{"id":5234,"date":"2023-01-05T12:15:21","date_gmt":"2023-01-05T04:15:21","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5234"},"modified":"2023-01-05T12:15:21","modified_gmt":"2023-01-05T04:15:21","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescript%e6%b3%9b%e5%9e%8b%e7%b1%bb","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%a8typescript%e6%b3%9b%e5%9e%8b%e7%b1%bb\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScript\u6cdb\u578b\u7c7b"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u6cdb\u578b, \u6cdb\u578b\u7c7b\"><\/p>\n<h1>TypeScript \u6cdb\u578b(generics)\u7684\u6cdb\u578b\u7c7b<\/h1>\n<p>TypeScript \u6cdb\u578b(generics)\u7684\u6cdb\u578b\u7c7b\u662f\u4e00\u7a2e\u53ef\u4ee5\u8b93\u4f60\u5728\u5b9a\u7fa9\u985e\u5225\u6642\uff0c\u6307\u5b9a\u4e00\u500b\u6216\u591a\u500b\u8b8a\u6578\uff0c\u4ee5\u4fbf\u5728\u4f7f\u7528\u6642\u53ef\u4ee5\u6307\u5b9a\u4e0d\u540c\u7684\u578b\u5225\u3002\u5b83\u53ef\u4ee5\u8b93\u4f60\u5728\u5b9a\u7fa9\u985e\u5225\u6642\uff0c\u4e0d\u5fc5\u6307\u5b9a\u5177\u9ad4\u7684\u578b\u5225\uff0c\u800c\u662f\u5728\u4f7f\u7528\u6642\u518d\u6307\u5b9a\u3002<\/p>\n<p><!--more--><\/p>\n<p>TypeScript \u6cdb\u578b\u7c7b\u7684\u5b9a\u7fa9\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: typescript\">\nclass GenericClass<T> {\n    value: T;\n    add: (x: T, y: T) => T;\n}\n<\/pre>\n<p>\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba <code>GenericClass<\/code> \u7684\u6cdb\u578b\u985e\u5225\uff0c\u5b83\u6709\u4e00\u500b <code>T<\/code> \u578b\u5225\u7684\u8b8a\u6578 <code>value<\/code> \u548c\u4e00\u500b <code>add<\/code> \u65b9\u6cd5\uff0c\u5b83\u63a5\u53d7\u5169\u500b <code>T<\/code> \u578b\u5225\u7684\u53c3\u6578\uff0c\u4e26\u8fd4\u56de\u4e00\u500b <code>T<\/code> \u578b\u5225\u7684\u503c\u3002<\/p>\n<p>\u73fe\u5728\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>GenericClass<\/code> \u985e\u5225\u4f86\u5275\u5efa\u4e00\u500b\u65b0\u7684\u985e\u5225\uff0c\u4e26\u6307\u5b9a <code>T<\/code> \u7684\u578b\u5225\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet myGenericClass = new GenericClass<number>();\nmyGenericClass.value = 10;\nmyGenericClass.add = function(x, y) {\n    return x + y;\n};\n\nlet result = myGenericClass.add(20, 30);\nconsole.log(result); \/\/ 50\n<\/pre>\n<p>\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>GenericClass<\/code> \u985e\u5225\u5275\u5efa\u4e86\u4e00\u500b\u65b0\u7684\u985e\u5225\uff0c\u4e26\u6307\u5b9a <code>T<\/code> \u7684\u578b\u5225\u70ba <code>number<\/code>\uff0c\u7136\u5f8c\u5c07 <code>value<\/code> \u8a2d\u7f6e\u70ba 10\uff0c\u4e26\u5c07 <code>add<\/code> \u65b9\u6cd5\u8a2d\u7f6e\u70ba\u4e00\u500b\u52a0\u6cd5\u51fd\u6578\uff0c\u6700\u5f8c\u8abf\u7528 <code>add<\/code> \u65b9\u6cd5\uff0c\u5c07 20 \u548c 30 \u76f8\u52a0\uff0c\u7d50\u679c\u70ba 50\u3002<\/p>\n<p>TypeScript \u6cdb\u578b\u7c7b\u7684\u6cdb\u578b\u53c3\u6578\u53ef\u4ee5\u662f\u4efb\u4f55\u578b\u5225\uff0c\u5305\u62ec\u57fa\u672c\u578b\u5225\u3001\u985e\u5225\u3001\u63a5\u53e3\u7b49\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u5b9a\u7fa9\u985e\u5225\u6642\uff0c\u66f4\u52a0\u7075\u6d3b\uff0c\u53ef\u4ee5\u6839\u64da\u4e0d\u540c\u7684\u578b\u5225\uff0c\u5b9a\u7fa9\u51fa\u4e0d\u540c\u7684\u985e\u5225\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1aTypeScript\u6cdb\u578b\u7c7b\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u5275\u5efa\u53ef\u91cd\u7528\u7684\u4ee3\u78bc\uff0c\u4e26\u6e1b\u5c11\u91cd\u8907\u7684\u5de5\u4f5c\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScript\u6cdb\u578b\u7c7b\uff0c\u4ee5\u53ca\u5b83\u5982\u4f55\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\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-5234","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\/pcFK27-1mq","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5234","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=5234"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5234\/revisions"}],"predecessor-version":[{"id":5235,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5234\/revisions\/5235"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}