{"id":5280,"date":"2023-01-05T12:22:03","date_gmt":"2023-01-05T04:22:03","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5280"},"modified":"2023-01-05T12:22:03","modified_gmt":"2023-01-05T04:22:03","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e4%be%86%e7%8d%b2%e5%8f%96%e9%8d%b5%e5%80%bc","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%e4%be%86%e7%8d%b2%e5%8f%96%e9%8d%b5%e5%80%bc\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScriptMap\u4f86\u7372\u53d6\u9375\u503c"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Map, get()\"><\/p>\n<h1>TypeScript Map \u83b7\u53d6\u952e\u503c(get())<\/h1>\n<p>TypeScript Map \u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u8b93\u4f60\u5132\u5b58\u9375\u503c\u5c0d\uff0c\u4e26\u4e14\u53ef\u4ee5\u5feb\u901f\u7684\u67e5\u627e\u9375\u503c\u5c0d\u3002\u5728 TypeScript \u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\u4f86\u83b7\u53d6 Map \u4e2d\u7684\u9375\u503c\u5c0d\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u5728 TypeScript \u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 <span style=\"font-weight: bold;\">Map<\/span> \u4f86\u5132\u5b58\u9375\u503c\u5c0d\uff0c\u4e26\u4e14\u53ef\u4ee5\u4f7f\u7528 <span style=\"font-weight: bold;\">get()<\/span> \u65b9\u6cd5\u4f86\u83b7\u53d6 Map \u4e2d\u7684\u9375\u503c\u5c0d\u3002<\/p>\n<pre class=\"brush: typescript\">\nlet myMap = new Map();\n\nmyMap.set(\"name\", \"John\");\nmyMap.set(\"age\", 30);\n\nconsole.log(myMap.get(\"name\")); \/\/ John\nconsole.log(myMap.get(\"age\")); \/\/ 30\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <span style=\"font-weight: bold;\">set()<\/span> \u65b9\u6cd5\u4f86\u8a2d\u7f6e\u9375\u503c\u5c0d\uff0c\u7136\u5f8c\u4f7f\u7528 <span style=\"font-weight: bold;\">get()<\/span> \u65b9\u6cd5\u4f86\u83b7\u53d6\u9375\u503c\u5c0d\u3002<\/p>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528 <span style=\"font-weight: bold;\">for&#8230;of<\/span> \u8ff4\u5708\u4f86\u904d\u6b77 Map \u4e2d\u7684\u9375\u503c\u5c0d\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet myMap = new Map();\n\nmyMap.set(\"name\", \"John\");\nmyMap.set(\"age\", 30);\n\nfor (let [key, value] of myMap) {\n  console.log(key + \": \" + value);\n}\n\n\/\/ name: John\n\/\/ age: 30\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <span style=\"font-weight: bold;\">for&#8230;of<\/span> \u8ff4\u5708\u4f86\u904d\u6b77 Map \u4e2d\u7684\u9375\u503c\u5c0d\uff0c\u4e26\u4e14\u5c07\u9375\u503c\u5c0d\u7684\u503c\u8f38\u51fa\u5230\u63a7\u5236\u53f0\u3002<\/p>\n<p>\u7e3d\u7d50\uff0cTypeScript Map \u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u8b93\u4f60\u5132\u5b58\u9375\u503c\u5c0d\uff0c\u4e26\u4e14\u53ef\u4ee5\u5feb\u901f\u7684\u67e5\u627e\u9375\u503c\u5c0d\u3002\u5728 TypeScript \u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\u4f86\u83b7\u53d6 Map \u4e2d\u7684\u9375\u503c\u5c0d\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528 for&#8230;of \u8ff4\u5708\u4f86\u904d\u6b77 Map \u4e2d\u7684\u9375\u503c\u5c0d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScriptMap\u4f86\u7372\u53d6\u9375\u503c\uff0cMap\u662f\u4e00\u7a2eJavaScript\u5c0d\u8c61\uff0c\u53ef\u4ee5\u7528\u65bc\u5b58\u5132\u9375\u503c\u5c0d\uff0c\u4e26\u63d0\u4f9b\u4e00\u7cfb\u5217\u65b9\u6cd5\u4f86\u64cd\u4f5c\u5b83\u5011\uff0c\u4f8b\u5982get()\uff0cset()\uff0chas()\u7b49\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-5280","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\/pcFK27-1na","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5280","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=5280"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5280\/revisions"}],"predecessor-version":[{"id":5281,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5280\/revisions\/5281"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}