{"id":4802,"date":"2023-01-05T10:24:09","date_gmt":"2023-01-05T02:24:09","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4802"},"modified":"2023-01-05T10:24:09","modified_gmt":"2023-01-05T02:24:09","slug":"%e4%ba%86%e8%a7%a3typescript%e7%b9%bc%e6%89%bf%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5%e8%88%87%e6%87%89%e7%94%a8","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e7%b9%bc%e6%89%bf%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5%e8%88%87%e6%87%89%e7%94%a8\/","title":{"rendered":"\u4e86\u89e3TypeScript\u7e7c\u627f\u7684\u57fa\u672c\u6982\u5ff5\u8207\u61c9\u7528"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u7e7c\u627f, extends\"><\/p>\n<h1>TypeScript \u7e7c\u627f(extends) \u7684\u4f7f\u7528\u65b9\u6cd5<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u64c1\u6709 JavaScript \u7684\u6240\u6709\u529f\u80fd\uff0c\u4e26\u4e14\u63d0\u4f9b\u4e86\u985e\u5225\u7684\u6982\u5ff5\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u985e\u5225\u4f86\u5b9a\u7fa9\u7269\u4ef6\uff0c\u4e26\u4e14\u63d0\u4f9b\u4e86\u7e7c\u627f(extends)\u7684\u529f\u80fd\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u7684\u4f7f\u7528\u7e7c\u627f\u4f86\u5efa\u7acb\u7269\u4ef6\u7684\u7e7c\u627f\u95dc\u4fc2\u3002<\/p>\n<p><!--more--><\/p>\n<p>TypeScript \u7684\u7e7c\u627f(extends)\u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u8f15\u9b06\u7684\u5efa\u7acb\u7269\u4ef6\u7684\u7e7c\u627f\u95dc\u4fc2\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u5c07\u7269\u4ef6\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u7e7c\u627f\u5230\u5b50\u7269\u4ef6\u4e2d\uff0c\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7e7c\u627f\u7bc4\u4f8b\uff1a<\/p>\n<pre class=\"brush: typescript\">\nclass Animal {\n  name: string;\n  constructor(theName: string) {\n    this.name = theName;\n  }\n  move(distanceInMeters: number = 0) {\n    console.log(`<span class=\"katex math inline\">{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<p>\u5728\u4e0a\u9762\u7684\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b Animal \u985e\u5225\uff0c\u4e26\u4e14\u5b9a\u7fa9\u4e86\u4e00\u500b Dog \u985e\u5225\uff0c\u4e26\u4e14\u4f7f\u7528 extends \u4f86\u7e7c\u627f Animal \u985e\u5225\uff0c\u9019\u6a23 Dog \u985e\u5225\u5c31\u53ef\u4ee5\u7e7c\u627f Animal \u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\uff0c\u4e26\u4e14\u53ef\u4ee5\u5b9a\u7fa9\u81ea\u5df1\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\uff0c\u4f8b\u5982 Dog \u985e\u5225\u5b9a\u7fa9\u4e86 bark() \u65b9\u6cd5\uff0c\u9019\u6a23\u5c31\u53ef\u4ee5\u8b93 Dog \u985e\u5225\u7e7c\u627f Animal \u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\uff0c\u4e26\u4e14\u53ef\u4ee5\u5b9a\u7fa9\u81ea\u5df1\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<h2>TypeScript \u7e7c\u627f(extends) \u7684\u512a\u9ede<\/h2>\n<p>TypeScript 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\u7684\u7e7c\u627f(extends)\u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u8f15\u9b06\u7684\u5efa\u7acb\u7269\u4ef6\u7684\u7e7c\u627f\u95dc\u4fc2\uff0c\u4f46\u662f\u4e5f\u6709\u4e00\u4e9b\u7f3a\u9ede\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u7236\u985e\u5225\u548c\u5b50\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u6709\u91cd\u8907\u7684\u8a71\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5b50\u985e\u5225\u7684\u5c6c\u6027\u548c\u65b9\u6cd5\u88ab\u8986\u84cb\uff0c\u9019\u6a23\u53ef\u80fd\u6703\u5c0e\u81f4\u7a0b\u5f0f\u51fa\u932f\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>TypeScript 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