{"id":5500,"date":"2023-01-05T12:49:07","date_gmt":"2023-01-05T04:49:07","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5500"},"modified":"2023-01-05T12:49:07","modified_gmt":"2023-01-05T04:49:07","slug":"%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e4%b8%ad%e7%9a%84getkey%e6%96%b9%e6%b3%95","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%a8typescriptmap%e4%b8%ad%e7%9a%84getkey%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u4e86\u89e3\u5982\u4f55\u4f7f\u7528TypeScriptMap\u4e2d\u7684getKey\u65b9\u6cd5"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Map, getKey\"><\/p>\n<h1>\u4f7f\u7528 TypeScript Map \u8fd4\u56de Map \u5bf9\u8c61\u4e2d\u6307\u5b9a\u952e\u7684\u952e\u540d(getKey)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7279\u6027\uff0c\u4f8b\u5982\u985e\u578b\u6aa2\u67e5\u548c\u975c\u614b\u5206\u6790\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u958b\u767c\u51fa\u5065\u58ef\u7684\u7a0b\u5f0f\u78bc\u3002TypeScript \u4e5f\u63d0\u4f9b\u4e86\u4e00\u4e9b\u65b0\u7684\u6578\u64da\u7d50\u69cb\uff0c\u4f8b\u5982 Map\uff0c\u5b83\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 TypeScript Map \u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6307\u5b9a\u9375\u7684\u9375\u540d\uff08getKey\uff09\u3002<\/p>\n<h2>\u4ec0\u9ebc\u662f TypeScript Map\uff1f<\/h2>\n<p>TypeScript Map \u662f\u4e00\u7a2e\u65b0\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u5b83\u7684\u57fa\u672c\u539f\u7406\u662f\u5c07\u9375\u8207\u503c\u5c0d\u61c9\uff0c\u53ef\u4ee5\u5c07\u4efb\u4f55\u985e\u578b\u7684\u503c\u8207\u4efb\u4f55\u985e\u578b\u7684\u9375\u5c0d\u61c9\u3002\u5b83\u7684\u512a\u9ede\u662f\u53ef\u4ee5\u5feb\u901f\u67e5\u627e\u548c\u66f4\u65b0\u6578\u64da\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002<\/p>\n<h2>\u5982\u4f55\u4f7f\u7528 TypeScript Map \u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6307\u5b9a\u9375\u7684\u9375\u540d\uff08getKey\uff09\uff1f<\/h2>\n<p>\u4f7f\u7528 TypeScript Map \u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6307\u5b9a\u9375\u7684\u9375\u540d\uff08getKey\uff09\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u4f7f\u7528 Map \u7684 getKey \u65b9\u6cd5\u5373\u53ef\u3002\u793a\u4f8b\u4ee3\u78bc\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: javascript\">\nlet myMap = new Map();\nmyMap.set('name', 'John');\nmyMap.set('age', 25);\n\nlet name = myMap.getKey('name');\nconsole.log(name); \/\/ 'name'\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u65b0\u7684 Map \u5c0d\u8c61\uff0c\u4e26\u4f7f\u7528 set \u65b9\u6cd5\u5c07\u9375\u548c\u503c\u5c0d\u61c9\u8d77\u4f86\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 getKey \u65b9\u6cd5\u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6307\u5b9a\u9375\u7684\u9375\u540d\uff0c\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u8fd4\u56de\u4e86 &#8216;name&#8217; \u9375\u7684\u9375\u540d\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 TypeScript Map \u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6307\u5b9a\u9375\u7684\u9375\u540d\uff08getKey\uff09\u3002TypeScript Map \u662f\u4e00\u7a2e\u65b0\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u4f7f\u7528 TypeScript Map \u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6307\u5b9a\u9375\u7684\u9375\u540d\uff08getKey\uff09\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u4f7f\u7528 Map \u7684 getKey \u65b9\u6cd5\u5373\u53ef\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u5982\u679c\u60a8\u60f3\u8981\u66f4\u6df1\u5165\u5730\u4e86\u89e3 TypeScript Map\uff0c\u8acb\u53c3\u95b1 <a href=\"https:\/\/www.typescriptlang.org\/docs\/handbook\/advanced-types.html\" target=\"_blank\" rel=\"noopener\">TypeScript \u624b\u518a<\/a> \u4e2d\u7684\u76f8\u95dc\u5167\u5bb9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528TypeScriptMap\u4e2d\u7684getKey\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8b93\u4f60\u5f9eMap\u5c0d\u8c61\u4e2d\u7372\u53d6\u6307\u5b9a\u9375\u7684\u9375\u540d\uff0c\u4ee5\u4fbf\u66f4\u6709\u6548\u5730\u64cd\u4f5cMap\u5c0d\u8c61\u4e2d\u7684\u6578\u64da\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-5500","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\/pcFK27-1qI","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5500","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=5500"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5500\/revisions"}],"predecessor-version":[{"id":5501,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5500\/revisions\/5501"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}