{"id":5172,"date":"2023-01-05T12:07:32","date_gmt":"2023-01-05T04:07:32","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5172"},"modified":"2023-01-05T12:07:32","modified_gmt":"2023-01-05T04:07:32","slug":"%e5%ad%b8%e7%bf%92typescript%e4%b8%ad%e6%95%b8%e7%b5%84%e7%9a%84%e5%a1%ab%e5%85%85arrayfill","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%a1%ab%e5%85%85arrayfill\/","title":{"rendered":"\u5b78\u7fd2TypeScript\u4e2d\u6578\u7d44\u7684\u586b\u5145(ArrayFill)"},"content":{"rendered":"

<\/p>\n

TypeScript \u6578\u7d44\u7684\u586b\u5145(Array Fill)<\/h1>\n

TypeScript \u662f\u4e00\u7a2e JavaScript \u7684\u8d85\u96c6\uff0c\u5b83\u63d0\u4f9b\u4e86\u985e\u578b\u6aa2\u67e5\u548c\u975c\u614b\u5206\u6790\u529f\u80fd\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u652f\u6301\u958b\u767c\u8005\u958b\u767c\u5927\u578b\u61c9\u7528\u7a0b\u5e8f\u3002\u5728 TypeScript \u4e2d\uff0c\u6578\u7d44\u7684\u586b\u5145(Array Fill)\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5feb\u901f\u586b\u5145\u6578\u7d44\u4e2d\u7684\u5143\u7d20\uff0c\u4ee5\u6eff\u8db3\u958b\u767c\u9700\u6c42\u3002<\/p>\n

<\/p>\n

\u4ec0\u9ebc\u662f\u6578\u7d44\u7684\u586b\u5145(Array Fill)<\/h2>\n

\u6578\u7d44\u7684\u586b\u5145(Array Fill)\u662f\u6307\u5c07\u4e00\u500b\u503c\u586b\u5145\u5230\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\uff0c\u4ee5\u4fbf\u5feb\u901f\u586b\u5145\u6578\u7d44\u4e2d\u7684\u5143\u7d20\u3002\u5728 TypeScript \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Array.fill()<\/code> \u65b9\u6cd5\u4f86\u5be6\u73fe\u6578\u7d44\u7684\u586b\u5145(Array Fill)\u3002<\/p>\n

\u4f7f\u7528 Array.fill()<\/code> \u65b9\u6cd5<\/h2>\n

Array.fill()<\/code> \u65b9\u6cd5\u63a5\u53d7\u4e09\u500b\u53c3\u6578\uff1a\u8981\u586b\u5145\u7684\u503c\u3001\u958b\u59cb\u586b\u5145\u7684\u7d22\u5f15\u503c\u3001\u586b\u5145\u7684\u7d50\u675f\u7d22\u5f15\u503c\u3002<\/p>\n

array.fill(value, start, end)\n<\/code><\/pre>\n
    \n
  • value<\/code>\uff1a\u8981\u586b\u5145\u7684\u503c<\/li>\n
  • start<\/code>\uff1a\u958b\u59cb\u586b\u5145\u7684\u7d22\u5f15\u503c\uff0c\u9ed8\u8a8d\u70ba 0<\/li>\n
  • end<\/code>\uff1a\u586b\u5145\u7684\u7d50\u675f\u7d22\u5f15\u503c\uff0c\u9ed8\u8a8d\u70ba\u6578\u7d44\u7684\u9577\u5ea6<\/li>\n<\/ul>\n
    \u7bc4\u4f8b<\/h3>\n
    \u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u9577\u5ea6\u70ba 10 \u7684\u6578\u7d44\uff0c\u6211\u5011\u60f3\u8981\u5c07\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u90fd\u586b\u5145\u70ba 0\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n
    let array = new Array(10);\narray.fill(0);\nconsole.log(array); \/\/ [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]\n<\/code><\/pre>\n
    \u5982\u679c\u6211\u5011\u60f3\u8981\u5c07\u6578\u7d44\u4e2d\u7684\u7b2c 3 \u5230\u7b2c 6 \u500b\u5143\u7d20\u90fd\u586b\u5145\u70ba 1\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n
    let array = new Array(10);\narray.fill(1, 2, 6);\nconsole.log(array); \/\/ [undefined, undefined, 1, 1, 1, 1, undefined, undefined, undefined, undefined]\n<\/code><\/pre>\n
    \u7e3d\u7d50<\/h2>\n
    \u5728 TypeScript \u4e2d\uff0c\u6578\u7d44\u7684\u586b\u5145(Array Fill)\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5feb\u901f\u586b\u5145\u6578\u7d44\u4e2d\u7684\u5143\u7d20\uff0c\u4ee5\u6eff\u8db3\u958b\u767c\u9700\u6c42\u3002\u53ef\u4ee5\u4f7f\u7528 Array.fill()<\/code> \u65b9\u6cd5\u4f86\u5be6\u73fe\u6578\u7d44\u7684\u586b\u5145(Array Fill)\uff0c\u5b83\u63a5\u53d7\u4e09\u500b\u53c3\u6578\uff1a\u8981\u586b\u5145\u7684\u503c\u3001\u958b\u59cb\u586b\u5145\u7684\u7d22\u5f15\u503c\u3001\u586b\u5145\u7684\u7d50\u675f\u7d22\u5f15\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39TypeScript\u4e2d\u6578\u7d44\u7684\u586b\u5145(ArrayFill)\u529f\u80fd\uff0c\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528fill()\u65b9\u6cd5\u4f86\u586b\u5145\u6578\u7d44\uff0c\u4ee5\u53cafill()\u65b9\u6cd5\u7684\u53c3\u6578\u548c\u8fd4\u56de\u503c\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-5172","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\/pcFK27-1lq","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5172","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=5172"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5172\/revisions"}],"predecessor-version":[{"id":5173,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5172\/revisions\/5173"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}