{"id":5544,"date":"2023-01-05T13:02:15","date_gmt":"2023-01-05T05:02:15","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5544"},"modified":"2023-01-05T13:02:15","modified_gmt":"2023-01-05T05:02:15","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%96map%e5%b0%8d%e8%b1%a1%e7%9a%84%e6%89%80%e6%9c%89%e9%8d%b5%e5%90%8d","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%96map%e5%b0%8d%e8%b1%a1%e7%9a%84%e6%89%80%e6%9c%89%e9%8d%b5%e5%90%8d\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScriptMap\u4f86\u7372\u53d6Map\u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Map, \u952e\u540d, getKeys\"><\/p>\n<h1>TypeScript Map \u83b7\u53d6 Map \u5bf9\u8c61\u7684\u6240\u6709\u952e\u540d(getKeys)<\/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\u985e\u578b\u5b89\u5168\u6027\u3002TypeScript \u4e5f\u652f\u6301 Map \u985e\u578b\uff0c\u5b83\u662f\u4e00\u7a2e\u9375\u503c\u5c0d\u7684\u6578\u64da\u7d50\u69cb\uff0c\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u4efb\u610f\u985e\u578b\u7684\u6578\u64da\u3002\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Map \u985e\u578b\u4f86\u8a2a\u554f Map \u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u8a2a\u554f Map \u5c0d\u8c61\u4e2d\u7684\u6578\u64da\u3002<\/p>\n<h2>TypeScript Map \u83b7\u53d6 Map \u5bf9\u8c61\u7684\u6240\u6709\u952e\u540d(getKeys)<\/h2>\n<p>\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>getKeys()<\/code> \u65b9\u6cd5\u4f86\u8a2a\u554f Map \u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d\u3002\u8a72\u65b9\u6cd5\u6703\u8fd4\u56de\u4e00\u500b\u5305\u542b\u6240\u6709\u9375\u540d\u7684\u6578\u7d44\uff0c\u53ef\u4ee5\u4f7f\u7528\u8a72\u6578\u7d44\u4f86\u8a2a\u554f Map \u5c0d\u8c61\u4e2d\u7684\u6578\u64da\u3002<\/p>\n<pre class=\"brush: typescript\">\nlet myMap = new Map();\nmyMap.set(\"name\", \"John\");\nmyMap.set(\"age\", 30);\n\nlet keys = myMap.getKeys();\n\nconsole.log(keys); \/\/ [\"name\", \"age\"]\n<\/pre>\n<p>\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b Map \u5c0d\u8c61\uff0c\u4e26\u4f7f\u7528 <code>set()<\/code> \u65b9\u6cd5\u5411\u5176\u4e2d\u6dfb\u52a0\u4e86\u5169\u500b\u9375\u503c\u5c0d\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 <code>getKeys()<\/code> \u65b9\u6cd5\u4f86\u7372\u53d6 Map \u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d\uff0c\u4e26\u5c07\u5176\u5b58\u5132\u5728 <code>keys<\/code> \u8b8a\u91cf\u4e2d\u3002\u6700\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 <code>console.log()<\/code> \u65b9\u6cd5\u5c07 <code>keys<\/code> \u8b8a\u91cf\u7684\u503c\u6253\u5370\u51fa\u4f86\uff0c\u8f38\u51fa\u7d50\u679c\u70ba <code>[\"name\", \"age\"]<\/code>\u3002<\/p>\n<p>\u9664\u4e86 <code>getKeys()<\/code> \u65b9\u6cd5\u4e4b\u5916\uff0cTypeScript \u4e2d\u9084\u63d0\u4f9b\u4e86\u5176\u4ed6\u4e00\u4e9b\u7528\u65bc\u8a2a\u554f Map \u5c0d\u8c61\u7684\u65b9\u6cd5\uff0c\u4f8b\u5982 <code>getValues()<\/code> \u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u7528\u65bc\u7372\u53d6 Map \u5c0d\u8c61\u4e2d\u6240\u6709\u503c\u7684\u6578\u7d44\uff1b<code>has()<\/code> \u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u7528\u65bc\u6aa2\u67e5 Map \u5c0d\u8c61\u4e2d\u662f\u5426\u5b58\u5728\u6307\u5b9a\u7684\u9375\uff1b<code>delete()<\/code> \u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u7528\u65bc\u522a\u9664 Map \u5c0d\u8c61\u4e2d\u7684\u6307\u5b9a\u9375\u503c\u5c0d\u7b49\u3002<\/p>\n<p>\u4f7f\u7528 TypeScript \u4e2d\u7684 Map \u985e\u578b\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u8a2a\u554f Map \u5c0d\u8c61\u4e2d\u7684\u6578\u64da\u3002<strong>\u4f7f\u7528 <code>getKeys()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u8a2a\u554f Map \u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u8a2a\u554f Map \u5c0d\u8c61\u4e2d\u7684\u6578\u64da\u3002<\/strong>\u6b64\u5916\uff0cTypeScript \u4e2d\u9084\u63d0\u4f9b\u4e86\u5176\u4ed6\u4e00\u4e9b\u7528\u65bc\u8a2a\u554f Map \u5c0d\u8c61\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9078\u64c7\u4f7f\u7528\u3002<\/p>\n<p><!--more--><\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 TypeScript Map \u83b7\u53d6 Map \u5bf9\u8c61\u7684\u6240\u6709\u952e\u540d(getKeys)\u3002\u6211\u5011\u9996\u5148\u4ecb\u7d39\u4e86 TypeScript \u4e2d\u7684 Map \u985e\u578b\uff0c\u4e26\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 <code>getKeys()<\/code> \u65b9\u6cd5\u4f86\u8a2a\u554f Map \u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d\u3002\u6b64\u5916\uff0c\u6211\u5011\u9084\u4ecb\u7d39\u4e86 TypeScript \u4e2d\u9084\u63d0\u4f9b\u4e86\u5176\u4ed6\u4e00\u4e9b\u7528\u65bc\u8a2a\u554f Map \u5c0d\u8c61\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9078\u64c7\u4f7f\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1aTypeScriptMap\u662f\u4e00\u7a2e\u975e\u5e38\u6709\u7528\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u8b93\u60a8\u5b58\u5132\u9375\u503c\u5c0d\uff0c\u4e26\u4f7f\u7528getKeys\uff08\uff09\u51fd\u6578\u4f86\u7372\u53d6Map\u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScriptMap\u4f86\u7372\u53d6Map\u5c0d\u8c61\u7684\u6240\u6709\u9375\u540d\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-5544","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\/pcFK27-1rq","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5544","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=5544"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5544\/revisions"}],"predecessor-version":[{"id":5545,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5544\/revisions\/5545"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}