{"id":328,"date":"2025-11-30T15:19:05","date_gmt":"2025-11-30T07:19:05","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=328"},"modified":"2025-11-30T15:19:05","modified_gmt":"2025-11-30T07:19:05","slug":"document-cookie","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2025\/11\/30\/document-cookie\/","title":{"rendered":"document.cookie"},"content":{"rendered":"\n<p>\u4e0b\u9762\u7ed9\u4f60\u4e00\u4efd <strong>\u6700\u6e05\u6670\u3001\u6700\u5b9e\u7528\u7684 <code>document.cookie<\/code> \u4f7f\u7528\u8bf4\u660e<\/strong>\uff0c\u5305\u62ec\uff1a\u8bed\u6cd5\u3001\u8bfb\u5199\u65b9\u5f0f\u3001\u5e38\u89c1\u5751\u70b9\u3001\u5b89\u5168\u5c5e\u6027\uff08SameSite \/ HttpOnly \/ Secure\uff09\u3001\u4f8b\u5b50\u7b49\uff0c\u9002\u5408\u524d\u7aef\u5f00\u53d1\u5feb\u901f\u638c\u63e1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>1. \u4ec0\u4e48\u662f <code>document.cookie<\/code>\uff1f<\/strong><\/h1>\n\n\n\n<p><code>document.cookie<\/code> \u662f\u6d4f\u89c8\u5668 JavaScript \u7528\u6765 <strong>\u8bfb\u53d6\u548c\u8bbe\u7f6e Cookie<\/strong> \u7684\u63a5\u53e3\u3002<br>\u5b83\u53ea\u80fd\u5728\u5f53\u524d\u57df\u540d\uff08\u6216\u5141\u8bb8\u7684\u8def\u5f84\uff09\u4e0b\u64cd\u4f5c Cookie\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>2. \u8bfb\u53d6 Cookie<\/strong><\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconsole.log(document.cookie);\n\n<\/pre><\/div>\n\n\n<p>\u8fd4\u56de\u4e00\u4e2a <strong>\u5b57\u7b26\u4e32<\/strong>\uff0c\u683c\u5f0f\u7c7b\u4f3c\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nusername=Jack; theme=dark; token=xxxx\n\n<\/pre><\/div>\n\n\n<p>\u6ce8\u610f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ea\u80fd\u8bfb\u53d6 <strong>\u672a\u52a0 HttpOnly<\/strong> \u7684 Cookie<\/li>\n\n\n\n<li>HttpOnly Cookie\uff08\u5982\u767b\u5f55 token\uff09<strong>\u65e0\u6cd5\u88ab JS \u8bfb\u53d6<\/strong> \u2192 \u6d4f\u89c8\u5668\u5b89\u5168\u7b56\u7565<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>3. \u8bbe\u7f6e Cookie\uff08\u6838\u5fc3\uff09<\/strong><\/h1>\n\n\n\n<p>\u8bbe\u7f6e cookie \u7684\u65b9\u5f0f\u662f\u5411 <code>document.cookie<\/code> <strong>\u5199\u5165\u4e00\u6bb5 key=value \u5b57\u4e32<\/strong>\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ndocument.cookie = &quot;username=Jack&quot;;\n\n<\/pre><\/div>\n\n\n<p>\u6b64\u64cd\u4f5c\u4f1a <strong>\u6dfb\u52a0\u6216\u66f4\u65b0<\/strong> cookie\uff0c\u800c\u4e0d\u4f1a\u8986\u76d6\u5176\u4ed6 cookie\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>4. \u8bbe\u7f6e Cookie \u7684\u5c5e\u6027<\/strong><\/h1>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u4e3a cookie \u589e\u52a0\u5c5e\u6027\uff0c\u5982\u8fc7\u671f\u65f6\u95f4\u3001\u8def\u5f84\u3001\u57df\u540d\u3001\u5b89\u5168\u5c5e\u6027\u7b49\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ndocument.cookie = &quot;username=Jack; expires=Fri, 31 Dec 2025 23:59:59 GMT; path=\/; Secure; SameSite=Lax&quot;;\n\n<\/pre><\/div>\n\n\n<p>\u5e38\u7528\u5c5e\u6027\u8bf4\u660e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5c5e\u6027<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td><strong>expires<\/strong><\/td><td>GMT \u65f6\u95f4\u683c\u5f0f\uff0c\u8868\u793a\u8fc7\u671f\u65f6\u95f4<\/td><\/tr><tr><td><strong>max-age<\/strong><\/td><td>\u6307\u5b9a\u79d2\u6570\uff08\u4f18\u5148\u7ea7\u9ad8\u4e8e expires\uff09<\/td><\/tr><tr><td><strong>path<\/strong><\/td><td>cookie \u7684\u751f\u6548\u8def\u5f84\uff0c\u5982 <code>\/<\/code>\u3001<code>\/admin<\/code><\/td><\/tr><tr><td><strong>domain<\/strong><\/td><td>\u751f\u6548\u57df\u540d\uff0c\u5982 <code>.example.com<\/code><\/td><\/tr><tr><td><strong>Secure<\/strong><\/td><td>\u53ea\u80fd\u5728 HTTPS \u4e0b\u4f20\u8f93<\/td><\/tr><tr><td><strong>HttpOnly<\/strong><\/td><td>JS \u65e0\u6cd5\u8bfb\u5199\uff08<code>document.cookie<\/code> \u8bfb\u53d6\u4e0d\u5230\uff09<\/td><\/tr><tr><td><strong>SameSite<\/strong><\/td><td>\u63a7\u5236\u8de8\u7ad9\u643a\u5e26\u7b56\u7565\uff1aLax \/ Strict \/ None<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u8bbe\u7f6e\u4e00\u4e2a 7 \u5929\u8fc7\u671f\u7684 cookie\uff1a<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ndocument.cookie = `theme=dark; max-age=${7 * 24 * 60 * 60}; path=\/`;\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>5. \u5220\u9664 Cookie<\/strong><\/h1>\n\n\n\n<p>\u5220\u9664\u65b9\u5f0f\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8bbe\u7f6e <strong>\u540c\u540d Cookie<\/strong><\/li>\n\n\n\n<li>\u5e76\u8ba9\u5b83 <strong>\u8fc7\u671f<\/strong><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ndocument.cookie = &quot;username=; max-age=0; path=\/&quot;;\n\n<\/pre><\/div>\n\n\n<p>\u26a0\ufe0f \u5fc5\u987b\u4fdd\u8bc1 path\/domain \u4e0e\u539f cookie \u4e00\u81f4\uff0c\u5426\u5219\u53ef\u80fd\u5220\u4e0d\u6389\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>6. \u5c06 Cookie \u5b57\u7b26\u4e32\u89e3\u6790\u6210\u5bf9\u8c61\uff08\u5e38\u7528\uff09<\/strong><\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nfunction getCookies() {\n  return Object.fromEntries(\n    document.cookie.split(&quot;; &quot;).map(c =&gt; c.split(&quot;=&quot;))\n  );\n}\n\nconsole.log(getCookies());\n\n<\/pre><\/div>\n\n\n<p>\u8f93\u51fa\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n{\n  username: &quot;Jack&quot;,\n  theme: &quot;dark&quot;\n}\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>7. \u793a\u4f8b\uff1a\u5e38\u7528\u7684 Cookie \u5de5\u5177\u5c01\u88c5<\/strong><\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nconst Cookie = {\n  set(key, value, days = 7) {\n    const expires = new Date(Date.now() + days * 864e5).toUTCString();\n    document.cookie = `${key}=${value}; expires=${expires}; path=\/`;\n  },\n  get(key) {\n    return document.cookie\n      .split(&quot;; &quot;)\n      .find(row =&gt; row.startsWith(key + &quot;=&quot;))\n      ?.split(&quot;=&quot;)&#x5B;1];\n  },\n  delete(key) {\n    document.cookie = `${key}=; max-age=0; path=\/`;\n  }\n};\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>8. <code>HttpOnly<\/code> Cookie \u65e0\u6cd5\u901a\u8fc7 JS \u4fee\u6539<\/strong><\/h1>\n\n\n\n<p>\u8bb8\u591a\u65b0\u624b\u4f1a\u9047\u5230\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ndocument.cookie \u65e0\u6cd5\u8bfb\u53d6\u5230\u767b\u5f55 token\n\n<\/pre><\/div>\n\n\n<p>\u539f\u56e0\uff1a\u540e\u7aef\u8bbe\u7f6e\u4e86 HttpOnly\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nSet-Cookie: token=xxxx; HttpOnly\n\n<\/pre><\/div>\n\n\n<p>\u27a1\ufe0f JavaScript \u65e0\u6cd5\u8bbf\u95ee\uff0c\u8fd9\u662f\u5b89\u5168\u8bbe\u8ba1\uff0c\u7528\u6765\u9632\u6b62 XSS \u653b\u51fb\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a <strong>9. \u8de8\u7ad9 Cookie \u7684 SameSite \u8bf4\u660e\uff08Chrome \u65b0\u6807\u51c6\uff09<\/strong><\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>SameSite<\/th><th>\u7279\u70b9<\/th><th>\u80fd\u5426\u8de8\u7ad9\u53d1\u9001<\/th><\/tr><\/thead><tbody><tr><td><strong>Lax<\/strong>\uff08\u9ed8\u8ba4\uff09<\/td><td>\u6b63\u5e38\u60c5\u51b5\u7981\u6b62\u8de8\u7ad9\u53d1\u9001\uff0c\u4f46\u5bfc\u822a GET \u8bf7\u6c42\u53ef\u4ee5<\/td><td>\u90e8\u5206\u53ef\u4ee5<\/td><\/tr><tr><td><strong>Strict<\/strong><\/td><td>\u6700\u5b89\u5168\uff0c\u5b8c\u5168\u4e0d\u8de8\u7ad9<\/td><td>\u274c<\/td><\/tr><tr><td><strong>None<\/strong>\uff08\u5fc5\u987b Secure\uff09<\/td><td>\u53ef\u8de8\u7ad9\uff0c\u4f46\u5fc5\u987b HTTPS<\/td><td>\u2714\ufe0f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf6a \u5feb\u901f\u603b\u7ed3\uff08\u6d53\u7f29\u7248\uff09<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8bfb\u53d6 cookie\uff1a<code>document.cookie<\/code><\/li>\n\n\n\n<li>\u8bbe\u7f6e cookie\uff1a<code>document.cookie = \"key=value; expires=...; path=\/\";<\/code><\/li>\n\n\n\n<li>\u5220\u9664 cookie\uff1a<code>max-age=0<\/code><\/li>\n\n\n\n<li>JS \u65e0\u6cd5\u8bbf\u95ee\u5e26 <code>HttpOnly<\/code> \u7684 cookie<\/li>\n\n\n\n<li>SameSite \u51b3\u5b9a\u662f\u5426\u5141\u8bb8\u7b2c\u4e09\u65b9\u7ad9\u70b9\u643a\u5e26 cookie<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u9762\u7ed9\u4f60\u4e00\u4efd \u6700\u6e05\u6670\u3001\u6700\u5b9e\u7528\u7684 document.cookie \u4f7f\u7528\u8bf4\u660e\uff0c\u5305\u62ec\uff1a&#8230; <a class=\"more-link\" href=\"https:\/\/www.52runoob.com\/index.php\/2025\/11\/30\/document-cookie\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-328","post","type-post","status-publish","format-standard","hentry","category-12"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=328"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/328\/revisions"}],"predecessor-version":[{"id":329,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/328\/revisions\/329"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}