{"id":5669,"date":"2023-01-06T14:29:23","date_gmt":"2023-01-06T06:29:23","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5669"},"modified":"2023-01-06T14:29:23","modified_gmt":"2023-01-06T06:29:23","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8react-js%e4%b8%ad%e7%9a%84reactlistmap","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/react-js\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8react-js%e4%b8%ad%e7%9a%84reactlistmap\/","title":{"rendered":"\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528React.JS\u4e2d\u7684ReactListMap"},"content":{"rendered":"

<\/p>\n

\u4f7f\u7528 React.JS \u7684 React List \u7684\u6620\u5c04(map)<\/h1>\n

React.JS \u662f\u4e00\u500b\u7531 Facebook \u6240\u958b\u767c\u7684 JavaScript \u51fd\u5f0f\u5eab\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5efa\u7acb\u4e92\u52d5\u5f0f\u7684\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u3002React List \u7684\u6620\u5c04(map) \u662f React.JS \u4e2d\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u9663\u5217\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u90fd\u8f49\u63db\u6210\u53e6\u4e00\u500b\u9663\u5217\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c07\u8f49\u63db\u5f8c\u7684\u9663\u5217\u4e2d\u7684\u5143\u7d20\u653e\u5165 React List \u4e2d\u3002<\/p>\n

<\/p>\n

React List \u7684\u6620\u5c04(map) \u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u9663\u5217\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u90fd\u8f49\u63db\u6210\u53e6\u4e00\u500b\u9663\u5217\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c07\u8f49\u63db\u5f8c\u7684\u9663\u5217\u4e2d\u7684\u5143\u7d20\u653e\u5165 React List \u4e2d\u3002\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u9663\u5217\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u90fd\u8f49\u63db\u6210\u53e6\u4e00\u500b\u9663\u5217\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c07\u8f49\u63db\u5f8c\u7684\u9663\u5217\u4e2d\u7684\u5143\u7d20\u653e\u5165 React List \u4e2d\u3002<\/p>\n

\u4f7f\u7528 React List \u7684\u6620\u5c04(map) \u7684\u7bc4\u4f8b<\/h2>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 React List \u7684\u6620\u5c04(map) \u7684\u7bc4\u4f8b\uff1a<\/p>\n

\nconst numbers = [1, 2, 3, 4, 5];\n\nconst doubled = numbers.map((number) => number * 2);\n\nconsole.log(doubled);\n\/\/ Output: [2, 4, 6, 8, 10]\n<\/pre>\n
\u5728\u4e0a\u9762\u7684\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 React List \u7684\u6620\u5c04(map) \u529f\u80fd\u5c07 numbers \u9663\u5217\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u90fd\u4e58\u4ee5 2\uff0c\u4e26\u5c07\u7d50\u679c\u653e\u5165 doubled \u9663\u5217\u4e2d\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
React List \u7684\u6620\u5c04(map) \u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u9663\u5217\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u90fd\u8f49\u63db\u6210\u53e6\u4e00\u500b\u9663\u5217\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c07\u8f49\u63db\u5f8c\u7684\u9663\u5217\u4e2d\u7684\u5143\u7d20\u653e\u5165 React List \u4e2d\u3002\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4e00\u500b\u9663\u5217\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u90fd\u8f49\u63db\u6210\u53e6\u4e00\u500b\u9663\u5217\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c07\u8f49\u63db\u5f8c\u7684\u9663\u5217\u4e2d\u7684\u5143\u7d20\u653e\u5165 React List \u4e2d\u3002\u9019\u500b\u529f\u80fd\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u5bb9\u6613\u5730\u5c07\u8cc7\u6599\u8f49\u63db\u6210 React List \u4e2d\u7684\u5143\u7d20\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u5feb\u901f\u5730\u5efa\u7acb\u4e92\u52d5\u5f0f\u7684\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528React.JS\u4e2d\u7684ReactListMap\uff0c\u8a73\u7d30\u89e3\u91cb\u4e86ReactListMap\u7684\u529f\u80fd\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u5efa\u7acb\u53ef\u91cd\u8907\u4f7f\u7528\u7684\u6e05\u55ae\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":[184,183],"tags":[182,181],"class_list":["post-5669","post","type-post","status-publish","format-standard","hentry","category-react","category-react-js","tag-react","tag-react-js"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1tr","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5669","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=5669"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5669\/revisions"}],"predecessor-version":[{"id":5670,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5669\/revisions\/5670"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5669"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5669"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5669"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}