{"id":5538,"date":"2023-01-05T12:59:58","date_gmt":"2023-01-05T04:59:58","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5538"},"modified":"2023-01-05T12:59:58","modified_gmt":"2023-01-05T04:59:58","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e8%8e%b7%e5%8f%96map%e5%af%b9%e8%b1%a1%e7%9a%84%e7%ac%ac%e4%b8%80%e4%b8%aa%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e8%8e%b7%e5%8f%96map%e5%af%b9%e8%b1%a1%e7%9a%84%e7%ac%ac%e4%b8%80%e4%b8%aa%e5%85%83%e7%b4%a0\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScriptMap\u83b7\u53d6Map\u5bf9\u8c61\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20"},"content":{"rendered":"

<\/p>\n

TypeScript Map \u83b7\u53d6 Map \u5bf9\u8c61\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20(getFirst)<\/h1>\n

Map \u662f TypeScript \u4e2d\u7684\u4e00\u7a2e\u8cc7\u6599\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u5c07\u9375\u503c\u5c0d\u5b58\u5132\u5728\u4e00\u500b\u7269\u4ef6\u4e2d\uff0c\u4e26\u4e14\u53ef\u4ee5\u5feb\u901f\u67e5\u627e\u548c\u66f4\u65b0\u8cc7\u6599\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u8a0e\u8ad6\u5982\u4f55\u4f7f\u7528 TypeScript Map \u4f86\u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u4e5f\u5c31\u662f getFirst \u65b9\u6cd5\u3002<\/p>\n

<\/p>\n

Map \u662f\u4e00\u7a2e\u975e\u5e38\u6709\u7528\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u8b93\u6211\u5011\u5feb\u901f\u67e5\u627e\u548c\u66f4\u65b0\u8cc7\u6599\u3002\u5728 TypeScript \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 Map \u4f86\u5132\u5b58\u9375\u503c\u5c0d\uff0c\u4e26\u4e14\u53ef\u4ee5\u4f7f\u7528 getFirst \u65b9\u6cd5\u4f86\u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\u3002<\/p>\n

\u4f7f\u7528 TypeScript Map \u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20<\/h2>\n

\u8981\u4f7f\u7528 TypeScript Map \u4f86\u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u6211\u5011\u9700\u8981\u5148\u5275\u5efa\u4e00\u500b Map \u5c0d\u8c61\uff0c\u7136\u5f8c\u4f7f\u7528 getFirst \u65b9\u6cd5\u4f86\u83b7\u53d6\u7b2c\u4e00\u500b\u5143\u7d20\u3002<\/p>\n

\n\/\/ \u5275\u5efa\u4e00\u500b Map \u5c0d\u8c61\nlet myMap = new Map();\n\n\/\/ \u5411 Map \u5c0d\u8c61\u4e2d\u6dfb\u52a0\u5143\u7d20\nmyMap.set('name', 'John');\nmyMap.set('age', 30);\n\n\/\/ \u4f7f\u7528 getFirst \u65b9\u6cd5\u4f86\u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\nlet firstElement = myMap.getFirst();\n\n\/\/ \u8f38\u51fa\u7b2c\u4e00\u500b\u5143\u7d20\nconsole.log(firstElement); \/\/ {name: 'John'}\n<\/pre>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b Map \u5c0d\u8c61\uff0c\u4e26\u4e14\u5411\u5176\u4e2d\u6dfb\u52a0\u4e86\u5169\u500b\u5143\u7d20\uff0c\u7136\u5f8c\u4f7f\u7528 getFirst \u65b9\u6cd5\u4f86\u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u6700\u5f8c\u8f38\u51fa\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u7d50\u679c\u70ba {name: ‘John’}\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u8a0e\u8ad6\u4e86\u5982\u4f55\u4f7f\u7528 TypeScript Map \u4f86\u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u4e5f\u5c31\u662f getFirst \u65b9\u6cd5\u3002\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b Map \u5c0d\u8c61\uff0c\u4e26\u4e14\u5411\u5176\u4e2d\u6dfb\u52a0\u4e86\u5169\u500b\u5143\u7d20\uff0c\u7136\u5f8c\u4f7f\u7528 getFirst \u65b9\u6cd5\u4f86\u83b7\u53d6 Map \u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u6700\u5f8c\u8f38\u51fa\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u7d50\u679c\u70ba {name: ‘John’}\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScriptMap\u83b7\u53d6Map\u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\uff0c\u4e26\u8a73\u7d30\u89e3\u91cbgetFirst()\u51fd\u6578\u7684\u529f\u80fd\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u7372\u53d6Map\u5c0d\u8c61\u7684\u7b2c\u4e00\u500b\u5143\u7d20\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-5538","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\/pcFK27-1rk","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5538","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=5538"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5538\/revisions"}],"predecessor-version":[{"id":5539,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5538\/revisions\/5539"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}