{"id":5408,"date":"2023-01-05T12:37:21","date_gmt":"2023-01-05T04:37:21","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5408"},"modified":"2023-01-05T12:37:21","modified_gmt":"2023-01-05T04:37:21","slug":"%e4%bd%bf%e7%94%a8typescriptmap%e5%bf%ab%e9%80%9f%e6%b5%85%e6%8b%b7%e8%b4%9dmap%e5%b0%8d%e8%b1%a1","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%bd%bf%e7%94%a8typescriptmap%e5%bf%ab%e9%80%9f%e6%b5%85%e6%8b%b7%e8%b4%9dmap%e5%b0%8d%e8%b1%a1\/","title":{"rendered":"\u4f7f\u7528TypeScriptMap\u5feb\u901f\u6d45\u62f7\u8d1dMap\u5c0d\u8c61"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Map, shallowCopy\"><\/p>\n<h1>TypeScript Map \u5c07 Map \u5bf9\u8c61\u8fdb\u884c\u6d45\u62f7\u8d1d(shallowCopy())<\/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\uff0c\u6a21\u584a\u7cfb\u7d71\uff0c\u7b49\u7b49\u3002\u5b83\u4e5f\u63d0\u4f9b\u4e86\u4e00\u4e9b\u65b0\u7684\u6578\u64da\u985e\u578b\uff0c\u4f8b\u5982 Map\uff0cSet\uff0cWeakMap \u7b49\u3002<\/p>\n<p>Map \u662f\u4e00\u7a2e\u9375\u503c\u5c0d\u7684\u6578\u64da\u985e\u578b\uff0c\u5b83\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u4efb\u4f55\u985e\u578b\u7684\u6578\u64da\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\uff0c\u6578\u5b57\uff0c\u5c0d\u8c61\uff0c\u51fd\u6578\u7b49\u3002\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u5c07 Map \u5c0d\u8c61\u9032\u884c\u62f7\u8c9d\uff0c\u4ee5\u4fbf\u5c0d\u5176\u9032\u884c\u66f4\u6539\u800c\u4e0d\u5f71\u97ff\u539f\u59cb\u5c0d\u8c61\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 TypeScript Map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002<\/p>\n<h2>TypeScript Map \u5c0d\u8c61\u7684\u6d45\u62f7\u8c9d<\/h2>\n<p>\u5728 TypeScript \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>Map.prototype.forEach()<\/code> \u65b9\u6cd5\u4f86\u5c0d Map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002\u8a72\u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u56de\u8abf\u51fd\u6578\uff0c\u8a72\u56de\u8abf\u51fd\u6578\u63a5\u53d7\u4e09\u500b\u53c3\u6578\uff1a\u9375\uff0c\u503c\u548c Map \u5c0d\u8c61\u672c\u8eab\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u8a72\u56de\u8abf\u51fd\u6578\u5c07 Map \u5c0d\u8c61\u7684\u9375\u548c\u503c\u62f7\u8c9d\u5230\u65b0\u7684 Map \u5c0d\u8c61\u4e2d\uff0c\u4ee5\u5be6\u73fe\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002<\/p>\n<pre class=\"brush: javascript\">\n\/\/ \u5b9a\u7fa9\u4e00\u500b Map \u5c0d\u8c61\nlet map = new Map();\nmap.set('name', 'John');\nmap.set('age', 30);\n\n\/\/ \u5b9a\u7fa9\u4e00\u500b\u65b0\u7684 Map \u5c0d\u8c61\nlet shallowCopy = new Map();\n\n\/\/ \u5c0d map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\nmap.forEach((value, key) => {\n    shallowCopy.set(key, value);\n});\n\n\/\/ \u8f38\u51fa shallowCopy \u5c0d\u8c61\nconsole.log(shallowCopy); \/\/ Map { 'name' => 'John', 'age' => 30 }\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b Map \u5c0d\u8c61\uff0c\u7136\u5f8c\u4f7f\u7528 <code>Map.prototype.forEach()<\/code> \u65b9\u6cd5\u5c0d\u5176\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002\u8a72\u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u56de\u8abf\u51fd\u6578\uff0c\u8a72\u56de\u8abf\u51fd\u6578\u63a5\u53d7\u4e09\u500b\u53c3\u6578\uff1a\u9375\uff0c\u503c\u548c Map \u5c0d\u8c61\u672c\u8eab\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u8a72\u56de\u8abf\u51fd\u6578\u5c07 Map \u5c0d\u8c61\u7684\u9375\u548c\u503c\u62f7\u8c9d\u5230\u65b0\u7684 Map \u5c0d\u8c61\u4e2d\uff0c\u4ee5\u5be6\u73fe\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\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 \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>Map.prototype.forEach()<\/code> \u65b9\u6cd5\u5c0d Map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002\u8a72\u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u56de\u8abf\u51fd\u6578\uff0c\u8a72\u56de\u8abf\u51fd\u6578\u63a5\u53d7\u4e09\u500b\u53c3\u6578\uff1a\u9375\uff0c\u503c\u548c Map \u5c0d\u8c61\u672c\u8eab\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u8a72\u56de\u8abf\u51fd\u6578\u5c07 Map \u5c0d\u8c61\u7684\u9375\u548c\u503c\u62f7\u8c9d\u5230\u65b0\u7684 Map \u5c0d\u8c61\u4e2d\uff0c\u4ee5\u5be6\u73fe\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u6b64\u5916\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u4f7f\u7528 <code>Map.prototype.entries()<\/code> \u65b9\u6cd5\u5c0d Map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002\u8a72\u65b9\u6cd5\u8fd4\u56de\u4e00\u500b\u5305\u542b Map \u5c0d\u8c61\u4e2d\u6240\u6709\u9375\u503c\u5c0d\u7684\u8fed\u4ee3\u5668\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u8a72\u8fed\u4ee3\u5668\u5c07 Map \u5c0d\u8c61\u7684\u9375\u548c\u503c\u62f7\u8c9d\u5230\u65b0\u7684 Map \u5c0d\u8c61\u4e2d\uff0c\u4ee5\u5be6\u73fe\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002<\/p>\n<pre class=\"brush: javascript\">\n\/\/ \u5b9a\u7fa9\u4e00\u500b Map \u5c0d\u8c61\nlet map = new Map();\nmap.set('name', 'John');\nmap.set('age', 30);\n\n\/\/ \u5b9a\u7fa9\u4e00\u500b\u65b0\u7684 Map \u5c0d\u8c61\nlet shallowCopy = new Map();\n\n\/\/ \u5c0d map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\nlet entries = map.entries();\nfor (let [key, value] of entries) {\n    shallowCopy.set(key, value);\n}\n\n\/\/ \u8f38\u51fa shallowCopy \u5c0d\u8c61\nconsole.log(shallowCopy); \/\/ Map { 'name' => 'John', 'age' => 30 }\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>Map.prototype.entries()<\/code> \u65b9\u6cd5\u5c0d Map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002\u8a72\u65b9\u6cd5\u8fd4\u56de\u4e00\u500b\u5305\u542b Map \u5c0d\u8c61\u4e2d\u6240\u6709\u9375\u503c\u5c0d\u7684\u8fed\u4ee3\u5668\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u8a72\u8fed\u4ee3\u5668\u5c07 Map \u5c0d\u8c61\u7684\u9375\u548c\u503c\u62f7\u8c9d\u5230\u65b0\u7684 Map \u5c0d\u8c61\u4e2d\uff0c\u4ee5\u5be6\u73fe\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002<\/p>\n<p>\u7e3d\u4e4b\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>Map.prototype.forEach()<\/code> \u6216 <code>Map.prototype.entries()<\/code> \u65b9\u6cd5\u5c0d Map \u5c0d\u8c61\u9032\u884c\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002\u9019\u5169\u7a2e\u65b9\u6cd5\u90fd\u53ef\u4ee5\u5c07 Map \u5c0d\u8c61\u7684\u9375\u548c\u503c\u62f7\u8c9d\u5230\u65b0\u7684 Map \u5c0d\u8c61\u4e2d\uff0c\u4ee5\u5be6\u73fe\u6d45\u62f7\u8c9d\uff08shallowCopy\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScriptMap\u5feb\u901f\u6d45\u62f7\u8d1dMap\u5c0d\u8c61\uff0c\u4e86\u89e3\u5982\u4f55\u4f7f\u7528shallowCopy()\u51fd\u6578\u5c07Map\u5c0d\u8c61\u62f7\u8d1d\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528Map\u5c0d\u8c61\u7684\u57fa\u672c\u64cd\u4f5c\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-5408","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\/pcFK27-1pe","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5408","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=5408"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5408\/revisions"}],"predecessor-version":[{"id":5409,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5408\/revisions\/5409"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}