{"id":5022,"date":"2023-01-05T11:39:41","date_gmt":"2023-01-05T03:39:41","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5022"},"modified":"2023-01-05T11:39:41","modified_gmt":"2023-01-05T03:39:41","slug":"%e5%ad%b8%e7%bf%92typescript%e5%ad%97%e4%b8%b2%e9%95%b7%e5%ba%a6%e7%9a%84%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%ad%b8%e7%bf%92typescript%e5%ad%97%e4%b8%b2%e9%95%b7%e5%ba%a6%e7%9a%84%e6%8a%80%e5%b7%a7\/","title":{"rendered":"\u5b78\u7fd2TypeScript\u5b57\u4e32\u9577\u5ea6\u7684\u6280\u5de7"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u5b57\u4e32\u9577\u5ea6, length\"><\/p>\n<h1>TypeScript \u5b57\u4e32\u7684\u9577\u5ea6(length)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u64c1\u6709 JavaScript \u7684\u6240\u6709\u529f\u80fd\uff0c\u4e26\u4e14\u63d0\u4f9b\u4e86\u984d\u5916\u7684\u7279\u6027\uff0c\u4f8b\u5982\u985e\u578b\u6aa2\u67e5\u548c\u975c\u614b\u5206\u6790\u3002\u5728 TypeScript \u4e2d\uff0c\u5b57\u4e32\u662f\u4e00\u7a2e\u57fa\u672c\u7684\u8cc7\u6599\u578b\u5225\uff0c\u5b83\u53ef\u4ee5\u7528\u4f86\u5132\u5b58\u6587\u5b57\u8cc7\u6599\u3002<\/p>\n<p><!--more--><\/p>\n<p>TypeScript \u4e2d\u7684\u5b57\u4e32\u53ef\u4ee5\u4f7f\u7528 <code>length<\/code> \u5c6c\u6027\u4f86\u53d6\u5f97\u5b57\u4e32\u7684\u9577\u5ea6\uff0c\u5b83\u6703\u56de\u50b3\u4e00\u500b\u6574\u6578\uff0c\u4ee3\u8868\u5b57\u4e32\u4e2d\u7684\u5b57\u5143\u6578\u91cf\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u7a0b\u5f0f\u78bc\u4f86\u53d6\u5f97\u5b57\u4e32 <code>'Hello World'<\/code> \u7684\u9577\u5ea6\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet str = 'Hello World';\nlet len = str.length;\nconsole.log(len); \/\/ 11\n<\/pre>\n<p>\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u6703\u56de\u50b3 <code>11<\/code>\uff0c\u56e0\u70ba\u5b57\u4e32 <code>'Hello World'<\/code> \u5171\u6709 11 \u500b\u5b57\u5143\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>length<\/code> \u5c6c\u6027\u4f86\u53d6\u5f97\u5b57\u4e32\u7684\u9577\u5ea6\uff0c\u5b83\u6703\u56de\u50b3\u4e00\u500b\u6574\u6578\uff0c\u4ee3\u8868\u5b57\u4e32\u4e2d\u7684\u5b57\u5143\u6578\u91cf\u3002\u9019\u500b\u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u64cd\u4f5c\u5b57\u4e32\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u6709\u6548\u7387\u5730\u5be6\u73fe\u4e00\u4e9b\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1a\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScript\u5b57\u4e32\u9577\u5ea6\u7684\u6280\u5de7\uff0c\u53ef\u4ee5\u8b93\u4f60\u66f4\u6709\u6548\u7387\u5730\u4f7f\u7528TypeScript\uff0c\u4e26\u66f4\u52a0\u4e86\u89e3\u5b83\u7684\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-5022","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\/pcFK27-1j0","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5022","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=5022"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5022\/revisions"}],"predecessor-version":[{"id":5023,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5022\/revisions\/5023"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}