{"id":5146,"date":"2023-01-05T12:03:21","date_gmt":"2023-01-05T04:03:21","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5146"},"modified":"2023-01-05T12:03:21","modified_gmt":"2023-01-05T04:03:21","slug":"%e4%ba%86%e8%a7%a3typescript%e5%87%bd%e6%95%b8%e7%9a%84%e9%bb%98%e8%aa%8d%e5%8f%83%e6%95%b8%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e5%87%bd%e6%95%b8%e7%9a%84%e9%bb%98%e8%aa%8d%e5%8f%83%e6%95%b8%e5%8a%9f%e8%83%bd\/","title":{"rendered":"\u4e86\u89e3TypeScript\u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u529f\u80fd"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Functions, Default Parameters\"><\/p>\n<h1>\u4f7f\u7528 TypeScript \u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u529f\u80fd\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u3002\u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u5b9a\u7fa9\u51fd\u6578\u6642\u6307\u5b9a\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\uff0c\u4ee5\u4fbf\u5728\u8abf\u7528\u51fd\u6578\u6642\u53ef\u4ee5\u7701\u7565\u53c3\u6578\u3002<\/p>\n<h2>TypeScript \u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>TypeScript \u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u7684\u57fa\u672c\u7528\u6cd5\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u5728\u5b9a\u7fa9\u51fd\u6578\u6642\u5c07\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u6307\u5b9a\u70ba\u4e00\u500b\u5e38\u91cf\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u5b9a\u7fa9\u4e00\u500b\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u8a72\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u70ba 0\uff1a<\/p>\n<pre class=\"brush: typescript\">\nfunction add(x: number, y: number = 0): number {\n    return x + y;\n}\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba add \u7684\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u5169\u500b\u53c3\u6578\uff0c\u7b2c\u4e8c\u500b\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u70ba 0\u3002\u56e0\u6b64\uff0c\u6211\u5011\u53ef\u4ee5\u8abf\u7528\u8a72\u51fd\u6578\uff0c\u53ea\u50b3\u905e\u4e00\u500b\u53c3\u6578\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet result = add(10);\nconsole.log(result); \/\/ 10\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u53ea\u50b3\u905e\u4e86\u4e00\u500b\u53c3\u6578 10\uff0c\u7531\u65bc\u7b2c\u4e8c\u500b\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u70ba 0\uff0c\u56e0\u6b64\u51fd\u6578\u6703\u5c07 10 \u52a0\u4e0a 0\uff0c\u5f97\u5230\u7d50\u679c 10\u3002<\/p>\n<h2>TypeScript \u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u7684\u66f4\u591a\u7528\u6cd5<\/h2>\n<p>TypeScript \u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u4e0d\u50c5\u50c5\u53ef\u4ee5\u6307\u5b9a\u70ba\u5e38\u91cf\uff0c\u9084\u53ef\u4ee5\u6307\u5b9a\u70ba\u4e00\u500b\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u53ef\u4ee5\u6839\u64da\u53c3\u6578\u7684\u503c\u4f86\u8a08\u7b97\u51fa\u9ed8\u8a8d\u503c\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u5b9a\u7fa9\u4e00\u500b\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u8a72\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u70ba\u4e00\u500b\u51fd\u6578\uff1a<\/p>\n<pre class=\"brush: typescript\">\nfunction add(x: number, y: number = getDefaultValue()): number {\n    return x + y;\n}\n\nfunction getDefaultValue(): number {\n    return 0;\n}\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba add \u7684\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u63a5\u53d7\u5169\u500b\u53c3\u6578\uff0c\u7b2c\u4e8c\u500b\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u70ba\u4e00\u500b\u51fd\u6578 getDefaultValue\uff0c\u8a72\u51fd\u6578\u6703\u8fd4\u56de 0\u3002\u56e0\u6b64\uff0c\u6211\u5011\u53ef\u4ee5\u8abf\u7528\u8a72\u51fd\u6578\uff0c\u53ea\u50b3\u905e\u4e00\u500b\u53c3\u6578\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet result = add(10);\nconsole.log(result); \/\/ 10\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u53ea\u50b3\u905e\u4e86\u4e00\u500b\u53c3\u6578 10\uff0c\u7531\u65bc\u7b2c\u4e8c\u500b\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u70ba\u4e00\u500b\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u6703\u8fd4\u56de 0\uff0c\u56e0\u6b64\u51fd\u6578\u6703\u5c07 10 \u52a0\u4e0a 0\uff0c\u5f97\u5230\u7d50\u679c 10\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>TypeScript \u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u5b9a\u7fa9\u51fd\u6578\u6642\u6307\u5b9a\u53c3\u6578\u7684\u9ed8\u8a8d\u503c\uff0c\u4ee5\u4fbf\u5728\u8abf\u7528\u51fd\u6578\u6642\u53ef\u4ee5\u7701\u7565\u53c3\u6578\u3002TypeScript \u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u4e0d\u50c5\u50c5\u53ef\u4ee5\u6307\u5b9a\u70ba\u5e38\u91cf\uff0c\u9084\u53ef\u4ee5\u6307\u5b9a\u70ba\u4e00\u500b\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u53ef\u4ee5\u6839\u64da\u53c3\u6578\u7684\u503c\u4f86\u8a08\u7b97\u51fa\u9ed8\u8a8d\u503c\u3002<\/p>\n<p><!--more--><\/p>\n<h2>\u66f4\u591a TypeScript \u76f8\u95dc\u6587\u7ae0<\/h2>\n<ul>\n<li><a href=\"https:\/\/example.com\/typescript-tutorial\" target=\"_blank\" rel=\"noopener\">TypeScript \u6559\u7a0b<\/a><\/li>\n<li><a href=\"https:\/\/example.com\/typescript-interfaces\" target=\"_blank\" rel=\"noopener\">TypeScript \u63a5\u53e3<\/a><\/li>\n<li><a href=\"https:\/\/example.com\/typescript-classes\" target=\"_blank\" rel=\"noopener\">TypeScript \u985e<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981:TypeScript\u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u52a0\u65b9\u4fbf\u5730\u5b9a\u7fa9\u51fd\u6578\uff0c\u4e26\u63d0\u4f9b\u66f4\u591a\u7684\u5f48\u6027\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u8f15\u9b06\u5730\u63a7\u5236\u51fd\u6578\u7684\u53c3\u6578\u3002\u672c\u6587\u5c07\u4ecb\u7d39TypeScript\u51fd\u6578\u7684\u9ed8\u8a8d\u53c3\u6578\u529f\u80fd\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u63d0\u9ad8\u958b\u767c\u6548\u7387\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-5146","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\/pcFK27-1l0","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5146","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=5146"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5146\/revisions"}],"predecessor-version":[{"id":5147,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5146\/revisions\/5147"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}