{"id":5128,"date":"2023-01-05T12:00:13","date_gmt":"2023-01-05T04:00:13","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5128"},"modified":"2023-01-05T12:00:13","modified_gmt":"2023-01-05T04:00:13","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescript%e5%ad%97%e4%b8%b2%e7%9a%84%e6%b1%82%e5%ad%97%e7%af%80%e9%95%b7%e5%ba%a6getbytelength","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%e5%ad%97%e4%b8%b2%e7%9a%84%e6%b1%82%e5%ad%97%e7%af%80%e9%95%b7%e5%ba%a6getbytelength\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScript\u5b57\u4e32\u7684\u6c42\u5b57\u7bc0\u9577\u5ea6(getByteLength)"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u5b57\u4e32, \u6c42\u5b57\u7bc0\u9577\u5ea6, getByteLength\"><\/p>\n<h1>TypeScript \u5b57\u4e32\u7684\u6c42\u5b57\u7bc0\u9577\u5ea6(getByteLength)<\/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\u3001\u6a21\u7d44\u5316\u7b49\u7b49\u3002\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>getByteLength()<\/code> \u65b9\u6cd5\u4f86\u6c42\u5b57\u4e32\u7684\u5b57\u7bc0\u9577\u5ea6\u3002<\/p>\n<h2>getByteLength() \u65b9\u6cd5<\/h2>\n<p>getByteLength() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4f86\u6c42\u5b57\u4e32\u7684\u5b57\u7bc0\u9577\u5ea6\uff0c\u5b83\u6703\u5c07\u5b57\u4e32\u4e2d\u7684\u6bcf\u500b\u5b57\u5143\u90fd\u8f49\u63db\u6210 UTF-8 \u7de8\u78bc\uff0c\u7136\u5f8c\u8a08\u7b97\u51fa\u5b57\u7bc0\u9577\u5ea6\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 getByteLength() \u65b9\u6cd5\u4f86\u6c42\u51fa\u5b57\u4e32 &#8220;Hello World&#8221; \u7684\u5b57\u7bc0\u9577\u5ea6\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet str = \"Hello World\";\nlet byteLength = str.getByteLength();\nconsole.log(byteLength); \/\/ 11\n<\/pre>\n<p>\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u6703\u8f38\u51fa 11\uff0c\u56e0\u70ba &#8220;Hello World&#8221; \u7684\u5b57\u7bc0\u9577\u5ea6\u70ba 11\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>getByteLength()<\/code> \u65b9\u6cd5\u4f86\u6c42\u5b57\u4e32\u7684\u5b57\u7bc0\u9577\u5ea6\u3002\u5b83\u6703\u5c07\u5b57\u4e32\u4e2d\u7684\u6bcf\u500b\u5b57\u5143\u90fd\u8f49\u63db\u6210 UTF-8 \u7de8\u78bc\uff0c\u7136\u5f8c\u8a08\u7b97\u51fa\u5b57\u7bc0\u9577\u5ea6\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u5982\u679c\u4f60\u60f3\u8981\u66f4\u6df1\u5165\u7684\u4e86\u89e3 TypeScript \u4e2d\u7684\u5b57\u4e32\u64cd\u4f5c\uff0c\u53ef\u4ee5\u53c3\u8003 <a href=\"https:\/\/www.typescriptlang.org\/docs\/handbook\/basic-types.html\" target=\"_blank\" rel=\"noopener\">TypeScript \u5b98\u65b9\u6587\u4ef6<\/a> \u4e2d\u7684\u76f8\u95dc\u7ae0\u7bc0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1aTypeScript\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\u4f86\u6c42\u5b57\u7bc0\u9577\u5ea6\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u63a7\u5236\u5b57\u4e32\u7684\u9577\u5ea6\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScript\u7684getByteLength\u51fd\u6578\u4f86\u6c42\u5b57\u7bc0\u9577\u5ea6\uff0c\u4ee5\u53ca\u5b83\u7684\u512a\u9ede\u548c\u7f3a\u9ede\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-5128","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\/pcFK27-1kI","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5128","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=5128"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5128\/revisions"}],"predecessor-version":[{"id":5129,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5128\/revisions\/5129"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}