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<\/p>\n

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TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u652f\u6301\u985e\u578b\u6aa2\u67e5\u548c\u975c\u614b\u5206\u6790\uff0c\u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u958b\u767c\u5927\u578b JavaScript \u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n

\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Array.prototype.map()<\/code> \u65b9\u6cd5\u4f86\u6c42\u53d6\u591a\u9805\u5f0f\u56de\u6b78\u4fc2\u6578\u3002\u8a72\u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u51fd\u6578\u4f5c\u70ba\u53c3\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u65b0\u7684\u6578\u7d44\uff0c\u5176\u4e2d\u5305\u542b\u6bcf\u500b\u5143\u7d20\u7684\u591a\u9805\u5f0f\u56de\u6b78\u4fc2\u6578\u3002<\/p>\n

<\/p>\n

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\n\/\/ \u5b9a\u7fa9\u8f38\u5165\u8b8a\u91cf\nlet x = [1, 2, 3, 4, 5];\n\n\/\/ \u5b9a\u7fa9\u591a\u9805\u5f0f\u56de\u6b78\u51fd\u6578\nlet polyReg = (x: number) => {\n  return x * x + 2 * x + 1;\n};\n\n\/\/ \u4f7f\u7528 map() \u65b9\u6cd5\u6c42\u53d6\u591a\u9805\u5f0f\u56de\u6b78\u4fc2\u6578\nlet coefficients = x.map(polyReg);\n\n\/\/ \u8f38\u51fa\u7d50\u679c\nconsole.log(coefficients); \/\/ [4, 9, 16, 25, 36]\n<\/pre>\n
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\u7e3d\u7d50<\/h2>\n
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