{"id":5092,"date":"2023-01-05T11:54:53","date_gmt":"2023-01-05T03:54:53","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5092"},"modified":"2023-01-05T11:54:53","modified_gmt":"2023-01-05T03:54:53","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8typescript%e7%b1%bb%e7%9a%84%e7%b9%bc%e6%89%bf","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8typescript%e7%b1%bb%e7%9a%84%e7%b9%bc%e6%89%bf\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u5229\u7528TypeScript\u7c7b\u7684\u7e7c\u627f"},"content":{"rendered":"

<\/p>\n

TypeScript \u7c7b(classes)\u7684\u7ee7\u627f<\/h1>\n

TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u9762\u5411\u5c0d\u8c61\u7684\u7a0b\u5f0f\u8a2d\u8a08\u529f\u80fd\uff0c\u5176\u4e2d\u5305\u62ec\u7e7c\u627f\u3002\u7e7c\u627f\u662f\u4e00\u7a2e\u7a0b\u5f0f\u8a2d\u8a08\u6280\u8853\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u5f9e\u53e6\u4e00\u500b\u985e\u5225\u7e7c\u627f\u4e0b\u4f86\uff0c\u4ee5\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u3002<\/p>\n

TypeScript \u7684\u7e7c\u627f\u662f\u57fa\u65bc JavaScript \u7684\u539f\u578b\u7e7c\u627f\u6a21\u578b\uff0c\u5b83\u5141\u8a31\u958b\u767c\u8005\u5c07\u4e00\u500b\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u5f9e\u53e6\u4e00\u500b\u985e\u5225\u7e7c\u627f\u4e0b\u4f86\uff0c\u4ee5\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528 TypeScript \u7684\u7e7c\u627f<\/h2>\n

\u4f7f\u7528 TypeScript \u7684\u7e7c\u627f\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u4f7f\u7528 extends<\/code> \u95dc\u9375\u5b57\u5c31\u53ef\u4ee5\u5c07\u4e00\u500b\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u5f9e\u53e6\u4e00\u500b\u985e\u5225\u7e7c\u627f\u4e0b\u4f86\u3002<\/p>\n

\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b Animal<\/code> \u985e\u5225\uff0c\u5b83\u6709\u4e00\u500b eat()<\/code> \u65b9\u6cd5\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 extends<\/code> \u95dc\u9375\u5b57\u5c07 Animal<\/code> \u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u7e7c\u627f\u5230 Dog<\/code> \u985e\u5225\u4e2d\uff1a<\/p>\n

\nclass Animal {\n    eat() {\n        console.log('I am eating');\n    }\n}\n\nclass Dog extends Animal {\n    bark() {\n        console.log('Woof!');\n    }\n}\n\nlet dog = new Dog();\ndog.eat(); \/\/ I am eating\ndog.bark(); \/\/ Woof!\n<\/pre>\n
\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 extends<\/code> \u95dc\u9375\u5b57\u5c07 Animal<\/code> \u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u7e7c\u627f\u5230 Dog<\/code> \u985e\u5225\u4e2d\uff0c\u56e0\u6b64 Dog<\/code> \u985e\u5225\u53ef\u4ee5\u4f7f\u7528 Animal<\/code> \u985e\u5225\u7684 eat()<\/code> \u65b9\u6cd5\u3002<\/p>\n
\u7e7c\u627f\u7684\u512a\u9ede<\/h2>\n
\u4f7f\u7528\u7e7c\u627f\u53ef\u4ee5\u5927\u5927\u6e1b\u5c11\u958b\u767c\u8005\u7684\u5de5\u4f5c\u91cf\uff0c\u56e0\u70ba\u958b\u767c\u8005\u53ef\u4ee5\u5c07\u4e00\u500b\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u5f9e\u53e6\u4e00\u500b\u985e\u5225\u7e7c\u627f\u4e0b\u4f86\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u5beb\u4e00\u6b21\u3002<\/p>\n
\u6b64\u5916\uff0c\u4f7f\u7528\u7e7c\u627f\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5f0f\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\uff0c\u56e0\u70ba\u958b\u767c\u8005\u53ef\u4ee5\u5c07\u4e00\u500b\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u5f9e\u53e6\u4e00\u500b\u985e\u5225\u7e7c\u627f\u4e0b\u4f86\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u5beb\u4e00\u6b21\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
TypeScript \u7684\u7e7c\u627f\u662f\u57fa\u65bc JavaScript \u7684\u539f\u578b\u7e7c\u627f\u6a21\u578b\uff0c\u5b83\u5141\u8a31\u958b\u767c\u8005\u5c07\u4e00\u500b\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u5f9e\u53e6\u4e00\u500b\u985e\u5225\u7e7c\u627f\u4e0b\u4f86\uff0c\u4ee5\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u3002\u4f7f\u7528\u7e7c\u627f\u53ef\u4ee5\u5927\u5927\u6e1b\u5c11\u958b\u767c\u8005\u7684\u5de5\u4f5c\u91cf\uff0c\u4e26\u4e14\u63d0\u9ad8\u7a0b\u5f0f\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n
TypeScript \u7684\u7e7c\u627f\u662f\u4e00\u7a2e\u975e\u5e38\u6709\u7528\u7684\u7a0b\u5f0f\u8a2d\u8a08\u6280\u8853\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u5f9e\u53e6\u4e00\u500b\u985e\u5225\u7e7c\u627f\u4e0b\u4f86\uff0c\u4ee5\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u3002\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\u4f86\u6e1b\u5c11\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\uff0c\u90a3\u9ebc TypeScript \u7684\u7e7c\u627f\u53ef\u80fd\u662f\u4f60\u7684\u6700\u4f73\u9078\u64c7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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