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html;\n\u003C/script>\n","index.html","html",[1617,1808,1809,1815,1849,1856,1862,1885,1890,1896,1905,1974,2008],{"__ignoreMap":1670},[1674,1810,1811],{"class":1676,"line":1677},[1674,1812,1814],{"class":1813},"syuKq","\u003C!-- 1. 引入 Handlebars 运行时（只负责渲染，体积小） -->\n",[1674,1816,1818,1822,1826,1830,1833,1836,1839,1841,1844,1846],{"class":1676,"line":1817},2,[1674,1819,1821],{"class":1820},"s86vT","\u003C",[1674,1823,1825],{"class":1824},"sd2Uz","script",[1674,1827,1829],{"class":1828},"s50WR"," src",[1674,1831,1832],{"class":1820},"=",[1674,1834,1835],{"class":1820},"\"",[1674,1837,1838],{"class":1684},"node_modules/handlebars/dist/handlebars.runtime.min.js",[1674,1840,1835],{"class":1820},[1674,1842,1843],{"class":1820},">\u003C/",[1674,1845,1825],{"class":1824},[1674,1847,1848],{"class":1820},">\n",[1674,1850,1852],{"class":1676,"line":1851},3,[1674,1853,1855],{"emptyLinePlaceholder":1854},true,"\n",[1674,1857,1859],{"class":1676,"line":1858},4,[1674,1860,1861],{"class":1813},"\u003C!-- 2. 引入预编译好的模板文件 -->\n",[1674,1863,1865,1867,1869,1871,1873,1875,1877,1879,1881,1883],{"class":1676,"line":1864},5,[1674,1866,1821],{"class":1820},[1674,1868,1825],{"class":1824},[1674,1870,1829],{"class":1828},[1674,1872,1832],{"class":1820},[1674,1874,1835],{"class":1820},[1674,1876,1770],{"class":1684},[1674,1878,1835],{"class":1820},[1674,1880,1843],{"class":1820},[1674,1882,1825],{"class":1824},[1674,1884,1848],{"class":1820},[1674,1886,1888],{"class":1676,"line":1887},6,[1674,1889,1855],{"emptyLinePlaceholder":1854},[1674,1891,1893],{"class":1676,"line":1892},7,[1674,1894,1895],{"class":1813},"\u003C!-- 3. 传入数据，得到 HTML -->\n",[1674,1897,1899,1901,1903],{"class":1676,"line":1898},8,[1674,1900,1821],{"class":1820},[1674,1902,1825],{"class":1824},[1674,1904,1848],{"class":1820},[1674,1906,1908,1911,1915,1917,1920,1923,1926,1928,1932,1935,1938,1941,1944,1947,1950,1953,1956,1959,1961,1965,1968,1971],{"class":1676,"line":1907},9,[1674,1909,1910],{"class":1828},"    var",[1674,1912,1914],{"class":1913},"sndM8"," html ",[1674,1916,1832],{"class":1820},[1674,1918,1919],{"class":1913}," Handlebars",[1674,1921,1922],{"class":1820},".",[1674,1924,1925],{"class":1913},"templates",[1674,1927,1922],{"class":1820},[1674,1929,1931],{"class":1930},"swgpB","user",[1674,1933,1934],{"class":1913},"(",[1674,1936,1937],{"class":1820},"{",[1674,1939,1940],{"class":1824}," name",[1674,1942,1943],{"class":1820},":",[1674,1945,1946],{"class":1820}," '",[1674,1948,1949],{"class":1684},"小明",[1674,1951,1952],{"class":1820},"'",[1674,1954,1955],{"class":1820},",",[1674,1957,1958],{"class":1824}," age",[1674,1960,1943],{"class":1820},[1674,1962,1964],{"class":1963},"smPcV"," 18",[1674,1966,1967],{"class":1820}," }",[1674,1969,1970],{"class":1913},")",[1674,1972,1973],{"class":1820},";\n",[1674,1975,1977,1980,1982,1985,1987,1989,1992,1994,1996,1998,2001,2003,2006],{"class":1676,"line":1976},10,[1674,1978,1979],{"class":1913},"    document",[1674,1981,1922],{"class":1820},[1674,1983,1984],{"class":1930},"getElementById",[1674,1986,1934],{"class":1913},[1674,1988,1952],{"class":1820},[1674,1990,1991],{"class":1684},"app",[1674,1993,1952],{"class":1820},[1674,1995,1970],{"class":1913},[1674,1997,1922],{"class":1820},[1674,1999,2000],{"class":1913},"innerHTML ",[1674,2002,1832],{"class":1820},[1674,2004,2005],{"class":1913}," html",[1674,2007,1973],{"class":1820},[1674,2009,2011,2014,2016],{"class":1676,"line":2010},11,[1674,2012,2013],{"class":1820},"\u003C/",[1674,2015,1825],{"class":1824},[1674,2017,1848],{"class":1820},[1642,2019,2020],{},[1531,2021,2022,2025,2026,2028,2029,2032,2033,1620],{},[1617,2023,2024],{},"Handlebars.templates.user"," 这个名字对应你预编译时的文件名 ",[1617,2027,1766],{},"。如果文件叫 ",[1617,2030,2031],{},"card.hbs","，那么调用方式就是 ",[1617,2034,2035],{},"Handlebars.templates.card(数据)",[2037,2038,2039],"warning",{},[1531,2040,2041,2042,2044,2045,2048],{},"浏览器里一定要引入 ",[1617,2043,1782],{},"，而不是完整版 ",[1617,2046,2047],{},"handlebars.min.js","。完整版会把编译功能也带进来，体积更大，预编译就没意义了。",[1540,2050],{},[1526,2052,2054],{"id":2053},"不想用命令行怎么在-nodejs-里预编译","⚡ 不想用命令行，怎么在 Node.js 里预编译",[1531,2056,2057],{},"如果你希望用 Node.js 脚本代替命令行，可以这样做：",[1665,2059,2064],{"className":2060,"code":2061,"filename":2062,"language":2063,"meta":1670,"style":1670},"language-js shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","const fs = require('fs');\nconst Handlebars = require('handlebars');\n\n// 1. 读取模板文件内容\nconst source = fs.readFileSync('./src/templates/user.hbs', 'utf-8');\n\n// 2. 预编译，得到中间描述对象\nconst spec = Handlebars.precompile(source);\n\n// 3. 保存到 JS 文件\nfs.writeFileSync('./dist/templates/user.js', `module.exports = ${spec};`);\n","build.js","js",[1617,2065,2066,2092,2116,2120,2125,2164,2168,2173,2194,2198,2203],{"__ignoreMap":1670},[1674,2067,2068,2071,2074,2076,2079,2081,2083,2086,2088,2090],{"class":1676,"line":1677},[1674,2069,2070],{"class":1828},"const",[1674,2072,2073],{"class":1913}," fs ",[1674,2075,1832],{"class":1820},[1674,2077,2078],{"class":1930}," require",[1674,2080,1934],{"class":1913},[1674,2082,1952],{"class":1820},[1674,2084,2085],{"class":1684},"fs",[1674,2087,1952],{"class":1820},[1674,2089,1970],{"class":1913},[1674,2091,1973],{"class":1820},[1674,2093,2094,2096,2099,2101,2103,2105,2107,2110,2112,2114],{"class":1676,"line":1817},[1674,2095,2070],{"class":1828},[1674,2097,2098],{"class":1913}," Handlebars ",[1674,2100,1832],{"class":1820},[1674,2102,2078],{"class":1930},[1674,2104,1934],{"class":1913},[1674,2106,1952],{"class":1820},[1674,2108,2109],{"class":1684},"handlebars",[1674,2111,1952],{"class":1820},[1674,2113,1970],{"class":1913},[1674,2115,1973],{"class":1820},[1674,2117,2118],{"class":1676,"line":1851},[1674,2119,1855],{"emptyLinePlaceholder":1854},[1674,2121,2122],{"class":1676,"line":1858},[1674,2123,2124],{"class":1813},"// 1. 读取模板文件内容\n",[1674,2126,2127,2129,2132,2134,2137,2139,2142,2144,2146,2149,2151,2153,2155,2158,2160,2162],{"class":1676,"line":1864},[1674,2128,2070],{"class":1828},[1674,2130,2131],{"class":1913}," source ",[1674,2133,1832],{"class":1820},[1674,2135,2136],{"class":1913}," fs",[1674,2138,1922],{"class":1820},[1674,2140,2141],{"class":1930},"readFileSync",[1674,2143,1934],{"class":1913},[1674,2145,1952],{"class":1820},[1674,2147,2148],{"class":1684},"./src/templates/user.hbs",[1674,2150,1952],{"class":1820},[1674,2152,1955],{"class":1820},[1674,2154,1946],{"class":1820},[1674,2156,2157],{"class":1684},"utf-8",[1674,2159,1952],{"class":1820},[1674,2161,1970],{"class":1913},[1674,2163,1973],{"class":1820},[1674,2165,2166],{"class":1676,"line":1887},[1674,2167,1855],{"emptyLinePlaceholder":1854},[1674,2169,2170],{"class":1676,"line":1892},[1674,2171,2172],{"class":1813},"// 2. 预编译，得到中间描述对象\n",[1674,2174,2175,2177,2180,2182,2184,2186,2189,2192],{"class":1676,"line":1898},[1674,2176,2070],{"class":1828},[1674,2178,2179],{"class":1913}," spec ",[1674,2181,1832],{"class":1820},[1674,2183,1919],{"class":1913},[1674,2185,1922],{"class":1820},[1674,2187,2188],{"class":1930},"precompile",[1674,2190,2191],{"class":1913},"(source)",[1674,2193,1973],{"class":1820},[1674,2195,2196],{"class":1676,"line":1907},[1674,2197,1855],{"emptyLinePlaceholder":1854},[1674,2199,2200],{"class":1676,"line":1976},[1674,2201,2202],{"class":1813},"// 3. 保存到 JS 文件\n",[1674,2204,2205,2207,2209,2212,2214,2216,2219,2221,2223,2226,2229,2232,2235,2238,2241,2244,2246],{"class":1676,"line":2010},[1674,2206,2085],{"class":1913},[1674,2208,1922],{"class":1820},[1674,2210,2211],{"class":1930},"writeFileSync",[1674,2213,1934],{"class":1913},[1674,2215,1952],{"class":1820},[1674,2217,2218],{"class":1684},"./dist/templates/user.js",[1674,2220,1952],{"class":1820},[1674,2222,1955],{"class":1820},[1674,2224,2225],{"class":1820}," `",[1674,2227,2228],{"class":1684},"module.exports = ",[1674,2230,2231],{"class":1820},"${",[1674,2233,2234],{"class":1913},"spec",[1674,2236,2237],{"class":1820},"}",[1674,2239,2240],{"class":1684},";",[1674,2242,2243],{"class":1820},"`",[1674,2245,1970],{"class":1913},[1674,2247,1973],{"class":1820},[1531,2249,2250,2251,2253,2254,2257],{},"预编译得到的 ",[1617,2252,2234],{}," 还不能直接调用，需要先用 ",[1617,2255,2256],{},"Handlebars.template()"," 包装一下：",[1665,2259,2262],{"className":2060,"code":2260,"filename":2261,"language":2063,"meta":1670,"style":1670},"const Handlebars = require('handlebars/runtime');\nconst spec = require('./dist/templates/user.js');\n\n// 把预编译结果包装成可执行的模板函数\nconst template = Handlebars.template(spec);\n\n// 传入数据渲染\nconst html = template({ name: '小明', age: 18 });\nconsole.log(html);\n","index.js",[1617,2263,2264,2287,2309,2313,2318,2339,2343,2348,2387],{"__ignoreMap":1670},[1674,2265,2266,2268,2270,2272,2274,2276,2278,2281,2283,2285],{"class":1676,"line":1677},[1674,2267,2070],{"class":1828},[1674,2269,2098],{"class":1913},[1674,2271,1832],{"class":1820},[1674,2273,2078],{"class":1930},[1674,2275,1934],{"class":1913},[1674,2277,1952],{"class":1820},[1674,2279,2280],{"class":1684},"handlebars/runtime",[1674,2282,1952],{"class":1820},[1674,2284,1970],{"class":1913},[1674,2286,1973],{"class":1820},[1674,2288,2289,2291,2293,2295,2297,2299,2301,2303,2305,2307],{"class":1676,"line":1817},[1674,2290,2070],{"class":1828},[1674,2292,2179],{"class":1913},[1674,2294,1832],{"class":1820},[1674,2296,2078],{"class":1930},[1674,2298,1934],{"class":1913},[1674,2300,1952],{"class":1820},[1674,2302,2218],{"class":1684},[1674,2304,1952],{"class":1820},[1674,2306,1970],{"class":1913},[1674,2308,1973],{"class":1820},[1674,2310,2311],{"class":1676,"line":1851},[1674,2312,1855],{"emptyLinePlaceholder":1854},[1674,2314,2315],{"class":1676,"line":1858},[1674,2316,2317],{"class":1813},"// 把预编译结果包装成可执行的模板函数\n",[1674,2319,2320,2322,2325,2327,2329,2331,2334,2337],{"class":1676,"line":1864},[1674,2321,2070],{"class":1828},[1674,2323,2324],{"class":1913}," template ",[1674,2326,1832],{"class":1820},[1674,2328,1919],{"class":1913},[1674,2330,1922],{"class":1820},[1674,2332,2333],{"class":1930},"template",[1674,2335,2336],{"class":1913},"(spec)",[1674,2338,1973],{"class":1820},[1674,2340,2341],{"class":1676,"line":1887},[1674,2342,1855],{"emptyLinePlaceholder":1854},[1674,2344,2345],{"class":1676,"line":1892},[1674,2346,2347],{"class":1813},"// 传入数据渲染\n",[1674,2349,2350,2352,2354,2356,2359,2361,2363,2365,2367,2369,2371,2373,2375,2377,2379,2381,2383,2385],{"class":1676,"line":1898},[1674,2351,2070],{"class":1828},[1674,2353,1914],{"class":1913},[1674,2355,1832],{"class":1820},[1674,2357,2358],{"class":1930}," template",[1674,2360,1934],{"class":1913},[1674,2362,1937],{"class":1820},[1674,2364,1940],{"class":1824},[1674,2366,1943],{"class":1820},[1674,2368,1946],{"class":1820},[1674,2370,1949],{"class":1684},[1674,2372,1952],{"class":1820},[1674,2374,1955],{"class":1820},[1674,2376,1958],{"class":1824},[1674,2378,1943],{"class":1820},[1674,2380,1964],{"class":1963},[1674,2382,1967],{"class":1820},[1674,2384,1970],{"class":1913},[1674,2386,1973],{"class":1820},[1674,2388,2389,2392,2394,2397,2400],{"class":1676,"line":1907},[1674,2390,2391],{"class":1913},"console",[1674,2393,1922],{"class":1820},[1674,2395,2396],{"class":1930},"log",[1674,2398,2399],{"class":1913},"(html)",[1674,2401,1973],{"class":1820},[1642,2403,2404],{},[1531,2405,2406,2407,2410],{},"对初学者来说，",[1535,2408,2409],{},"优先使用命令行预编译","更简单。上面的 Node.js 脚本方式适合需要把预编译集成到自动化流程中的场景。",[1540,2412],{},[1526,2414,2416],{"id":2415},"与构建工具结合","🧰 与构建工具结合",[1531,2418,2419],{},"实际项目中，Handlebars 预编译通常会交给构建工具处理：",[2421,2422,2423,2431,2438],"ul",{},[1610,2424,2425,2427,2428,1620],{},[1535,2426,364],{},"：使用 ",[1617,2429,2430],{},"handlebars-loader",[1610,2432,2433,2427,2435,1620],{},[1535,2434,732],{},[1617,2436,2437],{},"vite-plugin-handlebars",[1610,2439,2440,2427,2442,1620],{},[1535,2441,900],{},[1617,2443,2444],{},"rollup-plugin-handlebars",[1531,2446,2447,2448,2450,2451,2454],{},"这些插件会自动把 ",[1617,2449,1658],{}," 文件预编译好，你只需正常 ",[1617,2452,2453],{},"import"," 使用。",[1642,2456,2457],{},[1531,2458,2459],{},"本课程只讲解预编译的核心概念和手动用法。具体项目里，优先使用构建工具插件来自动化这个过程。",[1540,2461],{},[1526,2463,2465],{"id":2464},"小节总结","🧾 小节总结",[2421,2467,2468,2471,2474,2482],{},[1610,2469,2470],{},"Handlebars 完整版包含编译和渲染，运行时版只包含渲染。",[1610,2472,2473],{},"预编译可以在构建阶段完成，浏览器只需要加载运行时版，性能更好。",[1610,2475,2476,2477,2479,2480,1659],{},"使用命令行 ",[1617,2478,2109],{}," 可以把 ",[1617,2481,1658],{},[1610,2483,2484,2485,2488],{},"浏览器端通过 ",[1617,2486,2487],{},"Handlebars.templates.模板名"," 调用预编译模板。",[1540,2490],{},[1526,2492,2494],{"id":2493},"知识问答","❓ 知识问答",[1531,2496,2497],{},[1535,2498,2499],{},"Q1：预编译后的模板还能修改吗？",[1531,2501,2502,2503,2505],{},"A：不能。预编译结果是编译好的函数，模板内容需要在源 ",[1617,2504,1658],{}," 文件里修改后重新预编译。",[1531,2507,2508],{},[1535,2509,2510],{},"Q2：开发环境也需要预编译吗？",[1531,2512,2513],{},"A：可以预编译，也可以直接用完整版实时编译。开发环境更注重方便调试，生产环境建议预编译。",[1531,2515,2516],{},[1535,2517,2518],{},"Q3：浏览器端加载了完整版 Handlebars，还能用预编译模板吗？",[1531,2520,2521],{},"A：可以，但没必要。完整版体积更大，会浪费流量和加载时间。",[1531,2523,2524],{},[1535,2525,2526],{},"Q4：Handlebars 预编译和 Vue/React 的编译有什么区别？",[1531,2528,2529],{},"A：Handlebars 预编译是把模板字符串变成渲染函数；Vue/React 的编译会更进一步，生成针对各自框架运行时的渲染代码。思想上类似，但产物不同。",[1540,2531],{},[1526,2533,2535],{"id":2534},"小练习","🧪 小练习",[1531,2537,2538],{},"请完成以下步骤：",[1607,2540,2541],{},[1610,2542,2543,2544,2547],{},"创建一个 ",[1617,2545,2546],{},"src/templates/card.hbs"," 文件，内容如下：",[1665,2549,2551],{"className":1803,"code":2550,"filename":2546,"language":1806,"meta":1670,"style":1670},"\u003Cdiv class=\"card\">\n    \u003Ch3>{{title}}\u003C/h3>\n    \u003Cp>{{desc}}\u003C/p>\n\u003C/div>\n",[1617,2552,2553,2574,2593,2610],{"__ignoreMap":1670},[1674,2554,2555,2557,2560,2563,2565,2567,2570,2572],{"class":1676,"line":1677},[1674,2556,1821],{"class":1820},[1674,2558,2559],{"class":1824},"div",[1674,2561,2562],{"class":1828}," class",[1674,2564,1832],{"class":1820},[1674,2566,1835],{"class":1820},[1674,2568,2569],{"class":1684},"card",[1674,2571,1835],{"class":1820},[1674,2573,1848],{"class":1820},[1674,2575,2576,2579,2581,2584,2587,2589,2591],{"class":1676,"line":1817},[1674,2577,2578],{"class":1820},"    \u003C",[1674,2580,1661],{"class":1824},[1674,2582,2583],{"class":1820},">",[1674,2585,2586],{"class":1913},"{{title}}",[1674,2588,2013],{"class":1820},[1674,2590,1661],{"class":1824},[1674,2592,1848],{"class":1820},[1674,2594,2595,2597,2599,2601,2604,2606,2608],{"class":1676,"line":1851},[1674,2596,2578],{"class":1820},[1674,2598,1531],{"class":1824},[1674,2600,2583],{"class":1820},[1674,2602,2603],{"class":1913},"{{desc}}",[1674,2605,2013],{"class":1820},[1674,2607,1531],{"class":1824},[1674,2609,1848],{"class":1820},[1674,2611,2612,2614,2616],{"class":1676,"line":1858},[1674,2613,2013],{"class":1820},[1674,2615,2559],{"class":1824},[1674,2617,1848],{"class":1820},[1607,2619,2620],{"start":1817},[1610,2621,2622],{},"执行预编译命令：",[1665,2624,2626],{"className":1667,"code":2625,"language":1669,"meta":1670,"style":1670},"# 请在这里输入预编译命令\n",[1617,2627,2628],{"__ignoreMap":1670},[1674,2629,2630],{"class":1676,"line":1677},[1674,2631,2625],{"class":1813},[1607,2633,2634],{"start":1851},[1610,2635,2636,2637,2639],{},"编写 ",[1617,2638,1805],{},"，在浏览器中使用运行时版加载并渲染该模板。",[1540,2641],{},[1531,2643,2644],{},"🎉 恭喜你完成了 Handlebars 课程的学习！你已经掌握了从基础语法、内置函数、模板复用、自定义 Helper 到预编译的完整知识体系，可以在项目中灵活使用 Handlebars 了。",[2646,2647,2648],"style",{},"html pre.shiki code .sYGMc, html code.shiki .sYGMc{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sIEYB, html code.shiki .sIEYB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: 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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。",{"title":870,"path":871,"stem":872,"description":2676,"children":-1},"了解 Plop 代码生成器的基本概念与适用场景，学会安装并运行第一个文件生成任务。",1784715111306]