{"id":5056,"date":"2023-01-05T11:46:43","date_gmt":"2023-01-05T03:46:43","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5056"},"modified":"2023-01-05T11:46:43","modified_gmt":"2023-01-05T03:46:43","slug":"%e5%ad%b8%e7%bf%92typescript%e4%b8%ad%e5%ad%97%e4%b8%b2%e7%9a%84%e6%b1%82unicodecharat%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%ad%b8%e7%bf%92typescript%e4%b8%ad%e5%ad%97%e4%b8%b2%e7%9a%84%e6%b1%82unicodecharat%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u5b78\u7fd2TypeScript\u4e2d\u5b57\u4e32\u7684\u6c42Unicode(charAt)\u65b9\u6cd5"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Unicode, charAt\"><\/p>\n<h1>TypeScript \u5b57\u4e32\u7684\u6c42 Unicode(charAt)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u64c1\u6709 JavaScript \u7684\u6240\u6709\u7279\u6027\uff0c\u4e26\u4e14\u63d0\u4f9b\u4e86\u984d\u5916\u7684\u7279\u6027\uff0c\u4f8b\u5982\u985e\u578b\u6aa2\u67e5\u548c\u975c\u614b\u5206\u6790\u7b49\u3002\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 charAt() \u65b9\u6cd5\u4f86\u6c42\u53d6\u5b57\u4e32\u4e2d\u6307\u5b9a\u4f4d\u7f6e\u7684 Unicode \u503c\u3002<\/p>\n<p><!--more--><\/p>\n<p>charAt() \u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u5373\u8981\u6c42\u53d6\u7684\u5b57\u5143\u7684\u7d22\u5f15\u4f4d\u7f6e\uff0c\u4e26\u8fd4\u56de\u8a72\u4f4d\u7f6e\u7684 Unicode \u503c\u3002\u5982\u679c\u7d22\u5f15\u4f4d\u7f6e\u8d85\u51fa\u5b57\u4e32\u7684\u9577\u5ea6\uff0c\u5247\u8fd4\u56de\u7a7a\u5b57\u4e32\u3002<\/p>\n<pre class=\"brush: typescript\">\nlet str = \"Hello World!\";\nlet char = str.charAt(0); \/\/ H\nlet char2 = str.charAt(20); \/\/ \"\"\n<\/pre>\n<p>\u53e6\u5916\uff0ccharAt() \u65b9\u6cd5\u4e5f\u53ef\u4ee5\u63a5\u53d7\u8ca0\u6578\u53c3\u6578\uff0c\u6b64\u6642\u5b83\u6703\u5f9e\u5b57\u4e32\u7684\u672b\u5c3e\u958b\u59cb\u8a08\u7b97\u7d22\u5f15\u4f4d\u7f6e\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet str = \"Hello World!\";\nlet char = str.charAt(-1); \/\/ !\nlet char2 = str.charAt(-2); \/\/ d\n<\/pre>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0ccharAt() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4f86\u6c42\u53d6\u5b57\u4e32\u4e2d\u6307\u5b9a\u4f4d\u7f6e\u7684 Unicode \u503c\uff0c\u5b83\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u5373\u8981\u6c42\u53d6\u7684\u5b57\u5143\u7684\u7d22\u5f15\u4f4d\u7f6e\uff0c\u4e26\u8fd4\u56de\u8a72\u4f4d\u7f6e\u7684 Unicode \u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2TypeScript\u4e2d\u5b57\u4e32\u7684\u6c42Unicode(charAt)\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8b93\u4f60\u66f4\u6709\u6548\u7387\u7684\u64cd\u4f5c\u5b57\u4e32\uff0c\u8b93\u4f60\u7684\u7a0b\u5f0f\u66f4\u52a0\u9748\u6d3b\uff0c\u66f4\u5bb9\u6613\u958b\u767c\u51fa\u66f4\u591a\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-5056","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\/pcFK27-1jy","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5056","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=5056"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5056\/revisions"}],"predecessor-version":[{"id":5057,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5056\/revisions\/5057"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}