{"id":5432,"date":"2023-01-05T12:40:07","date_gmt":"2023-01-05T04:40:07","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5432"},"modified":"2023-01-05T12:40:07","modified_gmt":"2023-01-05T04:40:07","slug":"%e4%bd%bf%e7%94%a8typescriptmap%e5%b0%87map%e5%b0%8d%e8%b1%a1%e7%9a%84%e9%8d%b5%e5%80%bc%e5%b0%8d%e8%bd%89%e6%8f%9b%e7%82%ba%e6%95%b8%e7%b5%84","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%bd%bf%e7%94%a8typescriptmap%e5%b0%87map%e5%b0%8d%e8%b1%a1%e7%9a%84%e9%8d%b5%e5%80%bc%e5%b0%8d%e8%bd%89%e6%8f%9b%e7%82%ba%e6%95%b8%e7%b5%84\/","title":{"rendered":"\u4f7f\u7528TypeScriptMap\u5c07Map\u5c0d\u8c61\u7684\u9375\u503c\u5c0d\u8f49\u63db\u70ba\u6578\u7d44"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Map, \u952e\u503c\u5bf9, \u8f6c\u5316, \u6570\u7ec4, entries\"><\/p>\n<h1>TypeScript Map \u5c06 Map \u5bf9\u8c61\u7684\u952e\u503c\u5bf9\u8f6c\u5316\u4e3a\u6570\u7ec4(entries)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7279\u6027\uff0c\u4f7f\u5f97 JavaScript \u7684\u958b\u767c\u66f4\u52a0\u5bb9\u6613\u3002\u5176\u4e2d\u4e00\u500b\u7279\u6027\u5c31\u662f Map\uff0c\u5b83\u53ef\u4ee5\u5c07\u9375\u503c\u5c0d\u8f49\u63db\u70ba\u6578\u7d44\uff08entries\uff09\u3002<\/p>\n<p>Map \u662f\u4e00\u7a2e\u5c0d\u8c61\uff0c\u5b83\u53ef\u4ee5\u5c07\u9375\u503c\u5c0d\u5b58\u5132\u5728\u4e00\u500b\u7279\u5b9a\u7684\u7d50\u69cb\u4e2d\u3002\u5b83\u53ef\u4ee5\u7528\u65bc\u5b58\u5132\u4efb\u4f55\u985e\u578b\u7684\u6578\u64da\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\uff0c\u6578\u5b57\uff0c\u5c0d\u8c61\uff0c\u6578\u7d44\u7b49\u3002Map \u5c0d\u8c61\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 entries() \u65b9\u6cd5\u5c07\u9375\u503c\u5c0d\u8f49\u63db\u70ba\u6578\u7d44\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 TypeScript Map \u5c07\u9375\u503c\u5c0d\u8f49\u63db\u70ba\u6578\u7d44\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet map = new Map();\n\nmap.set('name', 'John');\nmap.set('age', 30);\n\nlet entries = map.entries();\n\nfor (let entry of entries) {\n  console.log(entry);\n}\n<\/pre>\n<p>\u4e0a\u9762\u7684\u4ee3\u78bc\u5efa\u7acb\u4e86\u4e00\u500b Map \u5c0d\u8c61\uff0c\u4e26\u4f7f\u7528 set() \u65b9\u6cd5\u5c07\u9375\u503c\u5c0d\u6dfb\u52a0\u5230 Map \u5c0d\u8c61\u4e2d\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 entries() \u65b9\u6cd5\u5c07\u9375\u503c\u5c0d\u8f49\u63db\u70ba\u6578\u7d44\uff0c\u4e26\u4f7f\u7528 for&#8230;of \u5faa\u74b0\u5c07\u6bcf\u500b\u9375\u503c\u5c0d\u6253\u5370\u5230\u63a7\u5236\u53f0\u4e2d\u3002<\/p>\n<p>\u8f38\u51fa\u7d50\u679c\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: typescript\">\n[ 'name', 'John' ]\n[ 'age', 30 ]\n<\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0centries() \u65b9\u6cd5\u5c07 Map \u5c0d\u8c61\u7684\u9375\u503c\u5c0d\u8f49\u63db\u70ba\u4e86\u4e00\u500b\u6578\u7d44\uff0c\u6bcf\u500b\u6578\u7d44\u5143\u7d20\u90fd\u662f\u4e00\u500b\u9375\u503c\u5c0d\u3002<\/p>\n<p>TypeScript Map \u5c0d\u8c61\u9084\u63d0\u4f9b\u4e86\u5176\u4ed6\u4e00\u4e9b\u6709\u7528\u7684\u65b9\u6cd5\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>keys()\uff1a\u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6240\u6709\u9375\u7684\u6578\u7d44\u3002<\/li>\n<li>values()\uff1a\u8fd4\u56de Map \u5c0d\u8c61\u4e2d\u6240\u6709\u503c\u7684\u6578\u7d44\u3002<\/li>\n<li>has()\uff1a\u6aa2\u67e5 Map \u5c0d\u8c61\u4e2d\u662f\u5426\u5b58\u5728\u6307\u5b9a\u7684\u9375\u3002<\/li>\n<li>clear()\uff1a\u6e05\u9664 Map \u5c0d\u8c61\u4e2d\u7684\u6240\u6709\u9375\u503c\u5c0d\u3002<\/li>\n<\/ul>\n<p>TypeScript Map \u5c0d\u8c61\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u5c0d\u9375\u503c\u5c0d\u9032\u884c\u64cd\u4f5c\uff0c\u4e26\u5c07\u5b83\u5011\u8f49\u63db\u70ba\u6578\u7d44\uff0c\u4ee5\u4fbf\u66f4\u8f15\u9b06\u5730\u5c0d\u6578\u64da\u9032\u884c\u64cd\u4f5c\u3002<\/p>\n<p><!--more--><\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>TypeScript Map \u5c0d\u8c61\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u5c0d\u9375\u503c\u5c0d\u9032\u884c\u64cd\u4f5c\uff0c\u4e26\u5c07\u5b83\u5011\u8f49\u63db\u70ba\u6578\u7d44\uff08entries\uff09\uff0c\u4ee5\u4fbf\u66f4\u8f15\u9b06\u5730\u5c0d\u6578\u64da\u9032\u884c\u64cd\u4f5c\u3002\u5b83\u9084\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6709\u7528\u7684\u65b9\u6cd5\uff0c\u4f8b\u5982 keys()\uff0cvalues()\uff0chas() \u548c clear()\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u64cd\u4f5c Map \u5c0d\u8c61\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScriptMap\u5c07Map\u5c0d\u8c61\u7684\u9375\u503c\u5c0d\u8f49\u63db\u70ba\u6578\u7d44\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u7c21\u55ae\u7684\u793a\u4f8b\u4f86\u89e3\u91cb\u5982\u4f55\u4f7f\u7528Map\u5c0d\u8c61\u7684entries()\u65b9\u6cd5\u4f86\u5be6\u73fe\u8a72\u529f\u80fd\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-5432","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\/pcFK27-1pC","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5432","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=5432"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5432\/revisions"}],"predecessor-version":[{"id":5433,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5432\/revisions\/5433"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}