{"id":4872,"date":"2023-01-05T11:09:43","date_gmt":"2023-01-05T03:09:43","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4872"},"modified":"2023-01-05T11:09:43","modified_gmt":"2023-01-05T03:09:43","slug":"%e4%ba%86%e8%a7%a3typescript%e4%b8%ad%e7%9a%84%e9%a1%9e%e7%9a%84%e7%b9%bc%e6%89%bfclassinheritance","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e4%b8%ad%e7%9a%84%e9%a1%9e%e7%9a%84%e7%b9%bc%e6%89%bfclassinheritance\/","title":{"rendered":"\u4e86\u89e3TypeScript\u4e2d\u7684\u985e\u7684\u7e7c\u627f(ClassInheritance)"},"content":{"rendered":"

<\/p>\n

TypeScript \u4e2d\u7684\u985e\u7684\u7e7c\u627f<\/h1>\n

TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u652f\u6301\u985e\u7684\u7e7c\u627f\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u69cb\u5efa\u5927\u578b\u61c9\u7528\u7a0b\u5e8f\u3002\u672c\u6587\u5c07\u4ecb\u7d39 TypeScript \u4e2d\u7684\u985e\u7684\u7e7c\u627f\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u69cb\u5efa\u5927\u578b\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u985e\u7684\u7e7c\u627f\uff1f<\/h2>\n

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TypeScript \u4e2d\u7684\u985e\u7684\u7e7c\u627f<\/h2>\n

TypeScript \u652f\u6301\u985e\u7684\u7e7c\u627f\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u69cb\u5efa\u5927\u578b\u61c9\u7528\u7a0b\u5e8f\u3002TypeScript \u4e2d\u7684\u985e\u7684\u7e7c\u627f\u662f\u57fa\u65bc JavaScript \u7684\u539f\u578b\u7e7c\u627f\u6a5f\u5236\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u985e\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u7e7c\u627f\u5230\u53e6\u4e00\u500b\u985e\u4e2d\u3002<\/p>\n

TypeScript \u4e2d\u7684\u985e\u7684\u7e7c\u627f\u53ef\u4ee5\u4f7f\u7528 extends<\/code> \u95dc\u9375\u5b57\u4f86\u5be6\u73fe\uff0c\u4e0b\u9762\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n

\nclass Animal {\n    name: string;\n    constructor(name: string) {\n        this.name = name;\n    }\n    move(distanceInMeters: number = 0) {\n        console.log(`{this.name} moved<\/span>{distanceInMeters}m.`);\n    }\n}\n\nclass Dog extends Animal {\n    bark() {\n        console.log('Woof! Woof!');\n    }\n}\n\nconst dog = new Dog('Max');\ndog.bark();\ndog.move(10);\ndog.bark();\n<\/pre>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b Animal<\/code> \u985e\uff0c\u5b83\u6709\u4e00\u500b name<\/code> \u5c6c\u6027\u548c\u4e00\u500b move<\/code> \u65b9\u6cd5\u3002\u7136\u5f8c\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b Dog<\/code> \u985e\uff0c\u5b83\u7e7c\u627f\u4e86 Animal<\/code> \u985e\uff0c\u4e26\u6dfb\u52a0\u4e86\u4e00\u500b bark<\/code> \u65b9\u6cd5\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
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