{"id":5206,"date":"2023-01-05T12:11:59","date_gmt":"2023-01-05T04:11:59","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5206"},"modified":"2023-01-05T12:11:59","modified_gmt":"2023-01-05T04:11:59","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%ac%a6%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8countcharacters","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%ac%a6%e5%87%ba%e7%8f%be%e6%ac%a1%e6%95%b8countcharacters\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528TypeScript\u5b57\u4e32\u7684\u6c42\u5b57\u7b26\u51fa\u73fe\u6b21\u6578(countCharacters)"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u5b57\u4e32, \u6c42\u5b57\u7b26\u51fa\u73fe\u6b21\u6578, countCharacters\"><\/p>\n<h1>TypeScript \u5b57\u4e32\u7684\u6c42\u5b57\u7b26\u51fa\u73fe\u6b21\u6578(countCharacters)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e\u7531 Microsoft \u958b\u767c\u7684 JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u64c1\u6709\u66f4\u591a\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u958b\u767c\u51fa\u66f4\u9ad8\u54c1\u8cea\u7684\u7a0b\u5f0f\u78bc\u3002\u5728 TypeScript \u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 <strong>countCharacters<\/strong> \u9019\u500b\u51fd\u5f0f\u4f86\u6c42\u5b57\u4e32\u4e2d\u67d0\u500b\u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\u3002<\/p>\n<h2>countCharacters \u51fd\u5f0f\u7684\u4f7f\u7528\u65b9\u6cd5<\/h2>\n<p>countCharacters \u51fd\u5f0f\u7684\u4f7f\u7528\u65b9\u6cd5\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u50b3\u5165\u5169\u500b\u53c3\u6578\uff0c\u7b2c\u4e00\u500b\u53c3\u6578\u662f\u8981\u641c\u5c0b\u7684\u5b57\u4e32\uff0c\u7b2c\u4e8c\u500b\u53c3\u6578\u662f\u8981\u641c\u5c0b\u7684\u5b57\u7b26\uff0c\u51fd\u5f0f\u6703\u56de\u50b3\u641c\u5c0b\u5230\u7684\u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\u3002<\/p>\n<pre class=\"brush: typescript\">\nfunction countCharacters(str: string, char: string): number {\n    let count = 0;\n    for (let i = 0; i < str.length; i++) {\n        if (str[i] === char) {\n            count++;\n        }\n    }\n    return count;\n}\n<\/pre>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u6211\u5011\u5c07\u641c\u5c0b\u5b57\u4e32 <code>'Hello World'<\/code> \u4e2d <code>'l'<\/code> \u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet str = 'Hello World';\nlet char = 'l';\nlet count = countCharacters(str, char);\nconsole.log(count); \/\/ 3\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230 <code>'l'<\/code> \u5b57\u7b26\u5728 <code>'Hello World'<\/code> \u5b57\u4e32\u4e2d\u51fa\u73fe\u4e86 3 \u6b21\uff0c\u56e0\u6b64\u51fd\u5f0f\u6703\u56de\u50b3 3\u3002<\/p>\n<h2>countCharacters \u51fd\u5f0f\u7684\u512a\u9ede<\/h2>\n<p>countCharacters \u51fd\u5f0f\u7684\u512a\u9ede\u5728\u65bc\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5feb\u901f\u7684\u6c42\u51fa\u5b57\u4e32\u4e2d\u67d0\u500b\u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\uff0c\u800c\u4e0d\u9700\u8981\u81ea\u5df1\u5beb\u51fa\u4e00\u500b\u5faa\u74b0\u4f86\u641c\u5c0b\u5b57\u4e32\u4e2d\u7684\u5b57\u7b26\uff0c\u9019\u6a23\u53ef\u4ee5\u5927\u5927\u7684\u63d0\u5347\u958b\u767c\u6548\u7387\u3002<\/p>\n<p><!--more--><\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>\u5728 TypeScript \u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 <strong>countCharacters<\/strong> \u9019\u500b\u51fd\u5f0f\u4f86\u6c42\u5b57\u4e32\u4e2d\u67d0\u500b\u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5feb\u901f\u7684\u6c42\u51fa\u5b57\u4e32\u4e2d\u67d0\u500b\u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\uff0c\u800c\u4e0d\u9700\u8981\u81ea\u5df1\u5beb\u51fa\u4e00\u500b\u5faa\u74b0\u4f86\u641c\u5c0b\u5b57\u4e32\u4e2d\u7684\u5b57\u7b26\uff0c\u9019\u6a23\u53ef\u4ee5\u5927\u5927\u7684\u63d0\u5347\u958b\u767c\u6548\u7387\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\u8a08\u7b97\u5b57\u4e32\u4e2d\u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\uff0c\u7a31\u70bacountCharacters\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScript\u7684countCharacters\u51fd\u6578\u4f86\u8a08\u7b97\u5b57\u4e32\u4e2d\u5b57\u7b26\u51fa\u73fe\u7684\u6b21\u6578\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-5206","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\/pcFK27-1lY","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5206","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=5206"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5206\/revisions"}],"predecessor-version":[{"id":5207,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5206\/revisions\/5207"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}