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data、computed、methods，但 DOM 还未挂载。",[1580,1811,1813],{"className":1582,"code":1812,"language":1584,"meta":1585,"style":1585},"\u003Cscript>\nexport default {\n    data() {\n        return {\n            message: 'Hello Vue2!',\n        };\n    },\n    created() {\n        console.log('created：', this.message); // 正常输出 \"Hello Vue2!\"\n        // 可以在这里发起数据请求或初始化业务逻辑\n    },\n};\n\u003C/script>\n",[1587,1814,1815,1823,1831,1839,1845,1859,1863,1867,1876,1906,1911,1915,1919],{"__ignoreMap":1585},[1590,1816,1817,1819,1821],{"class":1592,"line":1593},[1590,1818,1597],{"class":1596},[1590,1820,1651],{"class":1600},[1590,1822,1604],{"class":1596},[1590,1824,1825,1827,1829],{"class":1592,"line":1607},[1590,1826,1660],{"class":1659},[1590,1828,1663],{"class":1659},[1590,1830,1666],{"class":1596},[1590,1832,1833,1835,1837],{"class":1592,"line":1630},[1590,1834,1672],{"class":1600},[1590,1836,1675],{"class":1596},[1590,1838,1666],{"class":1596},[1590,1840,1841,1843],{"class":1592,"line":1639},[1590,1842,1683],{"class":1659},[1590,1844,1666],{"class":1596},[1590,1846,1847,1849,1851,1853,1855,1857],{"class":1592,"line":1646},[1590,1848,1691],{"class":1600},[1590,1850,1694],{"class":1596},[1590,1852,1697],{"class":1596},[1590,1854,1701],{"class":1700},[1590,1856,1704],{"class":1596},[1590,1858,1707],{"class":1596},[1590,1860,1861],{"class":1592,"line":1656},[1590,1862,1713],{"class":1596},[1590,1864,1865],{"class":1592,"line":1669},[1590,1866,1719],{"class":1596},[1590,1868,1869,1872,1874],{"class":1592,"line":1680},[1590,1870,1871],{"class":1600},"    created",[1590,1873,1675],{"class":1596},[1590,1875,1666],{"class":1596},[1590,1877,1878,1880,1882,1884,1886,1888,1891,1893,1895,1897,1899,1901,1903],{"class":1592,"line":1688},[1590,1879,1742],{"class":1619},[1590,1881,1745],{"class":1596},[1590,1883,1749],{"class":1748},[1590,1885,1752],{"class":1600},[1590,1887,1704],{"class":1596},[1590,1889,1890],{"class":1700},"created：",[1590,1892,1704],{"class":1596},[1590,1894,1762],{"class":1596},[1590,1896,1765],{"class":1596},[1590,1898,1768],{"class":1619},[1590,1900,1771],{"class":1600},[1590,1902,1774],{"class":1596},[1590,1904,1905],{"class":1735}," // 正常输出 \"Hello Vue2!\"\n",[1590,1907,1908],{"class":1592,"line":1710},[1590,1909,1910],{"class":1735},"        // 可以在这里发起数据请求或初始化业务逻辑\n",[1590,1912,1913],{"class":1592,"line":1716},[1590,1914,1719],{"class":1596},[1590,1916,1917],{"class":1592,"line":1722},[1590,1918,1788],{"class":1596},[1590,1920,1921,1923,1925],{"class":1592,"line":1732},[1590,1922,1623],{"class":1596},[1590,1924,1651],{"class":1600},[1590,1926,1604],{"class":1596},[1799,1928,1929],{},[1530,1930,1931],{},"created 钩子非常适合进行 API 请求、数据初始化等操作，因为数据已经准备好，但 DOM 还没生成。",[1534,1933],{},[1525,1935,1937],{"id":1936},"挂载阶段钩子","🚀 挂载阶段钩子",[1572,1939,1941],{"id":1940},"beforemount","beforeMount",[1530,1943,1944],{},"模板编译完成，虚拟 DOM 已生成，但还未挂载到真实 DOM。",[1580,1946,1948],{"className":1582,"code":1947,"language":1584,"meta":1585,"style":1585},"\u003Cscript>\nexport default {\n    beforeMount() {\n        console.log('beforeMount：即将挂载到页面');\n    },\n};\n\u003C/script>\n",[1587,1949,1950,1958,1966,1975,1997,2001,2005],{"__ignoreMap":1585},[1590,1951,1952,1954,1956],{"class":1592,"line":1593},[1590,1953,1597],{"class":1596},[1590,1955,1651],{"class":1600},[1590,1957,1604],{"class":1596},[1590,1959,1960,1962,1964],{"class":1592,"line":1607},[1590,1961,1660],{"class":1659},[1590,1963,1663],{"class":1659},[1590,1965,1666],{"class":1596},[1590,1967,1968,1971,1973],{"class":1592,"line":1630},[1590,1969,1970],{"class":1600},"    beforeMount",[1590,1972,1675],{"class":1596},[1590,1974,1666],{"class":1596},[1590,1976,1977,1979,1981,1983,1985,1987,1990,1992,1994],{"class":1592,"line":1639},[1590,1978,1742],{"class":1619},[1590,1980,1745],{"class":1596},[1590,1982,1749],{"class":1748},[1590,1984,1752],{"class":1600},[1590,1986,1704],{"class":1596},[1590,1988,1989],{"class":1700},"beforeMount：即将挂载到页面",[1590,1991,1704],{"class":1596},[1590,1993,1771],{"class":1600},[1590,1995,1996],{"class":1596},";\n",[1590,1998,1999],{"class":1592,"line":1646},[1590,2000,1719],{"class":1596},[1590,2002,2003],{"class":1592,"line":1656},[1590,2004,1788],{"class":1596},[1590,2006,2007,2009,2011],{"class":1592,"line":1669},[1590,2008,1623],{"class":1596},[1590,2010,1651],{"class":1600},[1590,2012,1604],{"class":1596},[1572,2014,2015],{"id":2015},"mounted",[1530,2017,2018],{},"组件挂载到页面后调用，此时可以操作真实 DOM。",[1580,2020,2022],{"className":1582,"code":2021,"language":1584,"meta":1585,"style":1585},"\u003Ctemplate>\n    \u003Cdiv ref=\"myDiv\">这是一个 div\u003C/div>\n\u003C/template>\n\n\u003Cscript>\nexport default {\n    mounted() {\n        console.log('mounted：组件挂载完成');\n        // 这里可以访问真实 DOM\n        this.$refs.myDiv.style.color = 'blue';\n    },\n};\n\u003C/script>\n",[1587,2023,2024,2032,2064,2072,2076,2084,2092,2101,2122,2127,2161,2165,2169],{"__ignoreMap":1585},[1590,2025,2026,2028,2030],{"class":1592,"line":1593},[1590,2027,1597],{"class":1596},[1590,2029,1601],{"class":1600},[1590,2031,1604],{"class":1596},[1590,2033,2034,2036,2038,2042,2045,2048,2051,2053,2055,2058,2060,2062],{"class":1592,"line":1607},[1590,2035,1610],{"class":1596},[1590,2037,1613],{"class":1600},[1590,2039,2041],{"class":2040},"s50WR"," ref",[1590,2043,2044],{"class":1596},"=",[1590,2046,2047],{"class":1596},"\"",[1590,2049,2050],{"class":1700},"myDiv",[1590,2052,2047],{"class":1596},[1590,2054,1616],{"class":1596},[1590,2056,2057],{"class":1619},"这是一个 div",[1590,2059,1623],{"class":1596},[1590,2061,1613],{"class":1600},[1590,2063,1604],{"class":1596},[1590,2065,2066,2068,2070],{"class":1592,"line":1630},[1590,2067,1623],{"class":1596},[1590,2069,1601],{"class":1600},[1590,2071,1604],{"class":1596},[1590,2073,2074],{"class":1592,"line":1639},[1590,2075,1643],{"emptyLinePlaceholder":1642},[1590,2077,2078,2080,2082],{"class":1592,"line":1646},[1590,2079,1597],{"class":1596},[1590,2081,1651],{"class":1600},[1590,2083,1604],{"class":1596},[1590,2085,2086,2088,2090],{"class":1592,"line":1656},[1590,2087,1660],{"class":1659},[1590,2089,1663],{"class":1659},[1590,2091,1666],{"class":1596},[1590,2093,2094,2097,2099],{"class":1592,"line":1669},[1590,2095,2096],{"class":1600},"    mounted",[1590,2098,1675],{"class":1596},[1590,2100,1666],{"class":1596},[1590,2102,2103,2105,2107,2109,2111,2113,2116,2118,2120],{"class":1592,"line":1680},[1590,2104,1742],{"class":1619},[1590,2106,1745],{"class":1596},[1590,2108,1749],{"class":1748},[1590,2110,1752],{"class":1600},[1590,2112,1704],{"class":1596},[1590,2114,2115],{"class":1700},"mounted：组件挂载完成",[1590,2117,1704],{"class":1596},[1590,2119,1771],{"class":1600},[1590,2121,1996],{"class":1596},[1590,2123,2124],{"class":1592,"line":1688},[1590,2125,2126],{"class":1735},"        // 这里可以访问真实 DOM\n",[1590,2128,2129,2132,2135,2137,2139,2141,2144,2146,2149,2152,2154,2157,2159],{"class":1592,"line":1710},[1590,2130,2131],{"class":1596},"        this.",[1590,2133,2134],{"class":1619},"$refs",[1590,2136,1745],{"class":1596},[1590,2138,2050],{"class":1619},[1590,2140,1745],{"class":1596},[1590,2142,2143],{"class":1619},"style",[1590,2145,1745],{"class":1596},[1590,2147,2148],{"class":1619},"color",[1590,2150,2151],{"class":1596}," =",[1590,2153,1697],{"class":1596},[1590,2155,2156],{"class":1700},"blue",[1590,2158,1704],{"class":1596},[1590,2160,1996],{"class":1596},[1590,2162,2163],{"class":1592,"line":1716},[1590,2164,1719],{"class":1596},[1590,2166,2167],{"class":1592,"line":1722},[1590,2168,1788],{"class":1596},[1590,2170,2171,2173,2175],{"class":1592,"line":1732},[1590,2172,1623],{"class":1596},[1590,2174,1651],{"class":1600},[1590,2176,1604],{"class":1596},[1799,2178,2179],{},[1530,2180,2181],{},"mounted 钩子适合操作 DOM，做一些页面初始化动画、第三方库初始化等工作。",[1534,2183],{},[1525,2185,2187],{"id":2186},"更新阶段钩子","🔄 更新阶段钩子",[1530,2189,2190],{},"当组件的数据变化，触发重新渲染，生命周期进入更新阶段。",[1572,2192,2194],{"id":2193},"beforeupdate","beforeUpdate",[1530,2196,2197],{},"数据更新，虚拟 DOM 重新渲染前调用。",[1580,2199,2201],{"className":1582,"code":2200,"language":1584,"meta":1585,"style":1585},"\u003Cscript>\nexport default {\n    data() {\n        return {\n            count: 0,\n        };\n    },\n    beforeUpdate() {\n        console.log('beforeUpdate：数据即将更新，当前 count 是', this.count);\n    },\n};\n\u003C/script>\n",[1587,2202,2203,2211,2219,2227,2233,2246,2250,2254,2263,2291,2295,2299],{"__ignoreMap":1585},[1590,2204,2205,2207,2209],{"class":1592,"line":1593},[1590,2206,1597],{"class":1596},[1590,2208,1651],{"class":1600},[1590,2210,1604],{"class":1596},[1590,2212,2213,2215,2217],{"class":1592,"line":1607},[1590,2214,1660],{"class":1659},[1590,2216,1663],{"class":1659},[1590,2218,1666],{"class":1596},[1590,2220,2221,2223,2225],{"class":1592,"line":1630},[1590,2222,1672],{"class":1600},[1590,2224,1675],{"class":1596},[1590,2226,1666],{"class":1596},[1590,2228,2229,2231],{"class":1592,"line":1639},[1590,2230,1683],{"class":1659},[1590,2232,1666],{"class":1596},[1590,2234,2235,2238,2240,2244],{"class":1592,"line":1646},[1590,2236,2237],{"class":1600},"            count",[1590,2239,1694],{"class":1596},[1590,2241,2243],{"class":2242},"smPcV"," 0",[1590,2245,1707],{"class":1596},[1590,2247,2248],{"class":1592,"line":1656},[1590,2249,1713],{"class":1596},[1590,2251,2252],{"class":1592,"line":1669},[1590,2253,1719],{"class":1596},[1590,2255,2256,2259,2261],{"class":1592,"line":1680},[1590,2257,2258],{"class":1600},"    beforeUpdate",[1590,2260,1675],{"class":1596},[1590,2262,1666],{"class":1596},[1590,2264,2265,2267,2269,2271,2273,2275,2278,2280,2282,2284,2287,2289],{"class":1592,"line":1688},[1590,2266,1742],{"class":1619},[1590,2268,1745],{"class":1596},[1590,2270,1749],{"class":1748},[1590,2272,1752],{"class":1600},[1590,2274,1704],{"class":1596},[1590,2276,2277],{"class":1700},"beforeUpdate：数据即将更新，当前 count 是",[1590,2279,1704],{"class":1596},[1590,2281,1762],{"class":1596},[1590,2283,1765],{"class":1596},[1590,2285,2286],{"class":1619},"count",[1590,2288,1771],{"class":1600},[1590,2290,1996],{"class":1596},[1590,2292,2293],{"class":1592,"line":1710},[1590,2294,1719],{"class":1596},[1590,2296,2297],{"class":1592,"line":1716},[1590,2298,1788],{"class":1596},[1590,2300,2301,2303,2305],{"class":1592,"line":1722},[1590,2302,1623],{"class":1596},[1590,2304,1651],{"class":1600},[1590,2306,1604],{"class":1596},[1572,2308,2309],{"id":2309},"updated",[1530,2311,2312],{},"组件 DOM 更新完成后调用。",[1580,2314,2316],{"className":1582,"code":2315,"language":1584,"meta":1585,"style":1585},"\u003Cscript>\nexport default {\n    updated() {\n        console.log('updated：DOM 更新完毕');\n    },\n};\n\u003C/script>\n",[1587,2317,2318,2326,2334,2343,2364,2368,2372],{"__ignoreMap":1585},[1590,2319,2320,2322,2324],{"class":1592,"line":1593},[1590,2321,1597],{"class":1596},[1590,2323,1651],{"class":1600},[1590,2325,1604],{"class":1596},[1590,2327,2328,2330,2332],{"class":1592,"line":1607},[1590,2329,1660],{"class":1659},[1590,2331,1663],{"class":1659},[1590,2333,1666],{"class":1596},[1590,2335,2336,2339,2341],{"class":1592,"line":1630},[1590,2337,2338],{"class":1600},"    updated",[1590,2340,1675],{"class":1596},[1590,2342,1666],{"class":1596},[1590,2344,2345,2347,2349,2351,2353,2355,2358,2360,2362],{"class":1592,"line":1639},[1590,2346,1742],{"class":1619},[1590,2348,1745],{"class":1596},[1590,2350,1749],{"class":1748},[1590,2352,1752],{"class":1600},[1590,2354,1704],{"class":1596},[1590,2356,2357],{"class":1700},"updated：DOM 更新完毕",[1590,2359,1704],{"class":1596},[1590,2361,1771],{"class":1600},[1590,2363,1996],{"class":1596},[1590,2365,2366],{"class":1592,"line":1646},[1590,2367,1719],{"class":1596},[1590,2369,2370],{"class":1592,"line":1656},[1590,2371,1788],{"class":1596},[1590,2373,2374,2376,2378],{"class":1592,"line":1669},[1590,2375,1623],{"class":1596},[1590,2377,1651],{"class":1600},[1590,2379,1604],{"class":1596},[2381,2382,2383],"warning",{},[1530,2384,2385],{},"更新钩子会频繁触发，避免在里面做大型 DOM 操作或异步请求，可能导致性能问题。",[1534,2387],{},[1525,2389,2391],{"id":2390},"销毁阶段钩子","🧹 销毁阶段钩子",[1530,2393,2394],{},"当组件不再需要，Vue 会销毁组件实例，释放资源。",[1572,2396,2398],{"id":2397},"beforedestroy","beforeDestroy",[1530,2400,2401],{},"组件销毁前调用，可以做一些清理工作。",[1580,2403,2405],{"className":1582,"code":2404,"language":1584,"meta":1585,"style":1585},"\u003Cscript>\nexport default {\n    beforeDestroy() {\n        console.log('beforeDestroy：组件即将被销毁');\n        // 清除定时器、取消事件监听等\n    },\n};\n\u003C/script>\n",[1587,2406,2407,2415,2423,2432,2453,2458,2462,2466],{"__ignoreMap":1585},[1590,2408,2409,2411,2413],{"class":1592,"line":1593},[1590,2410,1597],{"class":1596},[1590,2412,1651],{"class":1600},[1590,2414,1604],{"class":1596},[1590,2416,2417,2419,2421],{"class":1592,"line":1607},[1590,2418,1660],{"class":1659},[1590,2420,1663],{"class":1659},[1590,2422,1666],{"class":1596},[1590,2424,2425,2428,2430],{"class":1592,"line":1630},[1590,2426,2427],{"class":1600},"    beforeDestroy",[1590,2429,1675],{"class":1596},[1590,2431,1666],{"class":1596},[1590,2433,2434,2436,2438,2440,2442,2444,2447,2449,2451],{"class":1592,"line":1639},[1590,2435,1742],{"class":1619},[1590,2437,1745],{"class":1596},[1590,2439,1749],{"class":1748},[1590,2441,1752],{"class":1600},[1590,2443,1704],{"class":1596},[1590,2445,2446],{"class":1700},"beforeDestroy：组件即将被销毁",[1590,2448,1704],{"class":1596},[1590,2450,1771],{"class":1600},[1590,2452,1996],{"class":1596},[1590,2454,2455],{"class":1592,"line":1646},[1590,2456,2457],{"class":1735},"        // 清除定时器、取消事件监听等\n",[1590,2459,2460],{"class":1592,"line":1656},[1590,2461,1719],{"class":1596},[1590,2463,2464],{"class":1592,"line":1669},[1590,2465,1788],{"class":1596},[1590,2467,2468,2470,2472],{"class":1592,"line":1680},[1590,2469,1623],{"class":1596},[1590,2471,1651],{"class":1600},[1590,2473,1604],{"class":1596},[1572,2475,2476],{"id":2476},"destroyed",[1530,2478,2479],{},"组件销毁后调用，所有的事件监听和子实例都被移除。",[1580,2481,2483],{"className":1582,"code":2482,"language":1584,"meta":1585,"style":1585},"\u003Cscript>\nexport default {\n    destroyed() {\n        console.log('destroyed：组件已销毁');\n    },\n};\n\u003C/script>\n",[1587,2484,2485,2493,2501,2510,2531,2535,2539],{"__ignoreMap":1585},[1590,2486,2487,2489,2491],{"class":1592,"line":1593},[1590,2488,1597],{"class":1596},[1590,2490,1651],{"class":1600},[1590,2492,1604],{"class":1596},[1590,2494,2495,2497,2499],{"class":1592,"line":1607},[1590,2496,1660],{"class":1659},[1590,2498,1663],{"class":1659},[1590,2500,1666],{"class":1596},[1590,2502,2503,2506,2508],{"class":1592,"line":1630},[1590,2504,2505],{"class":1600},"    destroyed",[1590,2507,1675],{"class":1596},[1590,2509,1666],{"class":1596},[1590,2511,2512,2514,2516,2518,2520,2522,2525,2527,2529],{"class":1592,"line":1639},[1590,2513,1742],{"class":1619},[1590,2515,1745],{"class":1596},[1590,2517,1749],{"class":1748},[1590,2519,1752],{"class":1600},[1590,2521,1704],{"class":1596},[1590,2523,2524],{"class":1700},"destroyed：组件已销毁",[1590,2526,1704],{"class":1596},[1590,2528,1771],{"class":1600},[1590,2530,1996],{"class":1596},[1590,2532,2533],{"class":1592,"line":1646},[1590,2534,1719],{"class":1596},[1590,2536,2537],{"class":1592,"line":1656},[1590,2538,1788],{"class":1596},[1590,2540,2541,2543,2545],{"class":1592,"line":1669},[1590,2542,1623],{"class":1596},[1590,2544,1651],{"class":1600},[1590,2546,1604],{"class":1596},[1799,2548,2549],{},[1530,2550,2551],{},"合理使用销毁钩子能避免内存泄漏，保证应用性能。",[1534,2553],{},[1525,2555,2557],{"id":2556},"生命周期钩子实战示例","🔍 生命周期钩子实战示例",[1530,2559,2560],{},"我们做一个简单的倒计时组件，演示生命周期钩子配合使用。",[1580,2562,2565],{"className":1582,"code":2563,"filename":2564,"language":1584,"meta":1585,"style":1585},"\u003Ctemplate>\n    \u003Cdiv>\n        \u003Cp>倒计时：{{ seconds }} 秒\u003C/p>\n        \u003Cbutton @click=\"start\">开始倒计时\u003C/button>\n    \u003C/div>\n\u003C/template>\n\n\u003Cscript>\nexport default {\n    data() {\n        return {\n            seconds: 10,\n            timer: null,\n        };\n    },\n    beforeCreate() {\n        console.log('beforeCreate：倒计时组件初始化');\n    },\n    created() {\n        console.log('created：倒计时数据准备完成');\n    },\n    mounted() {\n        console.log('mounted：组件已挂载');\n    },\n    beforeUpdate() {\n        console.log('beforeUpdate：秒数即将更新，当前秒数', this.seconds);\n    },\n    updated() {\n        console.log('updated：秒数更新完毕', this.seconds);\n    },\n    beforeDestroy() {\n        console.log('beforeDestroy：倒计时组件即将销毁，清除定时器');\n        clearInterval(this.timer);\n    },\n    destroyed() {\n        console.log('destroyed：倒计时组件销毁完成');\n    },\n    methods: {\n        start() {\n            this.timer = setInterval(() => {\n                if (this.seconds > 0) {\n                    this.seconds--;\n                } else {\n                    clearInterval(this.timer);\n                }\n            }, 1000);\n        },\n    },\n};\n\u003C/script>\n","example.vue",[1587,2566,2567,2575,2583,2601,2631,2640,2648,2652,2660,2668,2676,2682,2694,2704,2708,2712,2720,2741,2746,2755,2777,2782,2791,2813,2818,2827,2856,2861,2870,2898,2903,2912,2934,2952,2957,2966,2988,2993,3003,3013,3035,3059,3070,3081,3097,3103,3116,3122,3127,3132],{"__ignoreMap":1585},[1590,2568,2569,2571,2573],{"class":1592,"line":1593},[1590,2570,1597],{"class":1596},[1590,2572,1601],{"class":1600},[1590,2574,1604],{"class":1596},[1590,2576,2577,2579,2581],{"class":1592,"line":1607},[1590,2578,1610],{"class":1596},[1590,2580,1613],{"class":1600},[1590,2582,1604],{"class":1596},[1590,2584,2585,2588,2590,2592,2595,2597,2599],{"class":1592,"line":1630},[1590,2586,2587],{"class":1596},"        \u003C",[1590,2589,1530],{"class":1600},[1590,2591,1616],{"class":1596},[1590,2593,2594],{"class":1619},"倒计时：{{ seconds }} 秒",[1590,2596,1623],{"class":1596},[1590,2598,1530],{"class":1600},[1590,2600,1604],{"class":1596},[1590,2602,2603,2605,2608,2611,2613,2615,2618,2620,2622,2625,2627,2629],{"class":1592,"line":1639},[1590,2604,2587],{"class":1596},[1590,2606,2607],{"class":1600},"button",[1590,2609,2610],{"class":2040}," @click",[1590,2612,2044],{"class":1596},[1590,2614,2047],{"class":1596},[1590,2616,2617],{"class":1700},"start",[1590,2619,2047],{"class":1596},[1590,2621,1616],{"class":1596},[1590,2623,2624],{"class":1619},"开始倒计时",[1590,2626,1623],{"class":1596},[1590,2628,2607],{"class":1600},[1590,2630,1604],{"class":1596},[1590,2632,2633,2636,2638],{"class":1592,"line":1646},[1590,2634,2635],{"class":1596},"    \u003C/",[1590,2637,1613],{"class":1600},[1590,2639,1604],{"class":1596},[1590,2641,2642,2644,2646],{"class":1592,"line":1656},[1590,2643,1623],{"class":1596},[1590,2645,1601],{"class":1600},[1590,2647,1604],{"class":1596},[1590,2649,2650],{"class":1592,"line":1669},[1590,2651,1643],{"emptyLinePlaceholder":1642},[1590,2653,2654,2656,2658],{"class":1592,"line":1680},[1590,2655,1597],{"class":1596},[1590,2657,1651],{"class":1600},[1590,2659,1604],{"class":1596},[1590,2661,2662,2664,2666],{"class":1592,"line":1688},[1590,2663,1660],{"class":1659},[1590,2665,1663],{"class":1659},[1590,2667,1666],{"class":1596},[1590,2669,2670,2672,2674],{"class":1592,"line":1710},[1590,2671,1672],{"class":1600},[1590,2673,1675],{"class":1596},[1590,2675,1666],{"class":1596},[1590,2677,2678,2680],{"class":1592,"line":1716},[1590,2679,1683],{"class":1659},[1590,2681,1666],{"class":1596},[1590,2683,2684,2687,2689,2692],{"class":1592,"line":1722},[1590,2685,2686],{"class":1600},"            seconds",[1590,2688,1694],{"class":1596},[1590,2690,2691],{"class":2242}," 10",[1590,2693,1707],{"class":1596},[1590,2695,2696,2699,2701],{"class":1592,"line":1732},[1590,2697,2698],{"class":1600},"            timer",[1590,2700,1694],{"class":1596},[1590,2702,2703],{"class":1596}," null,\n",[1590,2705,2706],{"class":1592,"line":1739},[1590,2707,1713],{"class":1596},[1590,2709,2710],{"class":1592,"line":1780},[1590,2711,1719],{"class":1596},[1590,2713,2714,2716,2718],{"class":1592,"line":1785},[1590,2715,1725],{"class":1600},[1590,2717,1675],{"class":1596},[1590,2719,1666],{"class":1596},[1590,2721,2722,2724,2726,2728,2730,2732,2735,2737,2739],{"class":1592,"line":1791},[1590,2723,1742],{"class":1619},[1590,2725,1745],{"class":1596},[1590,2727,1749],{"class":1748},[1590,2729,1752],{"class":1600},[1590,2731,1704],{"class":1596},[1590,2733,2734],{"class":1700},"beforeCreate：倒计时组件初始化",[1590,2736,1704],{"class":1596},[1590,2738,1771],{"class":1600},[1590,2740,1996],{"class":1596},[1590,2742,2744],{"class":1592,"line":2743},18,[1590,2745,1719],{"class":1596},[1590,2747,2749,2751,2753],{"class":1592,"line":2748},19,[1590,2750,1871],{"class":1600},[1590,2752,1675],{"class":1596},[1590,2754,1666],{"class":1596},[1590,2756,2758,2760,2762,2764,2766,2768,2771,2773,2775],{"class":1592,"line":2757},20,[1590,2759,1742],{"class":1619},[1590,2761,1745],{"class":1596},[1590,2763,1749],{"class":1748},[1590,2765,1752],{"class":1600},[1590,2767,1704],{"class":1596},[1590,2769,2770],{"class":1700},"created：倒计时数据准备完成",[1590,2772,1704],{"class":1596},[1590,2774,1771],{"class":1600},[1590,2776,1996],{"class":1596},[1590,2778,2780],{"class":1592,"line":2779},21,[1590,2781,1719],{"class":1596},[1590,2783,2785,2787,2789],{"class":1592,"line":2784},22,[1590,2786,2096],{"class":1600},[1590,2788,1675],{"class":1596},[1590,2790,1666],{"class":1596},[1590,2792,2794,2796,2798,2800,2802,2804,2807,2809,2811],{"class":1592,"line":2793},23,[1590,2795,1742],{"class":1619},[1590,2797,1745],{"class":1596},[1590,2799,1749],{"class":1748},[1590,2801,1752],{"class":1600},[1590,2803,1704],{"class":1596},[1590,2805,2806],{"class":1700},"mounted：组件已挂载",[1590,2808,1704],{"class":1596},[1590,2810,1771],{"class":1600},[1590,2812,1996],{"class":1596},[1590,2814,2816],{"class":1592,"line":2815},24,[1590,2817,1719],{"class":1596},[1590,2819,2821,2823,2825],{"class":1592,"line":2820},25,[1590,2822,2258],{"class":1600},[1590,2824,1675],{"class":1596},[1590,2826,1666],{"class":1596},[1590,2828,2830,2832,2834,2836,2838,2840,2843,2845,2847,2849,2852,2854],{"class":1592,"line":2829},26,[1590,2831,1742],{"class":1619},[1590,2833,1745],{"class":1596},[1590,2835,1749],{"class":1748},[1590,2837,1752],{"class":1600},[1590,2839,1704],{"class":1596},[1590,2841,2842],{"class":1700},"beforeUpdate：秒数即将更新，当前秒数",[1590,2844,1704],{"class":1596},[1590,2846,1762],{"class":1596},[1590,2848,1765],{"class":1596},[1590,2850,2851],{"class":1619},"seconds",[1590,2853,1771],{"class":1600},[1590,2855,1996],{"class":1596},[1590,2857,2859],{"class":1592,"line":2858},27,[1590,2860,1719],{"class":1596},[1590,2862,2864,2866,2868],{"class":1592,"line":2863},28,[1590,2865,2338],{"class":1600},[1590,2867,1675],{"class":1596},[1590,2869,1666],{"class":1596},[1590,2871,2873,2875,2877,2879,2881,2883,2886,2888,2890,2892,2894,2896],{"class":1592,"line":2872},29,[1590,2874,1742],{"class":1619},[1590,2876,1745],{"class":1596},[1590,2878,1749],{"class":1748},[1590,2880,1752],{"class":1600},[1590,2882,1704],{"class":1596},[1590,2884,2885],{"class":1700},"updated：秒数更新完毕",[1590,2887,1704],{"class":1596},[1590,2889,1762],{"class":1596},[1590,2891,1765],{"class":1596},[1590,2893,2851],{"class":1619},[1590,2895,1771],{"class":1600},[1590,2897,1996],{"class":1596},[1590,2899,2901],{"class":1592,"line":2900},30,[1590,2902,1719],{"class":1596},[1590,2904,2906,2908,2910],{"class":1592,"line":2905},31,[1590,2907,2427],{"class":1600},[1590,2909,1675],{"class":1596},[1590,2911,1666],{"class":1596},[1590,2913,2915,2917,2919,2921,2923,2925,2928,2930,2932],{"class":1592,"line":2914},32,[1590,2916,1742],{"class":1619},[1590,2918,1745],{"class":1596},[1590,2920,1749],{"class":1748},[1590,2922,1752],{"class":1600},[1590,2924,1704],{"class":1596},[1590,2926,2927],{"class":1700},"beforeDestroy：倒计时组件即将销毁，清除定时器",[1590,2929,1704],{"class":1596},[1590,2931,1771],{"class":1600},[1590,2933,1996],{"class":1596},[1590,2935,2937,2940,2942,2945,2948,2950],{"class":1592,"line":2936},33,[1590,2938,2939],{"class":1748},"        clearInterval",[1590,2941,1752],{"class":1600},[1590,2943,2944],{"class":1596},"this.",[1590,2946,2947],{"class":1619},"timer",[1590,2949,1771],{"class":1600},[1590,2951,1996],{"class":1596},[1590,2953,2955],{"class":1592,"line":2954},34,[1590,2956,1719],{"class":1596},[1590,2958,2960,2962,2964],{"class":1592,"line":2959},35,[1590,2961,2505],{"class":1600},[1590,2963,1675],{"class":1596},[1590,2965,1666],{"class":1596},[1590,2967,2969,2971,2973,2975,2977,2979,2982,2984,2986],{"class":1592,"line":2968},36,[1590,2970,1742],{"class":1619},[1590,2972,1745],{"class":1596},[1590,2974,1749],{"class":1748},[1590,2976,1752],{"class":1600},[1590,2978,1704],{"class":1596},[1590,2980,2981],{"class":1700},"destroyed：倒计时组件销毁完成",[1590,2983,1704],{"class":1596},[1590,2985,1771],{"class":1600},[1590,2987,1996],{"class":1596},[1590,2989,2991],{"class":1592,"line":2990},37,[1590,2992,1719],{"class":1596},[1590,2994,2996,2999,3001],{"class":1592,"line":2995},38,[1590,2997,2998],{"class":1600},"    methods",[1590,3000,1694],{"class":1596},[1590,3002,1666],{"class":1596},[1590,3004,3006,3009,3011],{"class":1592,"line":3005},39,[1590,3007,3008],{"class":1600},"        start",[1590,3010,1675],{"class":1596},[1590,3012,1666],{"class":1596},[1590,3014,3016,3019,3021,3023,3026,3028,3030,3033],{"class":1592,"line":3015},40,[1590,3017,3018],{"class":1596},"            this.",[1590,3020,2947],{"class":1619},[1590,3022,2151],{"class":1596},[1590,3024,3025],{"class":1748}," setInterval",[1590,3027,1752],{"class":1600},[1590,3029,1675],{"class":1596},[1590,3031,3032],{"class":2040}," =>",[1590,3034,1666],{"class":1596},[1590,3036,3038,3041,3044,3046,3048,3051,3053,3056],{"class":1592,"line":3037},41,[1590,3039,3040],{"class":1659},"                if",[1590,3042,3043],{"class":1600}," (",[1590,3045,2944],{"class":1596},[1590,3047,2851],{"class":1619},[1590,3049,3050],{"class":1596}," >",[1590,3052,2243],{"class":2242},[1590,3054,3055],{"class":1600},") ",[1590,3057,3058],{"class":1596},"{\n",[1590,3060,3062,3065,3067],{"class":1592,"line":3061},42,[1590,3063,3064],{"class":1596},"                    this.",[1590,3066,2851],{"class":1619},[1590,3068,3069],{"class":1596},"--;\n",[1590,3071,3073,3076,3079],{"class":1592,"line":3072},43,[1590,3074,3075],{"class":1596},"                }",[1590,3077,3078],{"class":1659}," else",[1590,3080,1666],{"class":1596},[1590,3082,3084,3087,3089,3091,3093,3095],{"class":1592,"line":3083},44,[1590,3085,3086],{"class":1748},"                    clearInterval",[1590,3088,1752],{"class":1600},[1590,3090,2944],{"class":1596},[1590,3092,2947],{"class":1619},[1590,3094,1771],{"class":1600},[1590,3096,1996],{"class":1596},[1590,3098,3100],{"class":1592,"line":3099},45,[1590,3101,3102],{"class":1596},"                }\n",[1590,3104,3106,3109,3112,3114],{"class":1592,"line":3105},46,[1590,3107,3108],{"class":1596},"            },",[1590,3110,3111],{"class":2242}," 1000",[1590,3113,1771],{"class":1600},[1590,3115,1996],{"class":1596},[1590,3117,3119],{"class":1592,"line":3118},47,[1590,3120,3121],{"class":1596},"        },\n",[1590,3123,3125],{"class":1592,"line":3124},48,[1590,3126,1719],{"class":1596},[1590,3128,3130],{"class":1592,"line":3129},49,[1590,3131,1788],{"class":1596},[1590,3133,3135,3137,3139],{"class":1592,"line":3134},50,[1590,3136,1623],{"class":1596},[1590,3138,1651],{"class":1600},[1590,3140,1604],{"class":1596},[1799,3142,3143],{},[1530,3144,3145],{},"倒计时案例，是生命周期钩子配合数据更新、定时器清理的经典场景。",[1534,3147],{},[1525,3149,3151],{"id":3150},"小节总结","🧾 小节总结",[1547,3153,3154,3157,3160,3163],{},[1550,3155,3156],{},"Vue2 生命周期钩子分为创建、挂载、更新、销毁四大阶段，帮助开发者在不同阶段执行代码。",[1550,3158,3159],{},"created 和 mounted 是最常用的钩子，分别用于数据准备和 DOM 操作。",[1550,3161,3162],{},"更新钩子 beforeUpdate 和 updated 适合监听数据变更，但注意性能影响。",[1550,3164,3165],{},"销毁钩子 beforeDestroy 和 destroyed 用于清理资源，避免内存泄漏。",[1534,3167],{},[1525,3169,3171],{"id":3170},"知识问答qa","❓ 知识问答（Q&A）",[1530,3173,3174],{},"Q：为什么不能在 beforeCreate 钩子中访问 data？",[1530,3176,3177],{},"A：因为 beforeCreate 阶段数据还未被初始化和观测，所以 data 里面的值暂时不可用。",[1530,3179,3180],{},"Q：mounted 和 created 钩子有什么区别？",[1530,3182,3183],{},"A：created 钩子是在数据准备好但还未挂载 DOM 阶段，mounted 是组件挂载到真实 DOM 后调用，可以操作页面元素。",[1530,3185,3186],{},"Q：如何防止组件销毁时内存泄漏？",[1530,3188,3189],{},"A：在 beforeDestroy 钩子中清理定时器、取消事件监听和释放资源，确保组件干净销毁。",[1534,3191],{},[1525,3193,3195],{"id":3194},"小练习","🧪 小练习",[1572,3197,3198],{"id":3198},"练习1",[1530,3200,3201],{},"写一个简单的 Vue2 计数器组件，利用 mounted 钩子自动初始化计数值，并用 beforeDestroy 清除定时器。",[1580,3203,3205],{"className":1582,"code":3204,"language":1584,"meta":1585,"style":1585},"\u003Ctemplate>\n    \u003Cdiv>\n        \u003Cp>计数器：{{ count }}\u003C/p>\n        \u003Cbutton @click=\"increment\">加一\u003C/button>\n    \u003C/div>\n\u003C/template>\n\n\u003Cscript>\nexport default {\n    data() {\n        return {\n            count: 0,\n            timer: null,\n        };\n    },\n    mounted() {\n        // 初始化计数器为 5\n    },\n    beforeDestroy() {\n        // 清除定时器\n    },\n    methods: {\n        increment() {\n            this.count++;\n        },\n    },\n};\n\u003C/script>\n",[1587,3206,3207,3215,3223,3240,3268,3276,3284,3288,3296,3304,3312,3318,3328,3336,3340,3344,3352,3357,3361,3369,3374,3378,3386,3395,3404,3408,3412,3416],{"__ignoreMap":1585},[1590,3208,3209,3211,3213],{"class":1592,"line":1593},[1590,3210,1597],{"class":1596},[1590,3212,1601],{"class":1600},[1590,3214,1604],{"class":1596},[1590,3216,3217,3219,3221],{"class":1592,"line":1607},[1590,3218,1610],{"class":1596},[1590,3220,1613],{"class":1600},[1590,3222,1604],{"class":1596},[1590,3224,3225,3227,3229,3231,3234,3236,3238],{"class":1592,"line":1630},[1590,3226,2587],{"class":1596},[1590,3228,1530],{"class":1600},[1590,3230,1616],{"class":1596},[1590,3232,3233],{"class":1619},"计数器：{{ count }}",[1590,3235,1623],{"class":1596},[1590,3237,1530],{"class":1600},[1590,3239,1604],{"class":1596},[1590,3241,3242,3244,3246,3248,3250,3252,3255,3257,3259,3262,3264,3266],{"class":1592,"line":1639},[1590,3243,2587],{"class":1596},[1590,3245,2607],{"class":1600},[1590,3247,2610],{"class":2040},[1590,3249,2044],{"class":1596},[1590,3251,2047],{"class":1596},[1590,3253,3254],{"class":1700},"increment",[1590,3256,2047],{"class":1596},[1590,3258,1616],{"class":1596},[1590,3260,3261],{"class":1619},"加一",[1590,3263,1623],{"class":1596},[1590,3265,2607],{"class":1600},[1590,3267,1604],{"class":1596},[1590,3269,3270,3272,3274],{"class":1592,"line":1646},[1590,3271,2635],{"class":1596},[1590,3273,1613],{"class":1600},[1590,3275,1604],{"class":1596},[1590,3277,3278,3280,3282],{"class":1592,"line":1656},[1590,3279,1623],{"class":1596},[1590,3281,1601],{"class":1600},[1590,3283,1604],{"class":1596},[1590,3285,3286],{"class":1592,"line":1669},[1590,3287,1643],{"emptyLinePlaceholder":1642},[1590,3289,3290,3292,3294],{"class":1592,"line":1680},[1590,3291,1597],{"class":1596},[1590,3293,1651],{"class":1600},[1590,3295,1604],{"class":1596},[1590,3297,3298,3300,3302],{"class":1592,"line":1688},[1590,3299,1660],{"class":1659},[1590,3301,1663],{"class":1659},[1590,3303,1666],{"class":1596},[1590,3305,3306,3308,3310],{"class":1592,"line":1710},[1590,3307,1672],{"class":1600},[1590,3309,1675],{"class":1596},[1590,3311,1666],{"class":1596},[1590,3313,3314,3316],{"class":1592,"line":1716},[1590,3315,1683],{"class":1659},[1590,3317,1666],{"class":1596},[1590,3319,3320,3322,3324,3326],{"class":1592,"line":1722},[1590,3321,2237],{"class":1600},[1590,3323,1694],{"class":1596},[1590,3325,2243],{"class":2242},[1590,3327,1707],{"class":1596},[1590,3329,3330,3332,3334],{"class":1592,"line":1732},[1590,3331,2698],{"class":1600},[1590,3333,1694],{"class":1596},[1590,3335,2703],{"class":1596},[1590,3337,3338],{"class":1592,"line":1739},[1590,3339,1713],{"class":1596},[1590,3341,3342],{"class":1592,"line":1780},[1590,3343,1719],{"class":1596},[1590,3345,3346,3348,3350],{"class":1592,"line":1785},[1590,3347,2096],{"class":1600},[1590,3349,1675],{"class":1596},[1590,3351,1666],{"class":1596},[1590,3353,3354],{"class":1592,"line":1791},[1590,3355,3356],{"class":1735},"        // 初始化计数器为 5\n",[1590,3358,3359],{"class":1592,"line":2743},[1590,3360,1719],{"class":1596},[1590,3362,3363,3365,3367],{"class":1592,"line":2748},[1590,3364,2427],{"class":1600},[1590,3366,1675],{"class":1596},[1590,3368,1666],{"class":1596},[1590,3370,3371],{"class":1592,"line":2757},[1590,3372,3373],{"class":1735},"        // 清除定时器\n",[1590,3375,3376],{"class":1592,"line":2779},[1590,3377,1719],{"class":1596},[1590,3379,3380,3382,3384],{"class":1592,"line":2784},[1590,3381,2998],{"class":1600},[1590,3383,1694],{"class":1596},[1590,3385,1666],{"class":1596},[1590,3387,3388,3391,3393],{"class":1592,"line":2793},[1590,3389,3390],{"class":1600},"        increment",[1590,3392,1675],{"class":1596},[1590,3394,1666],{"class":1596},[1590,3396,3397,3399,3401],{"class":1592,"line":2815},[1590,3398,3018],{"class":1596},[1590,3400,2286],{"class":1619},[1590,3402,3403],{"class":1596},"++;\n",[1590,3405,3406],{"class":1592,"line":2820},[1590,3407,3121],{"class":1596},[1590,3409,3410],{"class":1592,"line":2829},[1590,3411,1719],{"class":1596},[1590,3413,3414],{"class":1592,"line":2858},[1590,3415,1788],{"class":1596},[1590,3417,3418,3420,3422],{"class":1592,"line":2863},[1590,3419,1623],{"class":1596},[1590,3421,1651],{"class":1600},[1590,3423,1604],{"class":1596},[1572,3425,3426],{"id":3426},"练习2",[1530,3428,3429],{},"实现一个监听数据变化的组件，使用 beforeUpdate 和 updated 打印 count 变化过程。",[1580,3431,3433],{"className":1582,"code":3432,"language":1584,"meta":1585,"style":1585},"\u003Ctemplate>\n    \u003Cdiv>\n        \u003Cp>点击次数：{{ count }}\u003C/p>\n        \u003Cbutton @click=\"count++\">点击增加\u003C/button>\n    \u003C/div>\n\u003C/template>\n\n\u003Cscript>\nexport default {\n    data() {\n        return {\n            count: 0,\n        };\n    },\n    beforeUpdate() {\n        // 打印更新前 count 值\n    },\n    updated() {\n        // 打印更新后 count 值\n    },\n};\n\u003C/script>\n",[1587,3434,3435,3443,3451,3468,3496,3504,3512,3516,3524,3532,3540,3546,3556,3560,3564,3572,3577,3581,3589,3594,3598,3602],{"__ignoreMap":1585},[1590,3436,3437,3439,3441],{"class":1592,"line":1593},[1590,3438,1597],{"class":1596},[1590,3440,1601],{"class":1600},[1590,3442,1604],{"class":1596},[1590,3444,3445,3447,3449],{"class":1592,"line":1607},[1590,3446,1610],{"class":1596},[1590,3448,1613],{"class":1600},[1590,3450,1604],{"class":1596},[1590,3452,3453,3455,3457,3459,3462,3464,3466],{"class":1592,"line":1630},[1590,3454,2587],{"class":1596},[1590,3456,1530],{"class":1600},[1590,3458,1616],{"class":1596},[1590,3460,3461],{"class":1619},"点击次数：{{ count }}",[1590,3463,1623],{"class":1596},[1590,3465,1530],{"class":1600},[1590,3467,1604],{"class":1596},[1590,3469,3470,3472,3474,3476,3478,3480,3483,3485,3487,3490,3492,3494],{"class":1592,"line":1639},[1590,3471,2587],{"class":1596},[1590,3473,2607],{"class":1600},[1590,3475,2610],{"class":2040},[1590,3477,2044],{"class":1596},[1590,3479,2047],{"class":1596},[1590,3481,3482],{"class":1700},"count++",[1590,3484,2047],{"class":1596},[1590,3486,1616],{"class":1596},[1590,3488,3489],{"class":1619},"点击增加",[1590,3491,1623],{"class":1596},[1590,3493,2607],{"class":1600},[1590,3495,1604],{"class":1596},[1590,3497,3498,3500,3502],{"class":1592,"line":1646},[1590,3499,2635],{"class":1596},[1590,3501,1613],{"class":1600},[1590,3503,1604],{"class":1596},[1590,3505,3506,3508,3510],{"class":1592,"line":1656},[1590,3507,1623],{"class":1596},[1590,3509,1601],{"class":1600},[1590,3511,1604],{"class":1596},[1590,3513,3514],{"class":1592,"line":1669},[1590,3515,1643],{"emptyLinePlaceholder":1642},[1590,3517,3518,3520,3522],{"class":1592,"line":1680},[1590,3519,1597],{"class":1596},[1590,3521,1651],{"class":1600},[1590,3523,1604],{"class":1596},[1590,3525,3526,3528,3530],{"class":1592,"line":1688},[1590,3527,1660],{"class":1659},[1590,3529,1663],{"class":1659},[1590,3531,1666],{"class":1596},[1590,3533,3534,3536,3538],{"class":1592,"line":1710},[1590,3535,1672],{"class":1600},[1590,3537,1675],{"class":1596},[1590,3539,1666],{"class":1596},[1590,3541,3542,3544],{"class":1592,"line":1716},[1590,3543,1683],{"class":1659},[1590,3545,1666],{"class":1596},[1590,3547,3548,3550,3552,3554],{"class":1592,"line":1722},[1590,3549,2237],{"class":1600},[1590,3551,1694],{"class":1596},[1590,3553,2243],{"class":2242},[1590,3555,1707],{"class":1596},[1590,3557,3558],{"class":1592,"line":1732},[1590,3559,1713],{"class":1596},[1590,3561,3562],{"class":1592,"line":1739},[1590,3563,1719],{"class":1596},[1590,3565,3566,3568,3570],{"class":1592,"line":1780},[1590,3567,2258],{"class":1600},[1590,3569,1675],{"class":1596},[1590,3571,1666],{"class":1596},[1590,3573,3574],{"class":1592,"line":1785},[1590,3575,3576],{"class":1735},"        // 打印更新前 count 值\n",[1590,3578,3579],{"class":1592,"line":1791},[1590,3580,1719],{"class":1596},[1590,3582,3583,3585,3587],{"class":1592,"line":2743},[1590,3584,2338],{"class":1600},[1590,3586,1675],{"class":1596},[1590,3588,1666],{"class":1596},[1590,3590,3591],{"class":1592,"line":2748},[1590,3592,3593],{"class":1735},"        // 打印更新后 count 值\n",[1590,3595,3596],{"class":1592,"line":2757},[1590,3597,1719],{"class":1596},[1590,3599,3600],{"class":1592,"line":2779},[1590,3601,1788],{"class":1596},[1590,3603,3604,3606,3608],{"class":1592,"line":2784},[1590,3605,1623],{"class":1596},[1590,3607,1651],{"class":1600},[1590,3609,1604],{"class":1596},[1534,3611],{},[1530,3613,3614],{},"🎉 恭喜你已经掌握 Vue2 生命周期钩子、数据绑定与组件销毁清理技能啦！继续多练习，写出高质量的 Vue2 应用吧！",[2143,3616,3617],{},"html pre.shiki code .s86vT, html code.shiki .s86vT{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sd2Uz, html code.shiki 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.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 .s50WR, html code.shiki .s50WR{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .smPcV, html code.shiki .smPcV{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}",{"title":1585,"searchDepth":1607,"depth":1607,"links":3619},[3620,3621,3622,3626,3630,3634,3638,3639,3640,3641],{"id":1527,"depth":1607,"text":1528},{"id":1538,"depth":1607,"text":1539},{"id":1569,"depth":1607,"text":1570,"children":3623},[3624,3625],{"id":1574,"depth":1630,"text":1575},{"id":1806,"depth":1630,"text":1806},{"id":1936,"depth":1607,"text":1937,"children":3627},[3628,3629],{"id":1940,"depth":1630,"text":1941},{"id":2015,"depth":1630,"text":2015},{"id":2186,"depth":1607,"text":2187,"children":3631},[3632,3633],{"id":2193,"depth":1630,"text":2194},{"id":2309,"depth":1630,"text":2309},{"id":2390,"depth":1607,"text":2391,"children":3635},[3636,3637],{"id":2397,"depth":1630,"text":2398},{"id":2476,"depth":1630,"text":2476},{"id":2556,"depth":1607,"text":2557},{"id":3150,"depth":1607,"text":3151},{"id":3170,"depth":1607,"text":3171},{"id":3194,"depth":1607,"text":3195,"children":3642},[3643,3644],{"id":3198,"depth":1630,"text":3198},{"id":3426,"depth":1630,"text":3426},"本文将深入讲解 Vue2 中的生命周期钩子，帮助前端小白理解其运行机制及应用场景。","md",null,{},{"title":582},{"title":582,"description":3645},"LVbQ4n0Ya2",[3653,3655],{"title":578,"path":579,"stem":580,"description":3654,"children":-1},"了解 Vue2.0 响应式原理，掌握计算属性和侦听器的实用技巧",{"title":596,"path":592,"stem":593,"description":3656,"children":-1},"这篇文章带你了解 SPA 单页面应用的概念，前端路由的作用，深入认识 Vue Router，并学会在 Vue 2.0 项目中安装、配置和使用路由。",1784715110950]