{"id":5550,"date":"2023-01-05T13:04:55","date_gmt":"2023-01-05T05:04:55","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5550"},"modified":"2023-01-05T13:04:55","modified_gmt":"2023-01-05T05:04:55","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e5%88%a4%e6%96%b7map%e5%b0%8d%e8%b1%a1%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e6%9f%90%e5%80%8b%e9%8d%b5%e5%90%8d","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescriptmap%e5%88%a4%e6%96%b7map%e5%b0%8d%e8%b1%a1%e6%98%af%e5%90%a6%e5%8c%85%e5%90%ab%e6%9f%90%e5%80%8b%e9%8d%b5%e5%90%8d\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528TypeScriptMap\u5224\u65b7Map\u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u9375\u540d"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Map, hasKey\"><\/p>\n<h1>\u4f7f\u7528 TypeScript Map \u5224\u65b7 Map \u5bf9\u8c61\u662f\u5426\u5305\u542b\u67d0\u4e2a\u952e\u540d(hasKey)<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7279\u6027\uff0c\u4f8b\u5982\u985e\u578b\u6aa2\u67e5\u548c\u985e\u578b\u5b89\u5168\u6027\u3002TypeScript \u4e2d\u7684 Map \u662f\u4e00\u7a2e\u985e\u4f3c\u65bc JavaScript \u5c0d\u8c61\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5b83\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u9375\u503c\u5c0d\u3002\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Map \u7684 hasKey \u65b9\u6cd5\u4f86\u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u9375\u540d\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4f86\u5275\u5efa\u4e00\u500b Map \u5c0d\u8c61\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet myMap = new Map();\n<\/pre>\n<p>\u63a5\u4e0b\u4f86\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4f86\u5411 Map \u5c0d\u8c61\u4e2d\u6dfb\u52a0\u9375\u503c\u5c0d\uff1a<\/p>\n<pre class=\"brush: typescript\">\nmyMap.set(\"name\", \"John\");\nmyMap.set(\"age\", 30);\n<\/pre>\n<p>\u73fe\u5728\uff0c\u53ef\u4ee5\u4f7f\u7528 Map \u7684 hasKey \u65b9\u6cd5\u4f86\u5224\u65b7 Map \u5c0d\u8c61\u662f\u5426\u5305\u542b\u67d0\u500b\u9375\u540d\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet hasName = myMap.hasKey(\"name\"); 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