{"id":5552,"date":"2023-01-05T13:05:43","date_gmt":"2023-01-05T05:05:43","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5552"},"modified":"2023-01-05T13:05:43","modified_gmt":"2023-01-05T05:05:43","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e5%88%a4%e6%96%b7map%e5%b0%8d%e8%b1%a1%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e6%9f%90%e5%80%8b%e5%80%bc","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e5%88%a4%e6%96%b7map%e5%b0%8d%e8%b1%a1%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e6%9f%90%e5%80%8b%e5%80%bc\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528TypeScriptMap\u5224\u65b7Map\u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Map, hasValue\"><\/p>\n<h1>TypeScript Map \u5224\u65b7 Map \u5bf9\u8c61\u662f\u5426\u5305\u542b\u67d0\u4e2a\u503c(hasValue)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u985e\u578b\u6aa2\u67e5\u548c\u975c\u614b\u5206\u6790\u529f\u80fd\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u652f\u6301\u958b\u767c\u5927\u578b\u9805\u76ee\u3002TypeScript \u63d0\u4f9b\u4e86 Map \u985e\u578b\uff0c\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u9375\u503c\u5c0d\uff0c\u4e26\u63d0\u4f9b\u4e86 hasValue \u65b9\u6cd5\u4f86\u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\u3002<\/p>\n<p><!--more--><\/p>\n<p>Map \u985e\u578b\u662f TypeScript \u4e2d\u7684\u4e00\u7a2e\u985e\u578b\uff0c\u5b83\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u9375\u503c\u5c0d\uff0c\u4e26\u63d0\u4f9b\u4e86\u4e00\u4e9b\u64cd\u4f5c\u65b9\u6cd5\uff0c\u4f8b\u5982 hasValue \u65b9\u6cd5\uff0c\u53ef\u4ee5\u7528\u4f86\u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\u3002<\/p>\n<pre class=\"brush: typescript\">\nlet map = new Map();\nmap.set('name', 'John');\nmap.set('age', 20);\n\n\/\/ \u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\nlet hasName = map.hasValue('name'); \/\/ true\nlet hasAge = map.hasValue('age'); \/\/ true\nlet hasGender = map.hasValue('gender'); \/\/ false\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 set \u65b9\u6cd5\u5c07\u9375\u503c\u5c0d\u6dfb\u52a0\u5230 Map \u5c0d\u8c61\u4e2d\uff0c\u7136\u5f8c\u4f7f\u7528 hasValue \u65b9\u6cd5\u4f86\u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\uff0c\u5982\u679c\u5305\u542b\u5247\u8fd4\u56de true\uff0c\u5426\u5247\u8fd4\u56de false\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>TypeScript \u63d0\u4f9b\u4e86 Map \u985e\u578b\uff0c\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u9375\u503c\u5c0d\uff0c\u4e26\u63d0\u4f9b\u4e86 hasValue \u65b9\u6cd5\u4f86\u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\u3002\u901a\u904e\u4f7f\u7528 hasValue \u65b9\u6cd5\uff0c\u53ef\u4ee5\u66f4\u52a0\u65b9\u4fbf\u5730\u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\uff0c\u4ee5\u63d0\u9ad8\u958b\u767c\u6548\u7387\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\u6211\u5011\u5feb\u901f\u5224\u65b7Map\u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\uff0c\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScriptMap\u7684hasValue()\u65b9\u6cd5\u4f86\u5224\u65b7Map\u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u503c\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-5552","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\/pcFK27-1ry","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5552","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=5552"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5552\/revisions"}],"predecessor-version":[{"id":5553,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5552\/revisions\/5553"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}