gender: string) {\n        this.name = name;\n        this.age = age;\n        this.gender = gender;\n    }\n\n    public sayHello(): void {\n        console.log(`Hi, I'm ${this.name}`);\n    }\n\n    private getAge(): number {\n        return this.age;\n    }\n}\n",[1544,1954,1955,1963,1980,1998,2015,2019,2052,2064,2077,2090,2094,2098,2111,2142,2146,2150,2164,2177,2182],{"__ignoreMap":1554},[1558,1956,1957,1959,1961],{"class":1560,"line":1561},[1558,1958,1546],{"class":1571},[1558,1960,1575],{"class":1574},[1558,1962,1579],{"class":1578},[1558,1964,1965,1968,1970,1972,1974,1977],{"class":1560,"line":1568},[1558,1966,1967],{"class":1571},"    public",[1558,1969,1612],{"class":1634},[1558,1971,1772],{"class":1578},[1558,1973,1775],{"class":1574},[1558,1975,1976],{"class":1578},";",[1558,1978,1979],{"class":1564}," // 公有属性\n",[1558,1981,1982,1985,1988,1990,1993,1995],{"class":1560,"line":1582},[1558,1983,1984],{"class":1571},"    private",[1558,1986,1987],{"class":1634}," age",[1558,1989,1772],{"class":1578},[1558,1991,1992],{"class":1574}," number",[1558,1994,1976],{"class":1578},[1558,1996,1997],{"class":1564}," // 私有属性\n",[1558,1999,2000,2003,2006,2008,2010,2012],{"class":1560,"line":1600},[1558,2001,2002],{"class":1571},"    protected",[1558,2004,2005],{"class":1634}," gender",[1558,2007,1772],{"class":1578},[1558,2009,1775],{"class":1574},[1558,2011,1976],{"class":1578},[1558,2013,2014],{"class":1564}," // 受保护属性\n",[1558,2016,2017],{"class":1560,"line":1618},[1558,2018,1628],{"emptyLinePlaceholder":1627},[1558,2020,2021,2023,2025,2027,2029,2031,2034,2036,2038,2040,2042,2044,2046,2048,2050],{"class":1560,"line":1624},[1558,2022,1585],{"class":1571},[1558,2024,1588],{"class":1578},[1558,2026,1592],{"class":1591},[1558,2028,1772],{"class":1578},[1558,2030,1775],{"class":1574},[1558,2032,2033],{"class":1578},",",[1558,2035,1987],{"class":1591},[1558,2037,1772],{"class":1578},[1558,2039,1992],{"class":1574},[1558,2041,2033],{"class":1578},[1558,2043,2005],{"class":1591},[1558,2045,1772],{"class":1578},[1558,2047,1775],{"class":1574},[1558,2049,1595],{"class":1578},[1558,2051,1579],{"class":1578},[1558,2053,2054,2056,2058,2060,2062],{"class":1560,"line":1631},[1558,2055,1603],{"class":1578},[1558,2057,1592],{"class":1606},[1558,2059,1609],{"class":1578},[1558,2061,1612],{"class":1606},[1558,2063,1615],{"class":1578},[1558,2065,2066,2068,2071,2073,2075],{"class":1560,"line":1643},[1558,2067,1603],{"class":1578},[1558,2069,2070],{"class":1606},"age",[1558,2072,1609],{"class":1578},[1558,2074,1987],{"class":1606},[1558,2076,1615],{"class":1578},[1558,2078,2079,2081,2084,2086,2088],{"class":1560,"line":1679},[1558,2080,1603],{"class":1578},[1558,2082,2083],{"class":1606},"gender",[1558,2085,1609],{"class":1578},[1558,2087,2005],{"class":1606},[1558,2089,1615],{"class":1578},[1558,2091,2092],{"class":1560,"line":1684},[1558,2093,1621],{"class":1578},[1558,2095,2096],{"class":1560,"line":1690},[1558,2097,1628],{"emptyLinePlaceholder":1627},[1558,2099,2100,2102,2105,2107,2109],{"class":1560,"line":1695},[1558,2101,1967],{"class":1571},[1558,2103,2104],{"class":1634}," sayHello",[1558,2106,1824],{"class":1578},[1558,2108,1827],{"class":1574},[1558,2110,1579],{"class":1578},[1558,2112,2113,2115,2117,2119,2121,2124,2127,2130,2133,2135,2138,2140],{"class":1560,"line":1725},[1558,2114,1646],{"class":1606},[1558,2116,1649],{"class":1578},[1558,2118,1653],{"class":1652},[1558,2120,1588],{"class":1634},[1558,2122,2123],{"class":1578},"`",[1558,2125,2126],{"class":1661},"Hi, I'm ",[1558,2128,2129],{"class":1578},"${",[1558,2131,2132],{"class":1578},"this.",[1558,2134,1592],{"class":1606},[1558,2136,2137],{"class":1578},"}`",[1558,2139,1595],{"class":1634},[1558,2141,1615],{"class":1578},[1558,2143,2144],{"class":1560,"line":1870},[1558,2145,1621],{"class":1578},[1558,2147,2148],{"class":1560,"line":1895},[1558,2149,1628],{"emptyLinePlaceholder":1627},[1558,2151,2153,2155,2158,2160,2162],{"class":1560,"line":2152},16,[1558,2154,1984],{"class":1571},[1558,2156,2157],{"class":1634}," getAge",[1558,2159,1824],{"class":1578},[1558,2161,1992],{"class":1574},[1558,2163,1579],{"class":1578},[1558,2165,2167,2171,2173,2175],{"class":1560,"line":2166},17,[1558,2168,2170],{"class":2169},"s8pZq","        return",[1558,2172,1670],{"class":1578},[1558,2174,2070],{"class":1606},[1558,2176,1615],{"class":1578},[1558,2178,2180],{"class":1560,"line":2179},18,[1558,2181,1621],{"class":1578},[1558,2183,2185],{"class":1560,"line":2184},19,[1558,2186,1687],{"class":1578},[2188,2189,2190],"warning",{},[1530,2191,2192],{},"访问修饰符只在 TS 编译阶段起作用，编译成 JS 后并不会真的限制访问，但可以强制大家遵守访问规则。",[1534,2194],{},[1525,2196,2198],{"id":2197},"继承与实现","🧬 继承与实现",[1530,2200,2201,2202,2205],{},"继承是 ES6 也支持的基本特性。用 ",[1544,2203,2204],{},"extends"," 关键字实现子类继承父类。",[1549,2207,2209],{"className":1551,"code":2208,"language":1553,"meta":1554,"style":1554},"// ES6 继承示例\nclass Animal {\n    constructor(name) {\n        this.name = name;\n    }\n    move() {\n        console.log(this.name + ' 在移动');\n    }\n}\n\nclass Dog extends Animal {\n    bark() {\n        console.log('汪汪');\n    }\n}\n\nconst dog = new Dog('小白');\ndog.move();\ndog.bark();\n",[1544,2210,2211,2216,2225,2237,2249,2253,2262,2290,2294,2298,2302,2316,2325,2346,2350,2354,2358,2384,2398],{"__ignoreMap":1554},[1558,2212,2213],{"class":1560,"line":1561},[1558,2214,2215],{"class":1564},"// ES6 继承示例\n",[1558,2217,2218,2220,2223],{"class":1560,"line":1568},[1558,2219,1546],{"class":1571},[1558,2221,2222],{"class":1574}," Animal",[1558,2224,1579],{"class":1578},[1558,2226,2227,2229,2231,2233,2235],{"class":1560,"line":1582},[1558,2228,1585],{"class":1571},[1558,2230,1588],{"class":1578},[1558,2232,1592],{"class":1591},[1558,2234,1595],{"class":1578},[1558,2236,1579],{"class":1578},[1558,2238,2239,2241,2243,2245,2247],{"class":1560,"line":1600},[1558,2240,1603],{"class":1578},[1558,2242,1592],{"class":1606},[1558,2244,1609],{"class":1578},[1558,2246,1612],{"class":1606},[1558,2248,1615],{"class":1578},[1558,2250,2251],{"class":1560,"line":1618},[1558,2252,1621],{"class":1578},[1558,2254,2255,2258,2260],{"class":1560,"line":1624},[1558,2256,2257],{"class":1634},"    move",[1558,2259,1638],{"class":1578},[1558,2261,1579],{"class":1578},[1558,2263,2264,2266,2268,2270,2272,2274,2276,2278,2281,2284,2286,2288],{"class":1560,"line":1631},[1558,2265,1646],{"class":1606},[1558,2267,1649],{"class":1578},[1558,2269,1653],{"class":1652},[1558,2271,1588],{"class":1634},[1558,2273,2132],{"class":1578},[1558,2275,1592],{"class":1606},[1558,2277,1667],{"class":1578},[1558,2279,2280],{"class":1578}," '",[1558,2282,2283],{"class":1661}," 在移动",[1558,2285,1658],{"class":1578},[1558,2287,1595],{"class":1634},[1558,2289,1615],{"class":1578},[1558,2291,2292],{"class":1560,"line":1643},[1558,2293,1621],{"class":1578},[1558,2295,2296],{"class":1560,"line":1679},[1558,2297,1687],{"class":1578},[1558,2299,2300],{"class":1560,"line":1684},[1558,2301,1628],{"emptyLinePlaceholder":1627},[1558,2303,2304,2306,2309,2312,2314],{"class":1560,"line":1690},[1558,2305,1546],{"class":1571},[1558,2307,2308],{"class":1574}," Dog",[1558,2310,2311],{"class":1571}," extends",[1558,2313,2222],{"class":1574},[1558,2315,1579],{"class":1578},[1558,2317,2318,2321,2323],{"class":1560,"line":1695},[1558,2319,2320],{"class":1634},"    bark",[1558,2322,1638],{"class":1578},[1558,2324,1579],{"class":1578},[1558,2326,2327,2329,2331,2333,2335,2337,2340,2342,2344],{"class":1560,"line":1725},[1558,2328,1646],{"class":1606},[1558,2330,1649],{"class":1578},[1558,2332,1653],{"class":1652},[1558,2334,1588],{"class":1634},[1558,2336,1658],{"class":1578},[1558,2338,2339],{"class":1661},"汪汪",[1558,2341,1658],{"class":1578},[1558,2343,1595],{"class":1634},[1558,2345,1615],{"class":1578},[1558,2347,2348],{"class":1560,"line":1870},[1558,2349,1621],{"class":1578},[1558,2351,2352],{"class":1560,"line":1895},[1558,2353,1687],{"class":1578},[1558,2355,2356],{"class":1560,"line":2152},[1558,2357,1628],{"emptyLinePlaceholder":1627},[1558,2359,2360,2362,2365,2367,2369,2371,2373,2375,2378,2380,2382],{"class":1560,"line":2166},[1558,2361,1698],{"class":1571},[1558,2363,2364],{"class":1606}," dog ",[1558,2366,1704],{"class":1578},[1558,2368,1707],{"class":1578},[1558,2370,2308],{"class":1652},[1558,2372,1588],{"class":1606},[1558,2374,1658],{"class":1578},[1558,2376,2377],{"class":1661},"小白",[1558,2379,1658],{"class":1578},[1558,2381,1595],{"class":1606},[1558,2383,1615],{"class":1578},[1558,2385,2386,2389,2391,2394,2396],{"class":1560,"line":2179},[1558,2387,2388],{"class":1606},"dog",[1558,2390,1649],{"class":1578},[1558,2392,2393],{"class":1652},"move",[1558,2395,1638],{"class":1606},[1558,2397,1615],{"class":1578},[1558,2399,2400,2402,2404,2407,2409],{"class":1560,"line":2184},[1558,2401,2388],{"class":1606},[1558,2403,1649],{"class":1578},[1558,2405,2406],{"class":1652},"bark",[1558,2408,1638],{"class":1606},[1558,2410,1615],{"class":1578},[1530,2412,2413],{},"TS 继承写法类似，但可以加类型声明：",[1549,2415,2417],{"className":1747,"code":2416,"language":1749,"meta":1554,"style":1554},"class Animal {\n    name: string;\n    constructor(name: string) {\n        this.name = name;\n    }\n    move(): void {\n        console.log(this.name + ' 在移动');\n    }\n}\n\nclass Dog extends Animal {\n    bark(): void {\n        console.log('汪汪');\n    }\n}\n\nconst dog = new Dog('小白');\ndog.move();\ndog.bark();\n",[1544,2418,2419,2427,2437,2453,2465,2469,2479,2505,2509,2513,2517,2529,2539,2559,2563,2567,2571,2595,2607],{"__ignoreMap":1554},[1558,2420,2421,2423,2425],{"class":1560,"line":1561},[1558,2422,1546],{"class":1571},[1558,2424,2222],{"class":1574},[1558,2426,1579],{"class":1578},[1558,2428,2429,2431,2433,2435],{"class":1560,"line":1568},[1558,2430,1769],{"class":1634},[1558,2432,1772],{"class":1578},[1558,2434,1775],{"class":1574},[1558,2436,1615],{"class":1578},[1558,2438,2439,2441,2443,2445,2447,2449,2451],{"class":1560,"line":1582},[1558,2440,1585],{"class":1571},[1558,2442,1588],{"class":1578},[1558,2444,1592],{"class":1591},[1558,2446,1772],{"class":1578},[1558,2448,1775],{"class":1574},[1558,2450,1595],{"class":1578},[1558,2452,1579],{"class":1578},[1558,2454,2455,2457,2459,2461,2463],{"class":1560,"line":1600},[1558,2456,1603],{"class":1578},[1558,2458,1592],{"class":1606},[1558,2460,1609],{"class":1578},[1558,2462,1612],{"class":1606},[1558,2464,1615],{"class":1578},[1558,2466,2467],{"class":1560,"line":1618},[1558,2468,1621],{"class":1578},[1558,2470,2471,2473,2475,2477],{"class":1560,"line":1624},[1558,2472,2257],{"class":1634},[1558,2474,1824],{"class":1578},[1558,2476,1827],{"class":1574},[1558,2478,1579],{"class":1578},[1558,2480,2481,2483,2485,2487,2489,2491,2493,2495,2497,2499,2501,2503],{"class":1560,"line":1631},[1558,2482,1646],{"class":1606},[1558,2484,1649],{"class":1578},[1558,2486,1653],{"class":1652},[1558,2488,1588],{"class":1634},[1558,2490,2132],{"class":1578},[1558,2492,1592],{"class":1606},[1558,2494,1667],{"class":1578},[1558,2496,2280],{"class":1578},[1558,2498,2283],{"class":1661},[1558,2500,1658],{"class":1578},[1558,2502,1595],{"class":1634},[1558,2504,1615],{"class":1578},[1558,2506,2507],{"class":1560,"line":1643},[1558,2508,1621],{"class":1578},[1558,2510,2511],{"class":1560,"line":1679},[1558,2512,1687],{"class":1578},[1558,2514,2515],{"class":1560,"line":1684},[1558,2516,1628],{"emptyLinePlaceholder":1627},[1558,2518,2519,2521,2523,2525,2527],{"class":1560,"line":1690},[1558,2520,1546],{"class":1571},[1558,2522,2308],{"class":1574},[1558,2524,2311],{"class":1571},[1558,2526,2222],{"class":1574},[1558,2528,1579],{"class":1578},[1558,2530,2531,2533,2535,2537],{"class":1560,"line":1695},[1558,2532,2320],{"class":1634},[1558,2534,1824],{"class":1578},[1558,2536,1827],{"class":1574},[1558,2538,1579],{"class":1578},[1558,2540,2541,2543,2545,2547,2549,2551,2553,2555,2557],{"class":1560,"line":1725},[1558,2542,1646],{"class":1606},[1558,2544,1649],{"class":1578},[1558,2546,1653],{"class":1652},[1558,2548,1588],{"class":1634},[1558,2550,1658],{"class":1578},[1558,2552,2339],{"class":1661},[1558,2554,1658],{"class":1578},[1558,2556,1595],{"class":1634},[1558,2558,1615],{"class":1578},[1558,2560,2561],{"class":1560,"line":1870},[1558,2562,1621],{"class":1578},[1558,2564,2565],{"class":1560,"line":1895},[1558,2566,1687],{"class":1578},[1558,2568,2569],{"class":1560,"line":2152},[1558,2570,1628],{"emptyLinePlaceholder":1627},[1558,2572,2573,2575,2577,2579,2581,2583,2585,2587,2589,2591,2593],{"class":1560,"line":2166},[1558,2574,1698],{"class":1571},[1558,2576,2364],{"class":1606},[1558,2578,1704],{"class":1578},[1558,2580,1707],{"class":1578},[1558,2582,2308],{"class":1652},[1558,2584,1588],{"class":1606},[1558,2586,1658],{"class":1578},[1558,2588,2377],{"class":1661},[1558,2590,1658],{"class":1578},[1558,2592,1595],{"class":1606},[1558,2594,1615],{"class":1578},[1558,2596,2597,2599,2601,2603,2605],{"class":1560,"line":2179},[1558,2598,2388],{"class":1606},[1558,2600,1649],{"class":1578},[1558,2602,2393],{"class":1652},[1558,2604,1638],{"class":1606},[1558,2606,1615],{"class":1578},[1558,2608,2609,2611,2613,2615,2617],{"class":1560,"line":2184},[1558,2610,2388],{"class":1606},[1558,2612,1649],{"class":1578},[1558,2614,2406],{"class":1652},[1558,2616,1638],{"class":1606},[1558,2618,1615],{"class":1578},[1534,2620],{},[2622,2623,2625],"h3",{"id":2624},"实现implement接口","实现（Implement）接口",[1530,2627,2628],{},"实现接口是 TS 独有的概念，ES6 没有接口。接口用于定义类必须实现的属性和方法，属于静态类型检查。",[1549,2630,2632],{"className":1747,"code":2631,"language":1749,"meta":1554,"style":1554},"interface Flyable {\n    fly(): void;\n}\n\nclass Bird implements Flyable {\n    fly(): void {\n        console.log('我会飞');\n    }\n}\n",[1544,2633,2634,2644,2655,2659,2663,2677,2687,2708,2712],{"__ignoreMap":1554},[1558,2635,2636,2639,2642],{"class":1560,"line":1561},[1558,2637,2638],{"class":1571},"interface",[1558,2640,2641],{"class":1574}," Flyable",[1558,2643,1579],{"class":1578},[1558,2645,2646,2649,2651,2653],{"class":1560,"line":1568},[1558,2647,2648],{"class":1634},"    fly",[1558,2650,1824],{"class":1578},[1558,2652,1827],{"class":1574},[1558,2654,1615],{"class":1578},[1558,2656,2657],{"class":1560,"line":1582},[1558,2658,1687],{"class":1578},[1558,2660,2661],{"class":1560,"line":1600},[1558,2662,1628],{"emptyLinePlaceholder":1627},[1558,2664,2665,2667,2670,2673,2675],{"class":1560,"line":1618},[1558,2666,1546],{"class":1571},[1558,2668,2669],{"class":1574}," Bird",[1558,2671,2672],{"class":1571}," implements",[1558,2674,2641],{"class":1574},[1558,2676,1579],{"class":1578},[1558,2678,2679,2681,2683,2685],{"class":1560,"line":1624},[1558,2680,2648],{"class":1634},[1558,2682,1824],{"class":1578},[1558,2684,1827],{"class":1574},[1558,2686,1579],{"class":1578},[1558,2688,2689,2691,2693,2695,2697,2699,2702,2704,2706],{"class":1560,"line":1631},[1558,2690,1646],{"class":1606},[1558,2692,1649],{"class":1578},[1558,2694,1653],{"class":1652},[1558,2696,1588],{"class":1634},[1558,2698,1658],{"class":1578},[1558,2700,2701],{"class":1661},"我会飞",[1558,2703,1658],{"class":1578},[1558,2705,1595],{"class":1634},[1558,2707,1615],{"class":1578},[1558,2709,2710],{"class":1560,"line":1643},[1558,2711,1621],{"class":1578},[1558,2713,2714],{"class":1560,"line":1679},[1558,2715,1687],{"class":1578},[1530,2717,2718],{},"如果类没有实现接口中的所有方法，TS 会报错。",[1907,2720,2721],{},[1530,2722,2723],{},"接口用来规范类的结构，类似合同，确保类符合预期功能。",[1534,2725],{},[1525,2727,2729],{"id":2728},"抽象类与接口","🏗 抽象类与接口",[2622,2731,2732],{"id":2732},"抽象类",[1530,2734,2735],{},"抽象类是 TS 独有的概念，ES6 不支持。",[1530,2737,2738],{},"抽象类不能直接实例化，通常用于作为基类，定义子类必须实现的方法。",[1549,2740,2742],{"className":1747,"code":2741,"language":1749,"meta":1554,"style":1554},"abstract class Animal {\n    name: string;\n    constructor(name: string) {\n        this.name = name;\n    }\n    abstract makeSound(): void; // 抽象方法，必须由子类实现\n\n    move(): void {\n        console.log(this.name + ' 在移动');\n    }\n}\n\nclass Cat extends Animal {\n    makeSound(): void {\n        console.log('喵喵');\n    }\n}\n\nconst cat = new Cat('小花');\ncat.makeSound();\n",[1544,2743,2744,2756,2766,2782,2794,2798,2815,2819,2829,2855,2859,2863,2867,2880,2891,2912,2916,2920,2924,2950],{"__ignoreMap":1554},[1558,2745,2746,2749,2752,2754],{"class":1560,"line":1561},[1558,2747,2748],{"class":1571},"abstract",[1558,2750,2751],{"class":1571}," class",[1558,2753,2222],{"class":1574},[1558,2755,1579],{"class":1578},[1558,2757,2758,2760,2762,2764],{"class":1560,"line":1568},[1558,2759,1769],{"class":1634},[1558,2761,1772],{"class":1578},[1558,2763,1775],{"class":1574},[1558,2765,1615],{"class":1578},[1558,2767,2768,2770,2772,2774,2776,2778,2780],{"class":1560,"line":1582},[1558,2769,1585],{"class":1571},[1558,2771,1588],{"class":1578},[1558,2773,1592],{"class":1591},[1558,2775,1772],{"class":1578},[1558,2777,1775],{"class":1574},[1558,2779,1595],{"class":1578},[1558,2781,1579],{"class":1578},[1558,2783,2784,2786,2788,2790,2792],{"class":1560,"line":1600},[1558,2785,1603],{"class":1578},[1558,2787,1592],{"class":1606},[1558,2789,1609],{"class":1578},[1558,2791,1612],{"class":1606},[1558,2793,1615],{"class":1578},[1558,2795,2796],{"class":1560,"line":1618},[1558,2797,1621],{"class":1578},[1558,2799,2800,2803,2806,2808,2810,2812],{"class":1560,"line":1624},[1558,2801,2802],{"class":1571},"    abstract",[1558,2804,2805],{"class":1634}," makeSound",[1558,2807,1824],{"class":1578},[1558,2809,1827],{"class":1574},[1558,2811,1976],{"class":1578},[1558,2813,2814],{"class":1564}," // 抽象方法，必须由子类实现\n",[1558,2816,2817],{"class":1560,"line":1631},[1558,2818,1628],{"emptyLinePlaceholder":1627},[1558,2820,2821,2823,2825,2827],{"class":1560,"line":1643},[1558,2822,2257],{"class":1634},[1558,2824,1824],{"class":1578},[1558,2826,1827],{"class":1574},[1558,2828,1579],{"class":1578},[1558,2830,2831,2833,2835,2837,2839,2841,2843,2845,2847,2849,2851,2853],{"class":1560,"line":1679},[1558,2832,1646],{"class":1606},[1558,2834,1649],{"class":1578},[1558,2836,1653],{"class":1652},[1558,2838,1588],{"class":1634},[1558,2840,2132],{"class":1578},[1558,2842,1592],{"class":1606},[1558,2844,1667],{"class":1578},[1558,2846,2280],{"class":1578},[1558,2848,2283],{"class":1661},[1558,2850,1658],{"class":1578},[1558,2852,1595],{"class":1634},[1558,2854,1615],{"class":1578},[1558,2856,2857],{"class":1560,"line":1684},[1558,2858,1621],{"class":1578},[1558,2860,2861],{"class":1560,"line":1690},[1558,2862,1687],{"class":1578},[1558,2864,2865],{"class":1560,"line":1695},[1558,2866,1628],{"emptyLinePlaceholder":1627},[1558,2868,2869,2871,2874,2876,2878],{"class":1560,"line":1725},[1558,2870,1546],{"class":1571},[1558,2872,2873],{"class":1574}," Cat",[1558,2875,2311],{"class":1571},[1558,2877,2222],{"class":1574},[1558,2879,1579],{"class":1578},[1558,2881,2882,2885,2887,2889],{"class":1560,"line":1870},[1558,2883,2884],{"class":1634},"    makeSound",[1558,2886,1824],{"class":1578},[1558,2888,1827],{"class":1574},[1558,2890,1579],{"class":1578},[1558,2892,2893,2895,2897,2899,2901,2903,2906,2908,2910],{"class":1560,"line":1895},[1558,2894,1646],{"class":1606},[1558,2896,1649],{"class":1578},[1558,2898,1653],{"class":1652},[1558,2900,1588],{"class":1634},[1558,2902,1658],{"class":1578},[1558,2904,2905],{"class":1661},"喵喵",[1558,2907,1658],{"class":1578},[1558,2909,1595],{"class":1634},[1558,2911,1615],{"class":1578},[1558,2913,2914],{"class":1560,"line":2152},[1558,2915,1621],{"class":1578},[1558,2917,2918],{"class":1560,"line":2166},[1558,2919,1687],{"class":1578},[1558,2921,2922],{"class":1560,"line":2179},[1558,2923,1628],{"emptyLinePlaceholder":1627},[1558,2925,2926,2928,2931,2933,2935,2937,2939,2941,2944,2946,2948],{"class":1560,"line":2184},[1558,2927,1698],{"class":1571},[1558,2929,2930],{"class":1606}," cat ",[1558,2932,1704],{"class":1578},[1558,2934,1707],{"class":1578},[1558,2936,2873],{"class":1652},[1558,2938,1588],{"class":1606},[1558,2940,1658],{"class":1578},[1558,2942,2943],{"class":1661},"小花",[1558,2945,1658],{"class":1578},[1558,2947,1595],{"class":1606},[1558,2949,1615],{"class":1578},[1558,2951,2953,2956,2958,2961,2963],{"class":1560,"line":2952},20,[1558,2954,2955],{"class":1606},"cat",[1558,2957,1649],{"class":1578},[1558,2959,2960],{"class":1652},"makeSound",[1558,2962,1638],{"class":1606},[1558,2964,1615],{"class":1578},[2622,2966,2967],{"id":2967},"接口",[1530,2969,2970],{},"接口定义了类的外部形状，不包含具体实现。一个类可以实现多个接口。",[1549,2972,2974],{"className":1747,"code":2973,"language":1749,"meta":1554,"style":1554},"interface Swimmer {\n    swim(): void;\n}\n\ninterface Flyer {\n    fly(): void;\n}\n\nclass Duck implements Swimmer, Flyer {\n    swim(): void {\n        console.log('鸭子游泳');\n    }\n    fly(): void {\n        console.log('鸭子飞翔');\n    }\n}\n",[1544,2975,2976,2985,2996,3000,3004,3013,3023,3027,3031,3048,3058,3079,3083,3093,3114,3118],{"__ignoreMap":1554},[1558,2977,2978,2980,2983],{"class":1560,"line":1561},[1558,2979,2638],{"class":1571},[1558,2981,2982],{"class":1574}," Swimmer",[1558,2984,1579],{"class":1578},[1558,2986,2987,2990,2992,2994],{"class":1560,"line":1568},[1558,2988,2989],{"class":1634},"    swim",[1558,2991,1824],{"class":1578},[1558,2993,1827],{"class":1574},[1558,2995,1615],{"class":1578},[1558,2997,2998],{"class":1560,"line":1582},[1558,2999,1687],{"class":1578},[1558,3001,3002],{"class":1560,"line":1600},[1558,3003,1628],{"emptyLinePlaceholder":1627},[1558,3005,3006,3008,3011],{"class":1560,"line":1618},[1558,3007,2638],{"class":1571},[1558,3009,3010],{"class":1574}," Flyer",[1558,3012,1579],{"class":1578},[1558,3014,3015,3017,3019,3021],{"class":1560,"line":1624},[1558,3016,2648],{"class":1634},[1558,3018,1824],{"class":1578},[1558,3020,1827],{"class":1574},[1558,3022,1615],{"class":1578},[1558,3024,3025],{"class":1560,"line":1631},[1558,3026,1687],{"class":1578},[1558,3028,3029],{"class":1560,"line":1643},[1558,3030,1628],{"emptyLinePlaceholder":1627},[1558,3032,3033,3035,3038,3040,3042,3044,3046],{"class":1560,"line":1679},[1558,3034,1546],{"class":1571},[1558,3036,3037],{"class":1574}," Duck",[1558,3039,2672],{"class":1571},[1558,3041,2982],{"class":1574},[1558,3043,2033],{"class":1578},[1558,3045,3010],{"class":1574},[1558,3047,1579],{"class":1578},[1558,3049,3050,3052,3054,3056],{"class":1560,"line":1684},[1558,3051,2989],{"class":1634},[1558,3053,1824],{"class":1578},[1558,3055,1827],{"class":1574},[1558,3057,1579],{"class":1578},[1558,3059,3060,3062,3064,3066,3068,3070,3073,3075,3077],{"class":1560,"line":1690},[1558,3061,1646],{"class":1606},[1558,3063,1649],{"class":1578},[1558,3065,1653],{"class":1652},[1558,3067,1588],{"class":1634},[1558,3069,1658],{"class":1578},[1558,3071,3072],{"class":1661},"鸭子游泳",[1558,3074,1658],{"class":1578},[1558,3076,1595],{"class":1634},[1558,3078,1615],{"class":1578},[1558,3080,3081],{"class":1560,"line":1695},[1558,3082,1621],{"class":1578},[1558,3084,3085,3087,3089,3091],{"class":1560,"line":1725},[1558,3086,2648],{"class":1634},[1558,3088,1824],{"class":1578},[1558,3090,1827],{"class":1574},[1558,3092,1579],{"class":1578},[1558,3094,3095,3097,3099,3101,3103,3105,3108,3110,3112],{"class":1560,"line":1870},[1558,3096,1646],{"class":1606},[1558,3098,1649],{"class":1578},[1558,3100,1653],{"class":1652},[1558,3102,1588],{"class":1634},[1558,3104,1658],{"class":1578},[1558,3106,3107],{"class":1661},"鸭子飞翔",[1558,3109,1658],{"class":1578},[1558,3111,1595],{"class":1634},[1558,3113,1615],{"class":1578},[1558,3115,3116],{"class":1560,"line":1895},[1558,3117,1621],{"class":1578},[1558,3119,3120],{"class":1560,"line":2152},[1558,3121,1687],{"class":1578},[1534,3123],{},[1525,3125,3127],{"id":3126},"小节总结","🧾 小节总结",[1926,3129,3130,3142,3159],{},[1929,3131,3132,3133,3135,3136,3135,3139,3141],{},"ES6 原生支持类定义、构造函数和继承（",[1544,3134,1546],{},"、",[1544,3137,3138],{},"constructor",[1544,3140,2204],{},"），但不支持访问修饰符、接口和抽象类。",[1929,3143,3144,3145,3135,3147,3135,3149,3151,3152,3154,3155,3158],{},"TS 在 ES6 类基础上添加了访问修饰符（",[1544,3146,1933],{},[1544,3148,1942],{},[1544,3150,1948],{},"），接口（",[1544,3153,2638],{},"），抽象类（",[1544,3156,3157],{},"abstract class","）等强类型和面向对象的特性。",[1929,3160,3161],{},"接口和抽象类是 TS 独有的，可以用来规范代码结构和抽象行为，增加代码的可维护性。",[1534,3163],{},[1525,3165,3167],{"id":3166},"知识问答qa","❓ 知识问答（Q&A）",[1530,3169,3170],{},"Q：ES6 中的类和 TS 类最大的区别是什么？",[1530,3172,3173],{},"A：ES6 仅支持类的基本语法和继承关系，TS 在此基础上增加了访问修饰符、类型声明、接口和抽象类等面向对象特性。",[1530,3175,3176],{},"Q：访问修饰符在编译后的 JS 代码中是否有效？",[1530,3178,3179],{},"A：访问修饰符只在 TS 编译阶段生效，编译成 JS 后不存在访问限制，但开发时提示错误，保证代码规范。",[1530,3181,3182],{},"Q：接口和抽象类有什么不同？",[1530,3184,3185],{},"A：接口只定义规范，没有具体实现，类可以实现多个接口；抽象类可以包含具体实现和抽象方法，不能实例化，只能被继承。",[1534,3187],{},[1525,3189,3191],{"id":3190},"小练习","🧪 小练习",[2622,3193,3195],{"id":3194},"练习-1","练习 1",[1530,3197,3198,3199,3202,3203,3206,3207,3210,3211,3214,3215,3217,3218,3220],{},"写一个 ",[1544,3200,3201],{},"Vehicle"," 抽象类，包含一个抽象方法 ",[1544,3204,3205],{},"move()","，和一个普通方法 ",[1544,3208,3209],{},"stop()","。然后写一个 ",[1544,3212,3213],{},"Car"," 类继承 ",[1544,3216,3201],{}," 并实现 ",[1544,3219,3205],{}," 方法。",[1549,3222,3224],{"className":1747,"code":3223,"language":1749,"meta":1554,"style":1554},"abstract class Vehicle {\n    abstract move(): void;\n    stop(): void {\n        console.log('停止');\n    }\n}\n\n// 在这里写 Car 类，继承 Vehicle 并实现 move()\n",[1544,3225,3226,3237,3250,3261,3282,3286,3290,3294],{"__ignoreMap":1554},[1558,3227,3228,3230,3232,3235],{"class":1560,"line":1561},[1558,3229,2748],{"class":1571},[1558,3231,2751],{"class":1571},[1558,3233,3234],{"class":1574}," Vehicle",[1558,3236,1579],{"class":1578},[1558,3238,3239,3241,3244,3246,3248],{"class":1560,"line":1568},[1558,3240,2802],{"class":1571},[1558,3242,3243],{"class":1634}," move",[1558,3245,1824],{"class":1578},[1558,3247,1827],{"class":1574},[1558,3249,1615],{"class":1578},[1558,3251,3252,3255,3257,3259],{"class":1560,"line":1582},[1558,3253,3254],{"class":1634},"    stop",[1558,3256,1824],{"class":1578},[1558,3258,1827],{"class":1574},[1558,3260,1579],{"class":1578},[1558,3262,3263,3265,3267,3269,3271,3273,3276,3278,3280],{"class":1560,"line":1600},[1558,3264,1646],{"class":1606},[1558,3266,1649],{"class":1578},[1558,3268,1653],{"class":1652},[1558,3270,1588],{"class":1634},[1558,3272,1658],{"class":1578},[1558,3274,3275],{"class":1661},"停止",[1558,3277,1658],{"class":1578},[1558,3279,1595],{"class":1634},[1558,3281,1615],{"class":1578},[1558,3283,3284],{"class":1560,"line":1618},[1558,3285,1621],{"class":1578},[1558,3287,3288],{"class":1560,"line":1624},[1558,3289,1687],{"class":1578},[1558,3291,3292],{"class":1560,"line":1631},[1558,3293,1628],{"emptyLinePlaceholder":1627},[1558,3295,3296],{"class":1560,"line":1643},[1558,3297,3298],{"class":1564},"// 在这里写 Car 类，继承 Vehicle 并实现 move()\n",[2622,3300,3302],{"id":3301},"练习-2","练习 2",[1530,3304,3305,3306,3309,3310,3313,3314,3317,3318,3320],{},"定义一个接口 ",[1544,3307,3308],{},"Playable","，包含方法 ",[1544,3311,3312],{},"play()",", 写一个类 ",[1544,3315,3316],{},"Music"," 实现这个接口，并在 ",[1544,3319,3312],{}," 方法中输出播放音乐的提示。",[1549,3322,3324],{"className":1747,"code":3323,"language":1749,"meta":1554,"style":1554},"interface Playable {\n    play(): void;\n}\n\n// 写 Music 类，实现 Playable 接口\n",[1544,3325,3326,3335,3346,3350,3354],{"__ignoreMap":1554},[1558,3327,3328,3330,3333],{"class":1560,"line":1561},[1558,3329,2638],{"class":1571},[1558,3331,3332],{"class":1574}," Playable",[1558,3334,1579],{"class":1578},[1558,3336,3337,3340,3342,3344],{"class":1560,"line":1568},[1558,3338,3339],{"class":1634},"    play",[1558,3341,1824],{"class":1578},[1558,3343,1827],{"class":1574},[1558,3345,1615],{"class":1578},[1558,3347,3348],{"class":1560,"line":1582},[1558,3349,1687],{"class":1578},[1558,3351,3352],{"class":1560,"line":1600},[1558,3353,1628],{"emptyLinePlaceholder":1627},[1558,3355,3356],{"class":1560,"line":1618},[1558,3357,3358],{"class":1564},"// 写 Music 类，实现 Playable 接口\n",[1534,3360],{},[1530,3362,3363],{},"🎉 恭喜你已经掌握 TS 类定义、访问修饰符、继承与实现、抽象类与接口技能啦！ 面向对象的思想能帮助你写出更结构化、可维护的代码，TS 的类型系统让这个过程更可靠。继续练习，你会更得心应手！",[3365,3366,3367],"style",{},"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 .sYGMc, html code.shiki .sYGMc{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .s86vT, html code.shiki .s86vT{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}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 .sndM8, html code.shiki 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.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}",{"title":1554,"searchDepth":1568,"depth":1568,"links":3369},[3370,3371,3372,3373,3376,3380,3381,3382],{"id":1527,"depth":1568,"text":1528},{"id":1538,"depth":1568,"text":1539},{"id":1916,"depth":1568,"text":1917},{"id":2197,"depth":1568,"text":2198,"children":3374},[3375],{"id":2624,"depth":1582,"text":2625},{"id":2728,"depth":1568,"text":2729,"children":3377},[3378,3379],{"id":2732,"depth":1582,"text":2732},{"id":2967,"depth":1582,"text":2967},{"id":3126,"depth":1568,"text":3127},{"id":3166,"depth":1568,"text":3167},{"id":3190,"depth":1568,"text":3191,"children":3383},[3384,3385],{"id":3194,"depth":1582,"text":3195},{"id":3301,"depth":1582,"text":3302},"详解 TS 中类与面向对象编程的核心概念，区别 ES6 和 TS 特性的分界线","md",null,{},{"title":538},{"title":538,"description":3386},"XXBQIiloON",[3394,3396],{"title":534,"path":535,"stem":536,"description":3395,"children":-1},"本文详细介绍 TypeScript 中联合类型与交叉类型的区别与应用，类型断言的正确使用，以及常见类型守卫技巧，帮助前端小白全面掌握类型相关知识。",{"title":542,"path":543,"stem":544,"description":3397,"children":-1},"通过泛型实现类型复用，掌握泛型函数、接口、约束及实用工具类型的使用技巧",1784715112791]