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",[1568,1876,1750],{"class":1577},[1568,1878,1879],{"class":1574}," Handlebars",[1568,1881,1578],{"class":1577},[1568,1883,1884],{"class":1581},"compile",[1568,1886,1887],{"class":1574},"(template)",[1568,1889,1652],{"class":1577},[1568,1891,1893,1895,1898,1900,1903,1905,1908,1911,1914,1916,1919,1921,1924,1926],{"class":1570,"line":1892},11,[1568,1894,1744],{"class":1600},[1568,1896,1897],{"class":1574}," html ",[1568,1899,1750],{"class":1577},[1568,1901,1902],{"class":1581}," compiled",[1568,1904,1585],{"class":1574},[1568,1906,1907],{"class":1577},"{",[1568,1909,1910],{"class":1643}," name",[1568,1912,1913],{"class":1577},":",[1568,1915,1624],{"class":1577},[1568,1917,1918],{"class":1591},"hello",[1568,1920,1588],{"class":1577},[1568,1922,1923],{"class":1577}," }",[1568,1925,1611],{"class":1574},[1568,1927,1652],{"class":1577},[1568,1929,1931],{"class":1570,"line":1930},12,[1568,1932,1772],{"emptyLinePlaceholder":1771},[1568,1934,1936,1939,1941,1944,1947],{"class":1570,"line":1935},13,[1568,1937,1938],{"class":1574},"console",[1568,1940,1578],{"class":1577},[1568,1942,1943],{"class":1581},"log",[1568,1945,1946],{"class":1574},"(html)",[1568,1948,1652],{"class":1577},[1531,1950,1951],{},"输出：",[1558,1953,1955],{"className":1668,"code":1954,"language":1670,"meta":1564,"style":1564},"\u003Cp>HELLO\u003C/p>\n",[1553,1956,1957],{"__ignoreMap":1564},[1568,1958,1959,1961,1963,1965,1968,1970,1972],{"class":1570,"line":1571},[1568,1960,1677],{"class":1577},[1568,1962,1531],{"class":1643},[1568,1964,1682],{"class":1577},[1568,1966,1967],{"class":1574},"HELLO",[1568,1969,1688],{"class":1577},[1568,1971,1531],{"class":1643},[1568,1973,1693],{"class":1577},[1531,1975,1976],{},"Helper 的第一个参数是模板中传入的值，后面可以继续接更多参数。",[1540,1978],{},[1526,1980,1982],{"id":1981},"带多个参数的-helper","💡 带多个参数的 Helper",[1558,1984,1986],{"className":1560,"code":1985,"filename":1562,"language":1563,"meta":1564,"style":1564},"Handlebars.registerHelper('join', function (arr, separator) {\n    return arr.join(separator);\n});\n",[1553,1987,1988,2023,2043],{"__ignoreMap":1564},[1568,1989,1990,1992,1994,1996,1998,2000,2003,2005,2007,2009,2011,2014,2016,2019,2021],{"class":1570,"line":1571},[1568,1991,832],{"class":1574},[1568,1993,1578],{"class":1577},[1568,1995,1582],{"class":1581},[1568,1997,1585],{"class":1574},[1568,1999,1588],{"class":1577},[1568,2001,2002],{"class":1591},"join",[1568,2004,1588],{"class":1577},[1568,2006,1597],{"class":1577},[1568,2008,1601],{"class":1600},[1568,2010,1604],{"class":1577},[1568,2012,2013],{"class":1607},"arr",[1568,2015,1597],{"class":1577},[1568,2017,2018],{"class":1607}," separator",[1568,2020,1611],{"class":1577},[1568,2022,1614],{"class":1577},[1568,2024,2025,2027,2030,2032,2034,2036,2039,2041],{"class":1570,"line":1617},[1568,2026,1621],{"class":1620},[1568,2028,2029],{"class":1574}," arr",[1568,2031,1578],{"class":1577},[1568,2033,2002],{"class":1581},[1568,2035,1585],{"class":1643},[1568,2037,2038],{"class":1574},"separator",[1568,2040,1611],{"class":1643},[1568,2042,1652],{"class":1577},[1568,2044,2045,2047,2049],{"class":1570,"line":1655},[1568,2046,1658],{"class":1577},[1568,2048,1611],{"class":1574},[1568,2050,1652],{"class":1577},[1531,2052,2053],{},"模板：",[1558,2055,2057],{"className":1668,"code":2056,"language":1670,"meta":1564,"style":1564},"\u003Cp>标签：{{join tags \"、\"}}\u003C/p>\n",[1553,2058,2059],{"__ignoreMap":1564},[1568,2060,2061,2063,2065,2067,2070,2072,2074],{"class":1570,"line":1571},[1568,2062,1677],{"class":1577},[1568,2064,1531],{"class":1643},[1568,2066,1682],{"class":1577},[1568,2068,2069],{"class":1574},"标签：{{join tags \"、\"}}",[1568,2071,1688],{"class":1577},[1568,2073,1531],{"class":1643},[1568,2075,1693],{"class":1577},[1531,2077,2078],{},"传入：",[1558,2080,2082],{"className":1560,"code":2081,"language":1563,"meta":1564,"style":1564},"{ tags: ['前端', 'Handlebars', '模板引擎'] }\n",[1553,2083,2084],{"__ignoreMap":1564},[1568,2085,2086,2088,2092,2094,2097,2099,2102,2104,2106,2108,2110,2112,2114,2116,2119,2121,2124],{"class":1570,"line":1571},[1568,2087,1907],{"class":1577},[1568,2089,2091],{"class":2090},"sYGMc"," tags",[1568,2093,1913],{"class":1577},[1568,2095,2096],{"class":1643}," [",[1568,2098,1588],{"class":1577},[1568,2100,2101],{"class":1591},"前端",[1568,2103,1588],{"class":1577},[1568,2105,1597],{"class":1577},[1568,2107,1624],{"class":1577},[1568,2109,832],{"class":1591},[1568,2111,1588],{"class":1577},[1568,2113,1597],{"class":1577},[1568,2115,1624],{"class":1577},[1568,2117,2118],{"class":1591},"模板引擎",[1568,2120,1588],{"class":1577},[1568,2122,2123],{"class":1643},"] ",[1568,2125,2126],{"class":1577},"}\n",[1531,2128,1951],{},[1558,2130,2132],{"className":1668,"code":2131,"language":1670,"meta":1564,"style":1564},"\u003Cp>标签：前端、Handlebars、模板引擎\u003C/p>\n",[1553,2133,2134],{"__ignoreMap":1564},[1568,2135,2136,2138,2140,2142,2145,2147,2149],{"class":1570,"line":1571},[1568,2137,1677],{"class":1577},[1568,2139,1531],{"class":1643},[1568,2141,1682],{"class":1577},[1568,2143,2144],{"class":1574},"标签：前端、Handlebars、模板引擎",[1568,2146,1688],{"class":1577},[1568,2148,1531],{"class":1643},[1568,2150,1693],{"class":1577},[1724,2152,2153],{},[1531,2154,2155],{},"Helper 函数里可以使用任意 JavaScript 逻辑，包括调用其他库、处理日期、格式化文本等。",[1540,2157],{},[1526,2159,2161],{"id":2160},"️-实现比较运算-helper","⚖️ 实现比较运算 Helper",[1531,2163,2164,2165,2168,2169,2172],{},"Handlebars 原生的 ",[1553,2166,2167],{},"if"," 不支持表达式，我们可以写一个 ",[1553,2170,2171],{},"eq"," Helper 来判断是否相等：",[1558,2174,2176],{"className":1560,"code":2175,"filename":1562,"language":1563,"meta":1564,"style":1564},"Handlebars.registerHelper('eq', function (a, b) {\n    return a === b;\n});\n",[1553,2177,2178,2212,2226],{"__ignoreMap":1564},[1568,2179,2180,2182,2184,2186,2188,2190,2192,2194,2196,2198,2200,2203,2205,2208,2210],{"class":1570,"line":1571},[1568,2181,832],{"class":1574},[1568,2183,1578],{"class":1577},[1568,2185,1582],{"class":1581},[1568,2187,1585],{"class":1574},[1568,2189,1588],{"class":1577},[1568,2191,2171],{"class":1591},[1568,2193,1588],{"class":1577},[1568,2195,1597],{"class":1577},[1568,2197,1601],{"class":1600},[1568,2199,1604],{"class":1577},[1568,2201,2202],{"class":1607},"a",[1568,2204,1597],{"class":1577},[1568,2206,2207],{"class":1607}," b",[1568,2209,1611],{"class":1577},[1568,2211,1614],{"class":1577},[1568,2213,2214,2216,2219,2222,2224],{"class":1570,"line":1617},[1568,2215,1621],{"class":1620},[1568,2217,2218],{"class":1574}," a",[1568,2220,2221],{"class":1577}," ===",[1568,2223,2207],{"class":1574},[1568,2225,1652],{"class":1577},[1568,2227,2228,2230,2232],{"class":1570,"line":1655},[1568,2229,1658],{"class":1577},[1568,2231,1611],{"class":1574},[1568,2233,1652],{"class":1577},[1531,2235,2053],{},[1558,2237,2239],{"className":1668,"code":2238,"language":1670,"meta":1564,"style":1564},"{{#if (eq status \"success\")}}\n    \u003Cp>操作成功\u003C/p>\n{{/if}}\n",[1553,2240,2241,2246,2264],{"__ignoreMap":1564},[1568,2242,2243],{"class":1570,"line":1571},[1568,2244,2245],{"class":1574},"{{#if (eq status \"success\")}}\n",[1568,2247,2248,2251,2253,2255,2258,2260,2262],{"class":1570,"line":1617},[1568,2249,2250],{"class":1577},"    \u003C",[1568,2252,1531],{"class":1643},[1568,2254,1682],{"class":1577},[1568,2256,2257],{"class":1574},"操作成功",[1568,2259,1688],{"class":1577},[1568,2261,1531],{"class":1643},[1568,2263,1693],{"class":1577},[1568,2265,2266],{"class":1570,"line":1655},[1568,2267,2268],{"class":1574},"{{/if}}\n",[1531,2270,2078],{},[1558,2272,2274],{"className":1560,"code":2273,"language":1563,"meta":1564,"style":1564},"{ status: 'success' }\n",[1553,2275,2276],{"__ignoreMap":1564},[1568,2277,2278,2280,2283,2285,2287,2290,2292],{"class":1570,"line":1571},[1568,2279,1907],{"class":1577},[1568,2281,2282],{"class":2090}," status",[1568,2284,1913],{"class":1577},[1568,2286,1624],{"class":1577},[1568,2288,2289],{"class":1591},"success",[1568,2291,1588],{"class":1577},[1568,2293,2294],{"class":1577}," }\n",[1531,2296,1951],{},[1558,2298,2300],{"className":1668,"code":2299,"language":1670,"meta":1564,"style":1564},"\u003Cp>操作成功\u003C/p>\n",[1553,2301,2302],{"__ignoreMap":1564},[1568,2303,2304,2306,2308,2310,2312,2314,2316],{"class":1570,"line":1571},[1568,2305,1677],{"class":1577},[1568,2307,1531],{"class":1643},[1568,2309,1682],{"class":1577},[1568,2311,2257],{"class":1574},[1568,2313,1688],{"class":1577},[1568,2315,1531],{"class":1643},[1568,2317,1693],{"class":1577},[1724,2319,2320],{},[1531,2321,2322,2323,2325,2326,2328],{},"用括号 ",[1553,2324,1825],{}," 包裹 Helper 调用，可以把结果作为另一个 Helper（如 ",[1553,2327,2167],{},"）的参数。",[1540,2330],{},[1526,2332,2334],{"id":2333},"常用的自定义-helper-示例","🛠 常用的自定义 Helper 示例",[2336,2337,2339],"h3",{"id":2338},"_1-格式化日期","1. 格式化日期",[1558,2341,2343],{"className":1560,"code":2342,"filename":1562,"language":1563,"meta":1564,"style":1564},"Handlebars.registerHelper('formatDate', function (date) {\n    const d = new Date(date);\n    return `${d.getFullYear()}-${d.getMonth() + 1}-${d.getDate()}`;\n});\n",[1553,2344,2345,2375,2400,2461],{"__ignoreMap":1564},[1568,2346,2347,2349,2351,2353,2355,2357,2360,2362,2364,2366,2368,2371,2373],{"class":1570,"line":1571},[1568,2348,832],{"class":1574},[1568,2350,1578],{"class":1577},[1568,2352,1582],{"class":1581},[1568,2354,1585],{"class":1574},[1568,2356,1588],{"class":1577},[1568,2358,2359],{"class":1591},"formatDate",[1568,2361,1588],{"class":1577},[1568,2363,1597],{"class":1577},[1568,2365,1601],{"class":1600},[1568,2367,1604],{"class":1577},[1568,2369,2370],{"class":1607},"date",[1568,2372,1611],{"class":1577},[1568,2374,1614],{"class":1577},[1568,2376,2377,2380,2383,2386,2389,2392,2394,2396,2398],{"class":1570,"line":1617},[1568,2378,2379],{"class":1600},"    const",[1568,2381,2382],{"class":1574}," d",[1568,2384,2385],{"class":1577}," =",[1568,2387,2388],{"class":1577}," new",[1568,2390,2391],{"class":1581}," Date",[1568,2393,1585],{"class":1643},[1568,2395,2370],{"class":1574},[1568,2397,1611],{"class":1643},[1568,2399,1652],{"class":1577},[1568,2401,2402,2404,2407,2410,2412,2415,2417,2419,2422,2425,2427,2429,2432,2435,2438,2441,2443,2445,2447,2449,2451,2454,2456,2459],{"class":1570,"line":1655},[1568,2403,1621],{"class":1620},[1568,2405,2406],{"class":1577}," `${",[1568,2408,2409],{"class":1574},"d",[1568,2411,1578],{"class":1577},[1568,2413,2414],{"class":1581},"getFullYear",[1568,2416,1825],{"class":1574},[1568,2418,1658],{"class":1577},[1568,2420,2421],{"class":1591},"-",[1568,2423,2424],{"class":1577},"${",[1568,2426,2409],{"class":1574},[1568,2428,1578],{"class":1577},[1568,2430,2431],{"class":1581},"getMonth",[1568,2433,2434],{"class":1574},"() ",[1568,2436,2437],{"class":1577},"+",[1568,2439,2440],{"class":1646}," 1",[1568,2442,1658],{"class":1577},[1568,2444,2421],{"class":1591},[1568,2446,2424],{"class":1577},[1568,2448,2409],{"class":1574},[1568,2450,1578],{"class":1577},[1568,2452,2453],{"class":1581},"getDate",[1568,2455,1825],{"class":1574},[1568,2457,2458],{"class":1577},"}`",[1568,2460,1652],{"class":1577},[1568,2462,2463,2465,2467],{"class":1570,"line":1781},[1568,2464,1658],{"class":1577},[1568,2466,1611],{"class":1574},[1568,2468,1652],{"class":1577},[2336,2470,2472],{"id":2471},"_2-判断数组是否为空","2. 判断数组是否为空",[1558,2474,2476],{"className":1560,"code":2475,"filename":1562,"language":1563,"meta":1564,"style":1564},"Handlebars.registerHelper('isEmpty', function (arr) {\n    return !arr || arr.length === 0;\n});\n",[1553,2477,2478,2507,2533],{"__ignoreMap":1564},[1568,2479,2480,2482,2484,2486,2488,2490,2493,2495,2497,2499,2501,2503,2505],{"class":1570,"line":1571},[1568,2481,832],{"class":1574},[1568,2483,1578],{"class":1577},[1568,2485,1582],{"class":1581},[1568,2487,1585],{"class":1574},[1568,2489,1588],{"class":1577},[1568,2491,2492],{"class":1591},"isEmpty",[1568,2494,1588],{"class":1577},[1568,2496,1597],{"class":1577},[1568,2498,1601],{"class":1600},[1568,2500,1604],{"class":1577},[1568,2502,2013],{"class":1607},[1568,2504,1611],{"class":1577},[1568,2506,1614],{"class":1577},[1568,2508,2509,2511,2514,2516,2519,2521,2523,2526,2528,2531],{"class":1570,"line":1617},[1568,2510,1621],{"class":1620},[1568,2512,2513],{"class":1577}," !",[1568,2515,2013],{"class":1574},[1568,2517,2518],{"class":1577}," ||",[1568,2520,2029],{"class":1574},[1568,2522,1578],{"class":1577},[1568,2524,2525],{"class":1574},"length",[1568,2527,2221],{"class":1577},[1568,2529,2530],{"class":1646}," 0",[1568,2532,1652],{"class":1577},[1568,2534,2535,2537,2539],{"class":1570,"line":1655},[1568,2536,1658],{"class":1577},[1568,2538,1611],{"class":1574},[1568,2540,1652],{"class":1577},[2336,2542,2544],{"id":2543},"_3-计算索引加一","3. 计算索引加一",[1558,2546,2548],{"className":1560,"code":2547,"filename":1562,"language":1563,"meta":1564,"style":1564},"Handlebars.registerHelper('addOne', function (index) {\n    return index + 1;\n});\n",[1553,2549,2550,2580,2593],{"__ignoreMap":1564},[1568,2551,2552,2554,2556,2558,2560,2562,2565,2567,2569,2571,2573,2576,2578],{"class":1570,"line":1571},[1568,2553,832],{"class":1574},[1568,2555,1578],{"class":1577},[1568,2557,1582],{"class":1581},[1568,2559,1585],{"class":1574},[1568,2561,1588],{"class":1577},[1568,2563,2564],{"class":1591},"addOne",[1568,2566,1588],{"class":1577},[1568,2568,1597],{"class":1577},[1568,2570,1601],{"class":1600},[1568,2572,1604],{"class":1577},[1568,2574,2575],{"class":1607},"index",[1568,2577,1611],{"class":1577},[1568,2579,1614],{"class":1577},[1568,2581,2582,2584,2587,2589,2591],{"class":1570,"line":1617},[1568,2583,1621],{"class":1620},[1568,2585,2586],{"class":1574}," index",[1568,2588,1632],{"class":1577},[1568,2590,2440],{"class":1646},[1568,2592,1652],{"class":1577},[1568,2594,2595,2597,2599],{"class":1570,"line":1655},[1568,2596,1658],{"class":1577},[1568,2598,1611],{"class":1574},[1568,2600,1652],{"class":1577},[1531,2602,2053],{},[1558,2604,2606],{"className":1668,"code":2605,"language":1670,"meta":1564,"style":1564},"\u003Cul>\n    {{#each list}}\n        \u003Cli>{{addOne @index}}. {{this}}\u003C/li>\n    {{/each}}\n\u003C/ul>\n",[1553,2607,2608,2617,2622,2641,2646],{"__ignoreMap":1564},[1568,2609,2610,2612,2615],{"class":1570,"line":1571},[1568,2611,1677],{"class":1577},[1568,2613,2614],{"class":1643},"ul",[1568,2616,1693],{"class":1577},[1568,2618,2619],{"class":1570,"line":1617},[1568,2620,2621],{"class":1574},"    {{#each list}}\n",[1568,2623,2624,2627,2630,2632,2635,2637,2639],{"class":1570,"line":1655},[1568,2625,2626],{"class":1577},"        \u003C",[1568,2628,2629],{"class":1643},"li",[1568,2631,1682],{"class":1577},[1568,2633,2634],{"class":1574},"{{addOne @index}}. {{this}}",[1568,2636,1688],{"class":1577},[1568,2638,2629],{"class":1643},[1568,2640,1693],{"class":1577},[1568,2642,2643],{"class":1570,"line":1781},[1568,2644,2645],{"class":1574},"    {{/each}}\n",[1568,2647,2648,2650,2652],{"class":1570,"line":1812},[1568,2649,1688],{"class":1577},[1568,2651,2614],{"class":1643},[1568,2653,1693],{"class":1577},[1540,2655],{},[1526,2657,2659],{"id":2658},"helper-里要注意的-this","🪤 Helper 里要注意的 this",[1531,2661,2662,2663,2666],{},"在 Helper 函数里，",[1553,2664,2665],{},"this"," 指向当前模板上下文。如果在块级 Helper 里使用，要注意上下文变化。",[1558,2668,2670],{"className":1560,"code":2669,"filename":1562,"language":1563,"meta":1564,"style":1564},"Handlebars.registerHelper('showContext', function () {\n    console.log(this);\n});\n",[1553,2671,2672,2698,2715],{"__ignoreMap":1564},[1568,2673,2674,2676,2678,2680,2682,2684,2687,2689,2691,2693,2696],{"class":1570,"line":1571},[1568,2675,832],{"class":1574},[1568,2677,1578],{"class":1577},[1568,2679,1582],{"class":1581},[1568,2681,1585],{"class":1574},[1568,2683,1588],{"class":1577},[1568,2685,2686],{"class":1591},"showContext",[1568,2688,1588],{"class":1577},[1568,2690,1597],{"class":1577},[1568,2692,1601],{"class":1600},[1568,2694,2695],{"class":1577}," ()",[1568,2697,1614],{"class":1577},[1568,2699,2700,2703,2705,2707,2709,2711,2713],{"class":1570,"line":1617},[1568,2701,2702],{"class":1574},"    console",[1568,2704,1578],{"class":1577},[1568,2706,1943],{"class":1581},[1568,2708,1585],{"class":1643},[1568,2710,2665],{"class":1577},[1568,2712,1611],{"class":1643},[1568,2714,1652],{"class":1577},[1568,2716,2717,2719,2721],{"class":1570,"line":1655},[1568,2718,1658],{"class":1577},[1568,2720,1611],{"class":1574},[1568,2722,1652],{"class":1577},[1531,2724,2725,2726,2728],{},"一般情况下，简单 Helper 不会用到 ",[1553,2727,2665],{},"，了解即可。",[1540,2730],{},[1526,2732,2734],{"id":2733},"小节总结","🧾 小节总结",[2614,2736,2737,2740,2747,2750],{},[2629,2738,2739],{},"自定义 Helper 用于扩展模板能力，处理格式化、比较、计算等逻辑。",[2629,2741,2742,2743,2746],{},"使用 ",[1553,2744,2745],{},"Handlebars.registerHelper()"," 注册 Helper。",[2629,2748,2749],{},"Helper 可以接受一个或多个参数。",[2629,2751,2752,2753,2755],{},"用 ",[1553,2754,1825],{}," 可以把 Helper 结果作为另一个 Helper 的参数。",[1540,2757],{},[1526,2759,2761],{"id":2760},"知识问答","❓ 知识问答",[1531,2763,2764],{},[1535,2765,2766,2767,2770],{},"Q1：Handlebars 模板里能写 ",[1553,2768,2769],{},"{{a + b}}"," 吗？",[1531,2772,2773,2774,2777],{},"A：不能。Handlebars 不支持表达式，需要用自定义 Helper 实现，比如 ",[1553,2775,2776],{},"{{add a b}}","。",[1531,2779,2780],{},[1535,2781,2782],{},"Q2：Helper 和 Partial 有什么区别？",[1531,2784,2785],{},"A：Helper 是一段 JavaScript 逻辑，返回一个值；Partial 是一段模板片段，返回一段 HTML。Helper 处理数据，Partial 复用结构。",[1531,2787,2788],{},[1535,2789,2790],{},"Q3：自定义 Helper 可以返回 HTML 吗？",[1531,2792,2793,2794,2797],{},"A：可以，但返回的字符串默认会被转义。如果想输出原始 HTML，需要用 ",[1553,2795,2796],{},"new Handlebars.SafeString(html)"," 包裹。",[1531,2799,2800],{},[1535,2801,2802],{},"Q4：Helper 命名有什么规范吗？",[1531,2804,2805,2806,2808,2809,2812],{},"A：建议用驼峰命名，避免和内置 Helper 重名，比如不要用 ",[1553,2807,2167],{},"、",[1553,2810,2811],{},"each"," 等内置名称。",[1540,2814],{},[1526,2816,2818],{"id":2817},"小练习","🧪 小练习",[1531,2820,2821,2822,2824],{},"请编写一个 ",[1553,2823,2359],{}," Helper，并渲染以下数据：",[1558,2826,2828],{"className":1560,"code":2827,"filename":1562,"language":1563,"meta":1564,"style":1564},"const data = {\n    createdAt: '2024-10-01T08:00:00.000Z'\n};\n\n// 请在这里注册 formatDate Helper\n// 要求：把日期格式化为 YYYY-MM-DD\n",[1553,2829,2830,2841,2856,2861,2865,2870],{"__ignoreMap":1564},[1568,2831,2832,2834,2837,2839],{"class":1570,"line":1571},[1568,2833,1744],{"class":1600},[1568,2835,2836],{"class":1574}," data ",[1568,2838,1750],{"class":1577},[1568,2840,1614],{"class":1577},[1568,2842,2843,2846,2848,2850,2853],{"class":1570,"line":1617},[1568,2844,2845],{"class":1643},"    createdAt",[1568,2847,1913],{"class":1577},[1568,2849,1624],{"class":1577},[1568,2851,2852],{"class":1591},"2024-10-01T08:00:00.000Z",[1568,2854,2855],{"class":1577},"'\n",[1568,2857,2858],{"class":1570,"line":1655},[1568,2859,2860],{"class":1577},"};\n",[1568,2862,2863],{"class":1570,"line":1781},[1568,2864,1772],{"emptyLinePlaceholder":1771},[1568,2866,2867],{"class":1570,"line":1812},[1568,2868,2869],{"class":1777},"// 请在这里注册 formatDate Helper\n",[1568,2871,2872],{"class":1570,"line":1830},[1568,2873,2874],{"class":1777},"// 要求：把日期格式化为 YYYY-MM-DD\n",[1540,2876],{},[1531,2878,2879],{},"🎉 恭喜你掌握了 Handlebars 的自定义 Helper！下一篇我们会学习预编译和运行时，了解如何在生产环境中更高效地使用 Handlebars。",[2881,2882,2883],"style",{},"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 .swgpB, html code.shiki .swgpB{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sIEYB, html code.shiki .sIEYB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .s50WR, html code.shiki .s50WR{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}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 .s8pZq, html 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.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 .sYGMc, html code.shiki .sYGMc{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}",{"title":1564,"searchDepth":1617,"depth":1617,"links":2885},[2886,2887,2888,2889,2890,2891,2896,2897,2898,2899],{"id":1528,"depth":1617,"text":1529},{"id":1544,"depth":1617,"text":1545},{"id":1733,"depth":1617,"text":1734},{"id":1981,"depth":1617,"text":1982},{"id":2160,"depth":1617,"text":2161},{"id":2333,"depth":1617,"text":2334,"children":2892},[2893,2894,2895],{"id":2338,"depth":1655,"text":2339},{"id":2471,"depth":1655,"text":2472},{"id":2543,"depth":1655,"text":2544},{"id":2658,"depth":1617,"text":2659},{"id":2733,"depth":1617,"text":2734},{"id":2760,"depth":1617,"text":2761},{"id":2817,"depth":1617,"text":2818},"学会注册和使用自定义 Helper，处理模板中不适合写复杂逻辑的场景，如格式化、比较运算等。","md",null,{},{"title":856},{"title":1521,"description":2900},"duArW69xQW",[2908,2910],{"title":852,"path":853,"stem":854,"description":2909,"children":-1},"学会使用 Partials 拆分和复用模板片段，掌握局部模板注册、传参和动态复用技巧。",{"title":860,"path":861,"stem":862,"description":2911,"children":-1},"了解 Handlebars 的预编译机制，学会使用 handlebars-runtime 减少浏览器端开销，提升模板渲染性能。",1784715111291]