{"id":2550,"date":"2024-11-10T12:46:26","date_gmt":"2024-11-10T04:46:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/2550\/"},"modified":"2024-11-10T12:46:26","modified_gmt":"2024-11-10T04:46:26","slug":"javascript-%e9%97%ad%e5%8c%85%e5%88%9d%e5%ad%a6%e8%80%85%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/2550\/","title":{"rendered":"JavaScript \u95ed\u5305\u521d\u5b66\u8005\u6307\u5357"},"content":{"rendered":"

\"JavaScript<\/p>\n

\u5728 javascript \u4e2d\uff0c\u95ed\u5305\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u5373\u4f7f\u5728\u7236\u51fd\u6570\u5b8c\u6210\u4e4b\u540e\uff0c\u5b83\u4ecd\u4fdd\u7559\u5bf9\u5176\u7236\u4e2d\u7684\u53d8\u91cf\u7684\u8bbf\u95ee\u3002\u8fd9\u79cd\u72ec\u7279\u7684\u884c\u4e3a\u5141\u8bb8\u51fd\u6570\u201c\u8bb0\u4f4f\u201d\u5b83\u4eec\u7684\u4e0a\u4e0b\u6587\uff0c\u4f7f\u5f97\u95ed\u5305\u5bf9\u4e8e\u7ba1\u7406\u79c1\u6709\u6570\u636e\u548c\u6784\u5efa\u590d\u6742\u4ee3\u7801\u975e\u5e38\u6709\u4ef7\u503c\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u4f7f\u7528\u95ed\u5305\uff1f<\/strong> <\/h2>\n

\u95ed\u5305\u5bf9\u4e8e\u521b\u5efa\u79c1\u6709\u53d8\u91cf\u548c\u5c01\u88c5\u903b\u8f91\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u5c06\u529f\u80fd\u5305\u88c5\u5728\u95ed\u5305\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4fdd\u62a4\u53d8\u91cf\u514d\u53d7\u5916\u90e8\u5e72\u6270\uff0c\u4fdd\u6301\u4ee3\u7801\u7684\u7ec4\u7ec7\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n

\u95ed\u5305\u793a\u4f8b\uff1a\u7b80\u5355\u8ba1\u6570\u5668<\/strong><\/p>\n

\u8fd9\u662f\u95ed\u5305\u7684\u5e38\u89c1\u7528\u6cd5\uff0c\u6211\u4eec\u6784\u5efa\u4e00\u4e2a\u4fdd\u7559\u79c1\u6709\u8ba1\u6570\u53d8\u91cf\u7684\u8ba1\u6570\u5668\u51fd\u6570\uff1a<\/p>\n

function makecounter() {\n    let count = 0;\n\n    return function() {\n        count++;\n        console.log(count);\n    };\n}\n\nlet counter = makecounter();\ncounter(); \/\/ logs: 1\ncounter(); \/\/ logs: 2\ncounter(); \/\/ logs: 3\n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6bcf\u6b21\u8c03\u7528 counter() \u65f6\uff0c\u5b83\u90fd\u4f1a\u8bbf\u95ee\u5e76\u9012\u589e\u79c1\u6709\u8ba1\u6570\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u53ea\u80fd\u5728 makecounter \u5185\u90e8\u8bbf\u95ee\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
\u771f\u5b9e\u793a\u4f8b\uff1a\u767b\u5f55\u7ba1\u7406\u5668<\/strong><\/p>\n
\u95ed\u5305\u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u573a\u666f\u4e5f\u5f88\u6709\u7528\uff0c\u6bd4\u5982\u7ba1\u7406\u7528\u6237\u767b\u5f55\u72b6\u6001\u3002\u8fd9\u662f\u4e00\u4e2a\u5177\u6709\u79c1\u6709\u72b6\u6001\u63a7\u5236\u7684\u767b\u5f55\u7ba1\u7406\u5668\uff1a<\/p>\n
function createLoginManager() {\n    let isLoggedIn = false;\n\n    return {\n        login: function() { isLoggedIn = true; },\n        logout: function() { isLoggedIn = false; },\n        isLoggedIn: function() { return isLoggedIn; }\n    };\n}\n\nlet loginManager = createLoginManager();\nconsole.log(loginManager.isLoggedIn()); \/\/ false\nloginManager.login();\nconsole.log(loginManager.isLoggedIn()); \/\/ true\n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
isloggedin \u53d8\u91cf\u5c01\u88c5\u5728 createloginmanager \u4e2d\uff0c\u53ea\u80fd\u901a\u8fc7\u8fd4\u56de\u7684\u65b9\u6cd5\u8bbf\u95ee\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u786e\u4fdd\u767b\u5f55\u4fe1\u606f\u5b89\u5168\u4e14\u7ec4\u7ec7\u826f\u597d\u3002<\/p>\n
 \u7ed3\u8bba<\/strong> <\/h2>\n
\u95ed\u5305\u4e00\u5f00\u59cb\u53ef\u80fd\u770b\u8d77\u6765\u5f88\u68d8\u624b\uff0c\u4f46\u5b83\u4eec\u662f\u7ec4\u7ec7 javascript \u4ee3\u7801\u7684\u5f3a\u5927\u5de5\u5177\uff0c\u4f7f\u5176\u65e2\u5b89\u5168\u53c8\u53ef\u7ef4\u62a4\u3002<\/p>\n
\u8981\u901a\u8fc7\u5176\u4ed6\u793a\u4f8b\u548c\u89c1\u89e3\u63a2\u7d22\u6709\u5173 javascript \u95ed\u5305\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u67e5\u770b\u6211\u5728 medium \u4e0a\u7684\u5b8c\u6574\u6587\u7ae0\uff1a\u4ec0\u4e48\u662f javascript \u95ed\u5305\uff1f\u5b9e\u7528\u6307\u5357\u3002<\/p>\n
\u7f16\u7801\u6109\u5feb\uff01<\/p>\n
\u4ee5\u4e0a\u5c31\u662fJavaScript \u95ed\u5305\u521d\u5b66\u8005\u6307\u5357\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":"
\u5728 javascript \u4e2d\uff0c\u95ed\u5305\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u5373\u4f7f\u5728\u7236\u51fd\u6570\u5b8c\u6210\u4e4b\u540e\uff0c\u5b83\u4ecd\u4fdd\u7559\u5bf9\u5176\u7236\u4e2d\u7684\u53d8\u91cf\u7684\u8bbf\u95ee\u3002\u8fd9\u79cd\u72ec\u7279\u7684\u884c\u4e3a\u5141\u8bb8\u51fd\u6570\u201c\u8bb0\u4f4f\u201d\u5b83\u4eec\u7684\u4e0a\u4e0b\u6587\uff0c\u4f7f\u5f97\u95ed\u5305\u5bf9\u4e8e\u7ba1\u7406\u79c1\u6709\u6570\u636e\u548c\u6784\u5efa\u590d\u6742\u4ee3\u7801\u975e\u5e38\u6709\u4ef7\u503c\u3002 \u4e3a\u4ec0\u4e48\u4f7f\u7528\u95ed\u5305\uff1f \u95ed\u5305\u5bf9\u4e8e\u521b\u5efa\u79c1\u6709\u53d8\u91cf\u548c\u5c01\u88c5\u903b\u8f91\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u5c06\u529f\u80fd\u5305\u88c5\u5728\u95ed\u5305\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4fdd\u62a4\u53d8\u91cf\u514d\u53d7\u5916\u90e8\u5e72\u6270\uff0c\u4fdd\u6301\u4ee3\u7801\u7684\u7ec4\u7ec7\u6027\u548c\u5b89\u5168\u6027\u3002 \u95ed\u5305\u793a\u4f8b\uff1a\u7b80\u5355\u8ba1\u6570\u5668 \u8fd9\u662f\u95ed\u5305\u7684\u5e38\u89c1\u7528\u6cd5\uff0c\u6211\u4eec\u6784\u5efa\u4e00\u4e2a\u4fdd\u7559\u79c1\u6709\u8ba1\u6570\u53d8\u91cf\u7684\u8ba1\u6570\u5668\u51fd\u6570\uff1a function makecounter() { let count = 0; return function() { count++; console.log(count); }; } let counter = makecounter(); counter(); \/\/ logs: 1 counter(); \/\/ logs: 2 counter(); \/\/ logs: 3 \u767b\u5f55\u540e\u590d\u5236 \u6bcf\u6b21\u8c03\u7528 counter() \u65f6\uff0c\u5b83\u90fd\u4f1a\u8bbf\u95ee\u5e76\u9012\u589e\u79c1\u6709\u8ba1\u6570\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u53ea\u80fd\u5728 makecounter \u5185\u90e8\u8bbf\u95ee\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u771f\u5b9e\u793a\u4f8b\uff1a\u767b\u5f55\u7ba1\u7406\u5668 \u95ed\u5305\u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u573a\u666f\u4e5f\u5f88\u6709\u7528\uff0c\u6bd4\u5982\u7ba1\u7406\u7528\u6237\u767b\u5f55\u72b6\u6001\u3002\u8fd9\u662f\u4e00\u4e2a\u5177\u6709\u79c1\u6709\u72b6\u6001\u63a7\u5236\u7684\u767b\u5f55\u7ba1\u7406\u5668\uff1a function createLoginManager() { let isLoggedIn = false; return { […]<\/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-2550","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/2550","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=2550"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/2550\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=2550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=2550"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=2550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}