{"id":4804,"date":"2023-01-05T10:25:22","date_gmt":"2023-01-05T02:25:22","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4804"},"modified":"2023-01-05T10:25:22","modified_gmt":"2023-01-05T02:25:22","slug":"%e4%ba%86%e8%a7%a3typescript%e9%87%8d%e8%bc%89%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5%e8%88%87%e6%87%89%e7%94%a8","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e9%87%8d%e8%bc%89%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5%e8%88%87%e6%87%89%e7%94%a8\/","title":{"rendered":"\u4e86\u89e3TypeScript\u91cd\u8f09\u7684\u57fa\u672c\u6982\u5ff5\u8207\u61c9\u7528"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u91cd\u8f09, overload\"><\/p>\n<h1>TypeScript \u91cd\u8f09(overload) \u4ecb\u7d39<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u985e\u578b\u7cfb\u7d71\u548c ES6 \u7684\u7279\u6027\uff0c\u4f7f\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u8f15\u9b06\u5730\u958b\u767c\u51fa\u66f4\u5065\u58ef\u7684\u7a0b\u5f0f\u78bc\u3002\u5176\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u7279\u6027\u5c31\u662f TypeScript \u91cd\u8f09(overload)\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u540c\u4e00\u500b\u51fd\u5f0f\u4e2d\u5b9a\u7fa9\u591a\u500b\u4e0d\u540c\u7684\u53c3\u6578\u548c\u56de\u50b3\u503c\uff0c\u8b93\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\u6613\u8b80\u3002<\/p>\n<p><!--more--><\/p>\n<h2>TypeScript \u91cd\u8f09\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>TypeScript \u91cd\u8f09(overload)\u662f\u4e00\u7a2e\u51fd\u5f0f\u5b9a\u7fa9\u7684\u6280\u8853\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u540c\u4e00\u500b\u51fd\u5f0f\u4e2d\u5b9a\u7fa9\u591a\u500b\u4e0d\u540c\u7684\u53c3\u6578\u548c\u56de\u50b3\u503c\uff0c\u8b93\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\u6613\u8b80\u3002<\/p>\n<p>\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u51fd\u5f0f\u53eb\u505a <span style=\"color: #009900; font-weight: bold;\">add()<\/span>\uff0c\u5b83\u53ef\u4ee5\u63a5\u53d7\u5169\u500b\u53c3\u6578\uff0c\u4e26\u4e14\u56de\u50b3\u5169\u500b\u53c3\u6578\u7684\u548c\uff1a<\/p>\n<pre class=\"brush: javascript\">\nfunction add(a: number, b: number): number {\n    return a + b;\n}\n<\/pre>\n<p>\u4f46\u662f\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u8b93 <span style=\"color: #009900; font-weight: bold;\">add()<\/span> \u51fd\u5f0f\u53ef\u4ee5\u63a5\u53d7\u4e0d\u540c\u985e\u578b\u7684\u53c3\u6578\uff0c\u4f8b\u5982\u5b57\u4e32\u3001\u6578\u5b57\u3001\u5e03\u6797\u503c\u7b49\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 TypeScript \u91cd\u8f09(overload)\u4f86\u5b9a\u7fa9\u591a\u500b\u4e0d\u540c\u7684\u51fd\u5f0f\u7c3d\u540d\uff1a<\/p>\n<pre class=\"brush: javascript\">\nfunction add(a: string, b: string): string;\nfunction add(a: number, b: number): number;\nfunction add(a: boolean, b: boolean): boolean;\n\nfunction add(a: any, b: any): any {\n    return a + b;\n}\n<\/pre>\n<p>\u9019\u6a23\u4e00\u4f86\uff0c\u7576\u6211\u5011\u547c\u53eb <span style=\"color: #009900; font-weight: bold;\">add()<\/span> \u51fd\u5f0f\u6642\uff0cTypeScript \u6703\u6839\u64da\u6211\u5011\u50b3\u5165\u7684\u53c3\u6578\u985e\u578b\u4f86\u6c7a\u5b9a\u8981\u4f7f\u7528\u54ea\u500b\u51fd\u5f0f\u7c3d\u540d\uff1a<\/p>\n<pre class=\"brush: javascript\">\nadd('Hello', 'World'); \/\/ \u56de\u50b3 'HelloWorld'\nadd(1, 2); \/\/ \u56de\u50b3 3\nadd(true, false); \/\/ \u56de\u50b3 false\n<\/pre>\n<h2>TypeScript \u91cd\u8f09\u7684\u512a\u9ede<\/h2>\n<p>TypeScript \u91cd\u8f09(overload)\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u540c\u4e00\u500b\u51fd\u5f0f\u4e2d\u5b9a\u7fa9\u591a\u500b\u4e0d\u540c\u7684\u53c3\u6578\u548c\u56de\u50b3\u503c\uff0c\u8b93\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\u6613\u8b80\uff0c\u4e26\u4e14\u53ef\u4ee5\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u3002<\/p>\n<p>\u6b64\u5916\uff0cTypeScript \u91cd\u8f09(overload)\u9084\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u64b0\u5beb\u51fa\u66f4\u5065\u58ef\u7684\u7a0b\u5f0f\u78bc\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u5b9a\u7fa9\u51fd\u5f0f\u6642\u5c31\u53ef\u4ee5\u6aa2\u67e5\u53c3\u6578\u7684\u985e\u578b\uff0c\u4ee5\u78ba\u4fdd\u7a0b\u5f0f\u78bc\u7684\u6b63\u78ba\u6027\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>TypeScript \u91cd\u8f09(overload)\u662f\u4e00\u7a2e\u51fd\u5f0f\u5b9a\u7fa9\u7684\u6280\u8853\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u540c\u4e00\u500b\u51fd\u5f0f\u4e2d\u5b9a\u7fa9\u591a\u500b\u4e0d\u540c\u7684\u53c3\u6578\u548c\u56de\u50b3\u503c\uff0c\u8b93\u7a0b\u5f0f\u78bc\u66f4\u52a0\u7c21\u6f54\u6613\u8b80\uff0c\u4e26\u4e14\u53ef\u4ee5\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u3002\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u64b0\u5beb\u51fa\u66f4\u5065\u58ef\u7684\u7a0b\u5f0f\u78bc\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u5b9a\u7fa9\u51fd\u5f0f\u6642\u5c31\u53ef\u4ee5\u6aa2\u67e5\u53c3\u6578\u7684\u985e\u578b\uff0c\u4ee5\u78ba\u4fdd\u7a0b\u5f0f\u78bc\u7684\u6b63\u78ba\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981:TypeScript\u91cd\u8f09\u662f\u4e00\u7a2e\u6280\u8853\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u540c\u4e00\u500b\u51fd\u6578\u4e2d\u5b9a\u7fa9\u4e0d\u540c\u7684\u53c3\u6578\u548c\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u4ecb\u7d39TypeScript\u91cd\u8f09\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u958b\u767c\u4e2d\u61c9\u7528\u5b83\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-4804","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\/pcFK27-1fu","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4804","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=4804"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4804\/revisions"}],"predecessor-version":[{"id":4805,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4804\/revisions\/4805"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}