{"id":4824,"date":"2023-01-05T10:36:16","date_gmt":"2023-01-05T02:36:16","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4824"},"modified":"2023-01-05T10:36:16","modified_gmt":"2023-01-05T02:36:16","slug":"%e4%ba%86%e8%a7%a3typescript%e7%a8%8b%e5%bc%8f%e8%aa%9e%e8%a8%80%e4%b8%ad%e7%9a%84typealiases%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e7%a8%8b%e5%bc%8f%e8%aa%9e%e8%a8%80%e4%b8%ad%e7%9a%84typealiases%e5%8a%9f%e8%83%bd\/","title":{"rendered":"\u4e86\u89e3TypeScript\u7a0b\u5f0f\u8a9e\u8a00\u4e2d\u7684TypeAliases\u529f\u80fd"},"content":{"rendered":"

<\/p>\n

\u4ec0\u9ebc\u662f TypeScript \u7c7b\u578b\u522b\u540d(type alias)<\/h1>\n

TypeScript \u7c7b\u578b\u522b\u540d(type alias)\u662f\u4e00\u7a2e\u628a\u4e00\u500b\u540d\u5b57\u7d81\u5b9a\u5230\u4e00\u500b\u7279\u5b9a\u7684\u985e\u578b\u4e0a\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u7a0b\u5f0f\u78bc\u4e2d\u4f7f\u7528\u8a72\u540d\u5b57\u4f86\u53c3\u8003\u8a72\u985e\u578b\u3002\u5b83\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u7406\u89e3\u7a0b\u5f0f\u78bc\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u91cd\u69cb\u7a0b\u5f0f\u78bc\u3002<\/p>\n

TypeScript \u7c7b\u578b\u522b\u540d\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n

TypeScript \u7c7b\u578b\u522b\u540d\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

type <aliasName> = <type>;\n<\/code><\/pre>\n
\u5176\u4e2d\uff0c<aliasName><\/code>\u662f\u4f60\u60f3\u8981\u70ba\u8a72\u985e\u578b\u5b9a\u7fa9\u7684\u5225\u540d\uff0c\u800c<type><\/code>\u5247\u662f\u4f60\u60f3\u8981\u7d81\u5b9a\u5230\u8a72\u5225\u540d\u7684\u985e\u578b\u3002<\/p>\n
\u4f7f\u7528 TypeScript \u7c7b\u578b\u522b\u540d\u7684\u7bc4\u4f8b<\/h2>\n
\u8b93\u6211\u5011\u4f86\u770b\u4e00\u500b\u4f7f\u7528 TypeScript \u7c7b\u578b\u522b\u540d\u7684\u7bc4\u4f8b\uff1a<\/p>\n
\ntype Name = string;\n\nlet myName: Name = \"John\";\n\nconsole.log(myName); \/\/ John\n<\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70baName<\/code>\u7684\u5225\u540d\uff0c\u4e26\u5c07\u5b83\u7d81\u5b9a\u5230string<\/code>\u985e\u578b\u4e0a\u3002\u7136\u5f8c\uff0c\u6211\u5011\u5ba3\u544a\u4e86\u4e00\u500b\u540d\u70bamyName<\/code>\u7684\u8b8a\u6578\uff0c\u4e26\u5c07\u5b83\u7684\u985e\u578b\u5b9a\u7fa9\u70baName<\/code>\uff0c\u4e5f\u5c31\u662fstring<\/code>\u985e\u578b\u3002\u6700\u5f8c\uff0c\u6211\u5011\u5c07myName<\/code>\u7684\u503c\u8a2d\u5b9a\u70baJohn<\/code>\uff0c\u4e26\u5c07\u5b83\u7684\u503c\u8f38\u51fa\u5230\u63a7\u5236\u53f0\u3002<\/p>\n
\u70ba\u4ec0\u9ebc\u8981\u4f7f\u7528 TypeScript \u7c7b\u578b\u522b\u540d<\/h2>\n
TypeScript \u7c7b\u578b\u522b\u540d\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u7406\u89e3\u7a0b\u5f0f\u78bc\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u91cd\u69cb\u7a0b\u5f0f\u78bc\u3002<\/p>\n
\u8209\u500b\u4f8b\u5b50\u4f86\u8aaa\uff0c\u5047\u8a2d\u4f60\u6709\u4e00\u500b\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u8a72\u53c3\u6578\u7684\u985e\u578b\u662fstring<\/code>\uff0c\u4f46\u662f\u4f60\u53ef\u80fd\u4e0d\u77e5\u9053\u8a72\u53c3\u6578\u662f\u4ec0\u9ebc\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 TypeScript \u7c7b\u578b\u5225\u540d\u4f86\u5b9a\u7fa9\u4e00\u500b\u540d\u70baName<\/code>\u7684\u5225\u540d\uff0c\u4e26\u5c07\u5b83\u7d81\u5b9a\u5230string<\/code>\u985e\u578b\u4e0a\uff0c\u9019\u6a23\u4f60\u5c31\u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u7406\u89e3\u8a72\u53c3\u6578\u662f\u4ec0\u9ebc\u4e86\u3002<\/p>\n
\u53e6\u5916\uff0cTypeScript \u7c7b\u578b\u5225\u540d\u4e5f\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u91cd\u69cb\u7a0b\u5f0f\u78bc\u3002\u5047\u8a2d\u4f60\u6709\u4e00\u500b\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u8a72\u53c3\u6578\u7684\u985e\u578b\u662fstring<\/code>\uff0c\u4f46\u662f\u4f60\u60f3\u8981\u5c07\u8a72\u53c3\u6578\u7684\u985e\u578b\u6539\u70banumber<\/code>\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 TypeScript \u7c7b\u578b\u5225\u540d\u4f86\u5b9a\u7fa9\u4e00\u500b\u540d\u70baName<\/code>\u7684\u5225\u540d\uff0c\u4e26\u5c07\u5b83\u7d81\u5b9a\u5230number<\/code>\u985e\u578b\u4e0a\uff0c\u9019\u6a23\u4f60\u5c31\u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u91cd\u69cb\u7a0b\u5f0f\u78bc\u4e86\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
TypeScript \u7c7b\u578b\u5225\u540d(type alias)\u662f\u4e00\u7a2e\u628a\u4e00\u500b\u540d\u5b57\u7d81\u5b9a\u5230\u4e00\u500b\u7279\u5b9a\u7684\u985e\u578b\u4e0a\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u7a0b\u5f0f\u78bc\u4e2d\u4f7f\u7528\u8a72\u540d\u5b57\u4f86\u53c3\u8003\u8a72\u985e\u578b\u3002\u5b83\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u7406\u89e3\u7a0b\u5f0f\u78bc\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u91cd\u69cb\u7a0b\u5f0f\u78bc\u3002TypeScript \u7c7b\u578b\u5225\u540d\u7684\u57fa\u672c\u8a9e\u6cd5\u662ftype <aliasName> = <type>;<\/code>\uff0c\u5176\u4e2d<aliasName><\/code>\u662f\u4f60\u60f3\u8981\u70ba\u8a72\u985e\u578b\u5b9a\u7fa9\u7684\u5225\u540d\uff0c\u800c<type><\/code>\u5247\u662f\u4f60\u60f3\u8981\u7d81\u5b9a\u5230\u8a72\u5225\u540d\u7684\u985e\u578b\u3002<\/p>\n
<\/p>\n
TypeScript \u7c7b\u578b\u5225\u540d\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u7406\u89e3\u7a0b\u5f0f\u78bc\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u91cd\u69cb\u7a0b\u5f0f\u78bc\u3002\u5b83\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u7ba1\u7406\u7a0b\u5f0f\u78bc\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u4f60\u66f4\u5bb9\u6613\u5730\u64b0\u5beb\u51fa\u66f4\u512a\u8cea\u7684\u7a0b\u5f0f\u78bc\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6458\u8981:TypeScript\u7a0b\u5f0f\u8a9e\u8a00\u4e2d\u7684TypeAliases\u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u6709\u6548\u7387\u7684\u5b9a\u7fa9\u548c\u4f7f\u7528\u8907\u96dc\u7684\u8cc7\u6599\u578b\u5225\uff0c\u672c\u6587\u5c07\u4ecb\u7d39TypeAliases\u7684\u57fa\u672c\u6982\u5ff5\u548c\u4f7f\u7528\u65b9\u6cd5\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u66f4\u5feb\u901f\u7684\u958b\u767c\u51fa\u66f4\u512a\u8cea\u7684\u7a0b\u5f0f\u78bc\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-4824","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\/pcFK27-1fO","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4824","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=4824"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4824\/revisions"}],"predecessor-version":[{"id":4825,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4824\/revisions\/4825"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}