{"id":4820,"date":"2023-01-05T10:34:01","date_gmt":"2023-01-05T02:34:01","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4820"},"modified":"2023-01-05T10:34:01","modified_gmt":"2023-01-05T02:34:01","slug":"%e4%ba%86%e8%a7%a3typescript%e4%b8%ad%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%e4%b8%ad%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\u4e2d\u7684\u9ed8\u8a8d\u53c3\u6578\u529f\u80fd"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, default parameter\"><\/p>\n<h1>TypeScript \u9ed8\u8ba4\u53c3\u6578(default parameter)<\/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\u652f\u6301\u9ed8\u8a8d\u53c3\u6578(default parameter)\u3002\u9ed8\u8a8d\u53c3\u6578\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u5b9a\u7fa9\u51fd\u6578\u6642\uff0c\u70ba\u53c3\u6578\u6307\u5b9a\u9ed8\u8a8d\u503c\uff0c\u7576\u51fd\u6578\u88ab\u8abf\u7528\u6642\uff0c\u5982\u679c\u6c92\u6709\u6307\u5b9a\u53c3\u6578\u503c\uff0c\u5c31\u6703\u4f7f\u7528\u9ed8\u8a8d\u503c\u3002<\/p>\n<p><!--more--><\/p>\n<p>TypeScript \u9ed8\u8a8d\u53c3\u6578\u7684\u8a9e\u6cd5\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u5728\u53c3\u6578\u540d\u7a31\u5f8c\u9762\u52a0\u4e0a\u4e00\u500b\u7b49\u865f\uff0c\u7136\u5f8c\u6307\u5b9a\u9ed8\u8a8d\u503c\u5373\u53ef\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: typescript\">\nfunction greet(name: string = 'John') {\n    console.log(`Hello, ${name}`);\n}\n<\/pre>\n<p>\u4e0a\u9762\u7684\u51fd\u6578\u5b9a\u7fa9\u4e2d\uff0cname \u53c3\u6578\u6709\u4e00\u500b\u9ed8\u8a8d\u503c &#8216;John&#8217;\uff0c\u5982\u679c\u8abf\u7528\u51fd\u6578\u6642\u6c92\u6709\u6307\u5b9a name \u53c3\u6578\uff0c\u5c31\u6703\u4f7f\u7528\u9ed8\u8a8d\u503c &#8216;John&#8217;\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: typescript\">\ngreet(); \/\/ Hello, John\n<\/pre>\n<p>\u5982\u679c\u8abf\u7528\u51fd\u6578\u6642\u6307\u5b9a\u4e86 name \u53c3\u6578\uff0c\u5c31\u6703\u4f7f\u7528\u6307\u5b9a\u7684\u503c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: typescript\">\ngreet('Tom'); \/\/ Hello, Tom\n<\/pre>\n<p>TypeScript \u9ed8\u8a8d\u53c3\u6578\u7684\u53e6\u4e00\u500b\u512a\u9ede\u662f\uff0c\u53ef\u4ee5\u4f7f\u7528\u524d\u9762\u5b9a\u7fa9\u7684\u53c3\u6578\u4f5c\u70ba\u9ed8\u8a8d\u503c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: typescript\">\nfunction greet(name: string, message: string = `Hello, ${name}`) {\n    console.log(message);\n}\n<\/pre>\n<p>\u4e0a\u9762\u7684\u51fd\u6578\u5b9a\u7fa9\u4e2d\uff0cmessage \u53c3\u6578\u7684\u9ed8\u8a8d\u503c\u662f <code>Hello, ${name}<\/code>\uff0c\u9019\u500b\u9ed8\u8a8d\u503c\u4f7f\u7528\u4e86\u524d\u9762\u5b9a\u7fa9\u7684 name \u53c3\u6578\uff0c\u5982\u679c\u8abf\u7528\u51fd\u6578\u6642\u6c92\u6709\u6307\u5b9a message \u53c3\u6578\uff0c\u5c31\u6703\u4f7f\u7528\u9ed8\u8a8d\u503c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: typescript\">\ngreet('Tom'); \/\/ Hello, Tom\n<\/pre>\n<p>TypeScript \u9ed8\u8a8d\u53c3\u6578\u7684\u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u65b9\u4fbf\u5730\u5b9a\u7fa9\u51fd\u6578\uff0c\u53ef\u4ee5\u6e1b\u5c11\u91cd\u8907\u7684\u4ee3\u78bc\uff0c\u63d0\u9ad8\u958b\u767c\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3TypeScript\u4e2d\u7684\u9ed8\u8a8d\u53c3\u6578\u529f\u80fd\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u52a0\u65b9\u4fbf\u5730\u5b9a\u7fa9\u51fd\u6578\u53c3\u6578\uff0c\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\uff0c\u63d0\u9ad8\u958b\u767c\u6548\u7387\u3002\u672c\u6587\u5c07\u4ecb\u7d39TypeScript\u4e2d\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-4820","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\/pcFK27-1fK","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4820","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=4820"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4820\/revisions"}],"predecessor-version":[{"id":4821,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4820\/revisions\/4821"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}