{"id":3102,"date":"2024-11-10T11:26:21","date_gmt":"2024-11-10T03:26:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3102\/"},"modified":"2024-11-10T11:26:21","modified_gmt":"2024-11-10T03:26:21","slug":"typescript%e5%ae%9e%e6%88%98%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3102\/","title":{"rendered":"typescript\u5b9e\u6218\u6280\u5de7"},"content":{"rendered":"<blockquote><p>\n  \u4ee5\u4e0b\u662f typescript \u5b9e\u6218\u6280\u5de7\uff1a\u7c7b\u578b\u63a8\u65ad\uff1atypescript \u81ea\u52a8\u63a8\u65ad\u53d8\u91cf\u7c7b\u578b\uff0c\u7b80\u5316\u4ee3\u7801\u7f16\u5199\u3002\u7c7b\u578b\u522b\u540d\uff1a\u521b\u5efa\u53ef\u91cd\u7528\u7684\u7c7b\u578b\uff0c\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u3002\u63a5\u53e3\uff1a\u5b9a\u4e49\u5bf9\u8c61\u7c7b\u578b\uff0c\u786e\u4fdd\u4ee3\u7801\u5065\u58ee\u6027\u548c\u4e00\u81f4\u6027\u3002\u7c7b\u578b\u4fdd\u62a4\uff1a\u68c0\u67e5\u503c\u7684\u7c7b\u578b\uff0c\u5b89\u5168\u5730\u8bbf\u95ee\u5c5e\u6027\u6216\u8c03\u7528\u65b9\u6cd5\u3002\u6cdb\u578b\uff1a\u521b\u5efa\u53ef\u7528\u4e8e\u4e0d\u540c\u7c7b\u578b\u6570\u636e\u7684\u51fd\u6570\u548c\u7c7b\u3002\u88c5\u9970\u5668\uff1a\u589e\u5f3a\u7c7b\u7684\u884c\u4e3a\uff0c\u65e0\u9700\u4fee\u6539\u6e90\u4ee3\u7801\u3002\u5f02\u5e38\u5904\u7406\uff1a\u63d0\u4f9b\u66f4\u597d\u7684\u7c7b\u578b\u652f\u6301\u3002\u4f7f\u7528 lint \u5de5\u5177\u4fdd\u6301\u4ee3\u7801\u8d28\u91cf\u3002\u7f16\u5199\u6d4b\u8bd5\u786e\u4fdd\u4ee3\u7801\u6b63\u786e\u6027\u3002\u9605\u8bfb typescript \u6587\u6863\u6df1\u5165\u4e86\u89e3\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/07\/2024110723430255648.jpg\" class=\"aligncenter\" title=\"typescript\u5b9e\u6218\u6280\u5de7\u63d2\u56fe\" alt=\"typescript\u5b9e\u6218\u6280\u5de7\u63d2\u56fe\" \/><\/p>\n<p><strong>TypeScript \u5b9e\u6218\u6280\u5de7<\/strong><\/p>\n<p>TypeScript \u662f\u4e00\u79cd\u6d41\u884c\u7684 JavaScript \u8d85\u96c6\uff0c\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u7f16\u5199\u66f4\u5065\u58ee\u3001\u66f4\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b TypeScript \u5b9e\u6218\u6280\u5de7\uff0c\u53ef\u5e2e\u52a9\u60a8\u63d0\u5347\u5f00\u53d1\u4f53\u9a8c\uff1a<\/p>\n<p><strong>\u7c7b\u578b\u63a8\u65ad<\/strong><\/p>\n<p>TypeScript \u53ef\u4ee5\u81ea\u52a8\u63a8\u65ad\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u4ece\u800c\u7b80\u5316\u4ee3\u7801\u7f16\u5199\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>let name = \"John\"; \/\/ TypeScript \u63a8\u65ad name \u4e3a string \u7c7b\u578b<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u7c7b\u578b\u522b\u540d<\/strong><\/p>\n<p>\u4f7f\u7528\u7c7b\u578b\u522b\u540d\u53ef\u4ee5\u521b\u5efa\u53ef\u91cd\u7528\u7684\u7c7b\u578b\uff0c\u4f7f\u4ee3\u7801\u66f4\u6613\u8bfb\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>type User = {\n  name: string;\n  age: number;\n};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u63a5\u53e3<\/strong><\/p>\n<p>\u63a5\u53e3\u5b9a\u4e49\u5bf9\u8c61\u7c7b\u578b\uff0c\u6709\u52a9\u4e8e\u786e\u4fdd\u4ee3\u7801\u7684\u5065\u58ee\u6027\u548c\u4e00\u81f4\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>interface User {\n  name: string;\n  age: number;\n\n  greet(): void; \/\/ \u63a5\u53e3\u53ef\u4ee5\u5b9a\u4e49\u65b9\u6cd5\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u7c7b\u578b\u4fdd\u62a4<\/strong><\/p>\n<p>\u7c7b\u578b\u4fdd\u62a4\u53ef\u4ee5\u68c0\u67e5\u503c\u7684\u7c7b\u578b\uff0c\u4ee5\u4fbf\u5b89\u5168\u5730\u8bbf\u95ee\u5c5e\u6027\u6216\u8c03\u7528\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>if (user instanceof User) {\n  \/\/ \u7528\u6237\u662f User \u7c7b\u578b\u7684\uff0c\u53ef\u4ee5\u5b89\u5168\u5730\u8bbf\u95ee\u5176\u5c5e\u6027\n  console.log(user.name);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6cdb\u578b<\/strong><\/p>\n<p>\u6cdb\u578b\u5141\u8bb8\u521b\u5efa\u53ef\u7528\u4e8e\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u7684\u51fd\u6570\u548c\u7c7b\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>function map&lt;T&gt;(array: T[], callback: (item: T) =&gt; T): T[] {\n  \/\/ ...\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u88c5\u9970\u5668<\/strong><\/p>\n<p>\u88c5\u9970\u5668\u7528\u4e8e\u589e\u5f3a\u7c7b\u7684\u884c\u4e3a\uff0c\u800c\u65e0\u9700\u4fee\u6539\u5176\u6e90\u4ee3\u7801\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>@log\nclass User {\n  \/\/ ...\n}\n\nfunction log(target: any) {\n  \/\/ ...\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5f02\u5e38\u5904\u7406<\/strong><\/p>\n<p>TypeScript \u4e2d\u7684\u5f02\u5e38\u5904\u7406\u7c7b\u4f3c\u4e8e JavaScript\uff0c\u4f46\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u7c7b\u578b\u652f\u6301\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>try {\n  \/\/ ...\n} catch (e: Error) {\n  \/\/ ...\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5176\u4ed6\u6280\u5de7<\/strong><\/p>\n<ul>\n<li> <strong>\u4f7f\u7528 lint \u5de5\u5177<\/strong>\uff0c\u5982 ESLint\uff0c\u4ee5\u4fdd\u6301\u4ee3\u7801\u98ce\u683c\u548c\u8d28\u91cf\u3002<\/li>\n<li> <strong>\u7f16\u5199\u6d4b\u8bd5<\/strong>\u4ee5\u786e\u4fdd\u4ee3\u7801\u7684\u6b63\u786e\u6027\u3002<\/li>\n<li> <strong>\u9605\u8bfb TypeScript \u6587\u6863<\/strong>\u4ee5\u83b7\u5f97\u66f4\u6df1\u5165\u7684\u4e86\u89e3\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5b9e\u6218\u6280\u5de7\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u4e0b\u662f typescript \u5b9e\u6218\u6280\u5de7\uff1a\u7c7b\u578b\u63a8\u65ad\uff1atypescript \u81ea\u52a8\u63a8\u65ad\u53d8\u91cf\u7c7b\u578b\uff0c\u7b80\u5316\u4ee3\u7801\u7f16\u5199\u3002\u7c7b\u578b\u522b\u540d\uff1a\u521b\u5efa\u53ef\u91cd\u7528\u7684\u7c7b\u578b\uff0c\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u3002\u63a5\u53e3\uff1a\u5b9a\u4e49\u5bf9\u8c61\u7c7b\u578b\uff0c\u786e\u4fdd\u4ee3\u7801\u5065\u58ee\u6027\u548c\u4e00\u81f4\u6027\u3002\u7c7b\u578b\u4fdd\u62a4\uff1a\u68c0\u67e5\u503c\u7684\u7c7b\u578b\uff0c\u5b89\u5168\u5730\u8bbf\u95ee\u5c5e\u6027\u6216\u8c03\u7528\u65b9\u6cd5\u3002\u6cdb\u578b\uff1a\u521b\u5efa\u53ef\u7528\u4e8e\u4e0d\u540c\u7c7b\u578b\u6570\u636e\u7684\u51fd\u6570\u548c\u7c7b\u3002\u88c5\u9970\u5668\uff1a\u589e\u5f3a\u7c7b\u7684\u884c\u4e3a\uff0c\u65e0\u9700\u4fee\u6539\u6e90\u4ee3\u7801\u3002\u5f02\u5e38\u5904\u7406\uff1a\u63d0\u4f9b\u66f4\u597d\u7684\u7c7b\u578b\u652f\u6301\u3002\u4f7f\u7528 lint \u5de5\u5177\u4fdd\u6301\u4ee3\u7801\u8d28\u91cf\u3002\u7f16\u5199\u6d4b\u8bd5\u786e\u4fdd\u4ee3\u7801\u6b63\u786e\u6027\u3002\u9605\u8bfb typescript \u6587\u6863\u6df1\u5165\u4e86\u89e3\u3002 TypeScript \u5b9e\u6218\u6280\u5de7 TypeScript \u662f\u4e00\u79cd\u6d41\u884c\u7684 JavaScript \u8d85\u96c6\uff0c\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u7f16\u5199\u66f4\u5065\u58ee\u3001\u66f4\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b TypeScript \u5b9e\u6218\u6280\u5de7\uff0c\u53ef\u5e2e\u52a9\u60a8\u63d0\u5347\u5f00\u53d1\u4f53\u9a8c\uff1a \u7c7b\u578b\u63a8\u65ad TypeScript \u53ef\u4ee5\u81ea\u52a8\u63a8\u65ad\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u4ece\u800c\u7b80\u5316\u4ee3\u7801\u7f16\u5199\u3002\u4f8b\u5982\uff1a let name = &#8220;John&#8221;; \/\/ TypeScript \u63a8\u65ad name \u4e3a string \u7c7b\u578b \u767b\u5f55\u540e\u590d\u5236 \u7c7b\u578b\u522b\u540d \u4f7f\u7528\u7c7b\u578b\u522b\u540d\u53ef\u4ee5\u521b\u5efa\u53ef\u91cd\u7528\u7684\u7c7b\u578b\uff0c\u4f7f\u4ee3\u7801\u66f4\u6613\u8bfb\u3002\u4f8b\u5982\uff1a type User = { name: string; age: number; }; \u767b\u5f55\u540e\u590d\u5236 \u63a5\u53e3 \u63a5\u53e3\u5b9a\u4e49\u5bf9\u8c61\u7c7b\u578b\uff0c\u6709\u52a9\u4e8e\u786e\u4fdd\u4ee3\u7801\u7684\u5065\u58ee\u6027\u548c\u4e00\u81f4\u6027\u3002\u4f8b\u5982\uff1a interface User { name: string; age: number; greet(): void; \/\/ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3102","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3102"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3102\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}