{"id":5020,"date":"2023-01-05T11:39:26","date_gmt":"2023-01-05T03:39:26","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5020"},"modified":"2023-01-05T11:39:26","modified_gmt":"2023-01-05T03:39:26","slug":"%e5%ad%b8%e7%bf%92typescript%e4%b8%ad%e6%95%b8%e7%b5%84%e7%9a%84%e5%b8%b8%e7%94%a8%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%ad%b8%e7%bf%92typescript%e4%b8%ad%e6%95%b8%e7%b5%84%e7%9a%84%e5%b8%b8%e7%94%a8%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u5b78\u7fd2TypeScript\u4e2d\u6578\u7d44\u7684\u5e38\u7528\u65b9\u6cd5"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, Array Methods\"><\/p>\n<h1>TypeScript \u6578\u7d44\u7684\u5e38\u7528\u65b9\u6cd5<\/h1>\n<p>TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7279\u6027\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u8f15\u9b06\u5730\u958b\u767c\u51fa\u66f4\u512a\u8cea\u7684\u7a0b\u5f0f\u78bc\u3002\u5728 TypeScript \u4e2d\uff0c\u6578\u7d44\u4e5f\u6709\u8a31\u591a\u7684\u5e38\u7528\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u64cd\u4f5c\u6578\u7d44\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u5728 TypeScript \u4e2d\uff0c\u6709\u8a31\u591a\u7684\u6578\u7d44\u65b9\u6cd5\u53ef\u4ee5\u4f7f\u7528\uff0c\u4f8b\u5982\uff1a<strong style=\"color: #0099cc;\"><code>map()<\/code><\/strong>\u3001<strong style=\"color: #0099cc;\"><code>filter()<\/code><\/strong>\u3001<strong style=\"color: #0099cc;\"><code>reduce()<\/code><\/strong>\u3001<strong style=\"color: #0099cc;\"><code>forEach()<\/code><\/strong> \u7b49\u7b49\u3002<\/p>\n<h2>\u4f7f\u7528 <code>map()<\/code> \u65b9\u6cd5<\/h2>\n<p><code>map()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u57f7\u884c\u6307\u5b9a\u7684\u51fd\u6578\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u65b0\u7684\u6578\u7d44\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>map()<\/code> \u65b9\u6cd5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u4e58\u4ee5 2\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet numbers = [1, 2, 3, 4, 5];\nlet doubledNumbers = numbers.map(x => x * 2);\n\nconsole.log(doubledNumbers); \/\/ [2, 4, 6, 8, 10]\n<\/pre>\n<h2>\u4f7f\u7528 <code>filter()<\/code> \u65b9\u6cd5<\/h2>\n<p><code>filter()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u57f7\u884c\u6307\u5b9a\u7684\u51fd\u6578\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u65b0\u7684\u6578\u7d44\uff0c\u5176\u4e2d\u53ea\u5305\u542b\u7b26\u5408\u689d\u4ef6\u7684\u5143\u7d20\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>filter()<\/code> \u65b9\u6cd5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u9032\u884c\u7be9\u9078\uff0c\u53ea\u4fdd\u7559\u5927\u65bc 3 \u7684\u5143\u7d20\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet numbers = [1, 2, 3, 4, 5];\nlet filteredNumbers = numbers.filter(x => x > 3);\n\nconsole.log(filteredNumbers); \/\/ [4, 5]\n<\/pre>\n<h2>\u4f7f\u7528 <code>reduce()<\/code> \u65b9\u6cd5<\/h2>\n<p><code>reduce()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u57f7\u884c\u6307\u5b9a\u7684\u51fd\u6578\uff0c\u4e26\u5c07\u7d50\u679c\u7d2f\u52a0\u5230\u4e00\u500b\u7d2f\u8a08\u503c\u4e2d\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>reduce()<\/code> \u65b9\u6cd5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u6c42\u548c\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet numbers = [1, 2, 3, 4, 5];\nlet sum = numbers.reduce((acc, curr) => acc + curr);\n\nconsole.log(sum); \/\/ 15\n<\/pre>\n<h2>\u4f7f\u7528 <code>forEach()<\/code> \u65b9\u6cd5<\/h2>\n<p><code>forEach()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u57f7\u884c\u6307\u5b9a\u7684\u51fd\u6578\uff0c\u4f46\u4e0d\u6703\u8fd4\u56de\u4efb\u4f55\u503c\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>forEach()<\/code> \u65b9\u6cd5\u5c0d\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u57f7\u884c\u6307\u5b9a\u7684\u51fd\u6578\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet numbers = [1, 2, 3, 4, 5];\nnumbers.forEach(x => console.log(x));\n\n\/\/ 1\n\/\/ 2\n\/\/ 3\n\/\/ 4\n\/\/ 5\n<\/pre>\n<h2>\u7e3d\u7d50<\/h2>\n<p>TypeScript \u63d0\u4f9b\u4e86\u8a31\u591a\u7684\u6578\u7d44\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u64cd\u4f5c\u6578\u7d44\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u4ecb\u7d39\u4e86 <code>map()<\/code>\u3001<code>filter()<\/code>\u3001<code>reduce()<\/code> \u548c <code>forEach()<\/code> \u7b49\u5e38\u7528\u7684\u6578\u7d44\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u4e86\u7c21\u55ae\u7684\u7bc4\u4f8b\u4f86\u8aaa\u660e\u5982\u4f55\u4f7f\u7528\u9019\u4e9b\u65b9\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39TypeScript\u4e2d\u6578\u7d44\u7684\u5e38\u7528\u65b9\u6cd5\uff0c\u5305\u62ecpush()\u3001pop()\u3001shift()\u3001unshift()\u3001splice()\u3001sort()\u3001reverse()\u7b49\uff0c\u8b93\u4f60\u66f4\u52a0\u4e86\u89e3\u6578\u7d44\u7684\u64cd\u4f5c\u65b9\u5f0f\uff0c\u66f4\u6709\u6548\u5730\u4f7f\u7528\u5b83\u5011\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[187],"tags":[186],"class_list":["post-5020","post","type-post","status-publish","format-standard","hentry","category-typescript","tag-typescript"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1iY","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=5020"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5020\/revisions"}],"predecessor-version":[{"id":5021,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5020\/revisions\/5021"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}