{"id":5096,"date":"2023-01-05T11:55:21","date_gmt":"2023-01-05T03:55:21","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5096"},"modified":"2023-01-05T11:55:21","modified_gmt":"2023-01-05T03:55:21","slug":"%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescript%e4%b8%ad%e7%9a%84%e6%95%b8%e7%b5%84%e9%81%8e%e6%bf%be%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescript%e4%b8%ad%e7%9a%84%e6%95%b8%e7%b5%84%e9%81%8e%e6%bf%be%e5%8a%9f%e8%83%bd\/","title":{"rendered":"\u4e86\u89e3\u5982\u4f55\u4f7f\u7528TypeScript\u4e2d\u7684\u6578\u7d44\u904e\u6ffe\u529f\u80fd"},"content":{"rendered":"

<\/p>\n

TypeScript \u6578\u7d44\u7684\u904e\u6ffe(Array Filtering)<\/h1>\n

TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u64c1\u6709\u66f4\u591a\u7684\u529f\u80fd\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u6578\u7d44\u7684\u904e\u6ffe\uff08Array Filtering\uff09\u3002\u6578\u7d44\u7684\u904e\u6ffe\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5b83\u53ef\u4ee5\u8b93\u6211\u5011\u5f9e\u4e00\u500b\u6578\u7d44\u4e2d\u7be9\u9078\u51fa\u6eff\u8db3\u67d0\u4e9b\u689d\u4ef6\u7684\u5143\u7d20\uff0c\u4ee5\u4e0b\u5c07\u4ecb\u7d39 TypeScript \u4e2d\u7684\u6578\u7d44\u7684\u904e\u6ffe\u65b9\u6cd5\u3002<\/p>\n

\u4f7f\u7528 Array.filter()<\/h2>\n

Array.filter() \u662f TypeScript \u4e2d\u6700\u5e38\u7528\u7684\u6578\u7d44\u904e\u6ffe\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u63a5\u53d7\u4e00\u500b\u51fd\u6578\u4f5c\u70ba\u53c3\u6578\uff0c\u51fd\u6578\u7684\u53c3\u6578\u662f\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\uff0c\u51fd\u6578\u7684\u8fd4\u56de\u503c\u662f\u4e00\u500b\u5e03\u723e\u503c\uff0c\u5982\u679c\u8fd4\u56de\u503c\u70ba true\uff0c\u5247\u8a72\u5143\u7d20\u6703\u88ab\u4fdd\u7559\uff0c\u53cd\u4e4b\u5247\u6703\u88ab\u7be9\u6389\u3002<\/p>\n

<\/p>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u6211\u5011\u5c07\u5f9e\u4e00\u500b\u6578\u7d44\u4e2d\u7be9\u9078\u51fa\u5927\u65bc 10 \u7684\u5143\u7d20\uff1a<\/p>\n

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];\n\nlet result = numbers.filter(function(num) {\n  return num > 10;\n});\n\nconsole.log(result); \/\/ [11, 12]\n<\/code><\/pre>\n
\u4f7f\u7528 Array.map()<\/h2>\n
Array.map() \u662f\u53e6\u4e00\u7a2e\u5e38\u7528\u7684\u6578\u7d44\u904e\u6ffe\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\u57f7\u884c\u4e00\u500b\u51fd\u6578\uff0c\u51fd\u6578\u7684\u53c3\u6578\u662f\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\uff0c\u51fd\u6578\u7684\u8fd4\u56de\u503c\u6703\u88ab\u653e\u5165\u4e00\u500b\u65b0\u7684\u6578\u7d44\u4e2d\uff0c\u6700\u5f8c\u8fd4\u56de\u65b0\u7684\u6578\u7d44\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u6211\u5011\u5c07\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\u57f7\u884c\u4e00\u500b\u51fd\u6578\uff0c\u5c07\u5143\u7d20\u7684\u503c\u52a0\u4e0a 10\uff1a<\/p>\n
let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\n\nlet result = numbers.map(function(num) {\n  return num + 10;\n});\n\nconsole.log(result); \/\/ [11, 12, 13, 14, 15, 16, 17, 18, 19, 20]\n<\/code><\/pre>\n
\u4f7f\u7528 Array.reduce()<\/h2>\n
Array.reduce() \u662f\u53e6\u4e00\u7a2e\u5e38\u7528\u7684\u6578\u7d44\u904e\u6ffe\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\u57f7\u884c\u4e00\u500b\u51fd\u6578\uff0c\u51fd\u6578\u7684\u53c3\u6578\u662f\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\u548c\u4e00\u500b\u7d2f\u52a0\u5668\uff0c\u51fd\u6578\u7684\u8fd4\u56de\u503c\u6703\u88ab\u653e\u5165\u7d2f\u52a0\u5668\u4e2d\uff0c\u6700\u5f8c\u8fd4\u56de\u7d2f\u52a0\u5668\u7684\u503c\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u6211\u5011\u5c07\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\u57f7\u884c\u4e00\u500b\u51fd\u6578\uff0c\u5c07\u5143\u7d20\u7684\u503c\u52a0\u7e3d\uff1a<\/p>\n
let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\n\nlet result = numbers.reduce(function(acc, num) {\n  return acc + num;\n}, 0);\n\nconsole.log(result); \/\/ 55\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
TypeScript \u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u7d44\u904e\u6ffe\u7684\u65b9\u6cd5\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u662f Array.filter()\u3001Array.map() \u548c Array.reduce()\uff0c\u5b83\u5011\u53ef\u4ee5\u8b93\u6211\u5011\u5f9e\u4e00\u500b\u6578\u7d44\u4e2d\u7be9\u9078\u51fa\u6eff\u8db3\u67d0\u4e9b\u689d\u4ef6\u7684\u5143\u7d20\uff0c\u6216\u8005\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u4e00\u500b\u5143\u7d20\u57f7\u884c\u4e00\u500b\u51fd\u6578\uff0c\u4ee5\u6b64\u4f86\u9054\u5230\u6211\u5011\u60f3\u8981\u7684\u7d50\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6458\u8981:\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScript\u4e2d\u7684\u6578\u7d44\u904e\u6ffe\u529f\u80fd\uff0c\u53ef\u4ee5\u8b93\u4f60\u66f4\u6709\u6548\u7387\u5730\u8655\u7406\u8cc7\u6599\uff0c\u4e26\u66f4\u5bb9\u6613\u5730\u627e\u5230\u4f60\u60f3\u8981\u7684\u7d50\u679c\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScript\u4e2d\u7684\u6578\u7d44\u904e\u6ffe\u529f\u80fd\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u8655\u7406\u8cc7\u6599\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[187],"tags":[186],"class_list":["post-5096","post","type-post","status-publish","format-standard","hentry","category-typescript","tag-typescript"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1kc","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5096","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=5096"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5096\/revisions"}],"predecessor-version":[{"id":5097,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5096\/revisions\/5097"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}