{"id":5070,"date":"2023-01-05T11:49:16","date_gmt":"2023-01-05T03:49:16","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5070"},"modified":"2023-01-05T11:49:16","modified_gmt":"2023-01-05T03:49:16","slug":"%e4%ba%86%e8%a7%a3typescript%e5%ad%97%e4%b8%b2%e7%9a%84unicode%e5%ad%97%e7%ac%a6%e5%80%8b%e6%95%b8lengthinutf8bytes","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e5%ad%97%e4%b8%b2%e7%9a%84unicode%e5%ad%97%e7%ac%a6%e5%80%8b%e6%95%b8lengthinutf8bytes\/","title":{"rendered":"\u4e86\u89e3TypeScript\u5b57\u4e32\u7684Unicode\u5b57\u7b26\u500b\u6578(lengthInUtf8Bytes)"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Unicode, \u5b57\u4e32, \u5b57\u7b26\u500b\u6578, lengthInUtf8Bytes\"><\/p>\n<h1>TypeScript \u5b57\u4e32\u7684 Unicode \u5b57\u7b26\u500b\u6578(lengthInUtf8Bytes)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u652f\u6301 Unicode \u5b57\u7b26\u500b\u6578\u7684\u8a08\u7b97\u3002\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 lengthInUtf8Bytes() \u65b9\u6cd5\u4f86\u8a08\u7b97 Unicode \u5b57\u7b26\u500b\u6578\u3002<\/p>\n<p>lengthInUtf8Bytes() \u65b9\u6cd5\u53ef\u4ee5\u7528\u4f86\u8a08\u7b97\u5b57\u4e32\u4e2d Unicode \u5b57\u7b26\u7684\u500b\u6578\uff0c\u5b83\u6703\u5c07\u5b57\u4e32\u4e2d\u7684\u6bcf\u500b\u5b57\u7b26\u8f49\u63db\u70ba UTF-8 \u7de8\u78bc\uff0c\u7136\u5f8c\u8a08\u7b97\u7de8\u78bc\u5f8c\u7684\u5b57\u7b26\u500b\u6578\u3002<\/p>\n<p>\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u5b57\u4e32 &#8220;Hello World&#8221;\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 lengthInUtf8Bytes() \u65b9\u6cd5\u4f86\u8a08\u7b97\u5b83\u7684 Unicode \u5b57\u7b26\u500b\u6578\uff1a<\/p>\n<pre class=\"brush: javascript\">\nlet str = \"Hello World\";\nlet length = str.lengthInUtf8Bytes();\nconsole.log(length); 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