{"id":188438,"date":"2024-11-11T22:43:25","date_gmt":"2024-11-11T14:43:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/188438\/"},"modified":"2024-11-11T22:43:26","modified_gmt":"2024-11-11T14:43:26","slug":"%e6%8e%a2%e7%a9%b6%e5%af%a6%e7%8f%be%e6%9c%ac%e5%9c%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%98%e5%84%b2%e4%b9%8b%e5%a5%a7%e7%a7%98-js%e5%ad%98%e5%84%b2%e6%9c%ac%e5%9c%b0%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/188438\/","title":{"rendered":"\u63a2\u7a76\u5be6\u73fe\u672c\u5730\u6578\u64da\u5eab\u5b58\u5132\u4e4b\u5967\u79d8 (js\u5b58\u5132\u672c\u5730\u6578\u64da\u5eab)"},"content":{"rendered":"

\u63a2\u7a76\u5be6\u73fe\u672c\u5730\u6578\u64da\u5eab\u5b58\u5132\u4e4b\u5967\u79d8 (js\u5b58\u5132\u672c\u5730\u6578\u64da\u5eab)<\/h1>\n

\u96a8\u8457\u7db2\u9801\u61c9\u7528\u7a0b\u5e8f\u7684\u767c\u5c55\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u958b\u767c\u8005\u958b\u59cb\u63a2\u7d22\u5982\u4f55\u5728\u5ba2\u6236\u7aef\u5be6\u73fe\u6578\u64da\u5b58\u5132\u3002JavaScript \u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u672c\u5730\u6578\u64da\u5eab\u5b58\u5132\uff0c\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\uff0c\u9084\u80fd\u589e\u5f37\u7528\u6236\u9ad4\u9a57\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e JavaScript \u4e2d\u7684\u672c\u5730\u6578\u64da\u5eab\u5b58\u5132\u6280\u8853\uff0c\u5305\u62ec LocalStorage\u3001SessionStorage \u548c IndexedDB\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n

1. LocalStorage<\/h2>\n

LocalStorage \u662f\u4e00\u7a2e\u7c21\u55ae\u7684\u9375\u503c\u5c0d\u5b58\u5132\u6a5f\u5236\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728\u7528\u6236\u7684\u700f\u89bd\u5668\u4e2d\u5b58\u5132\u6578\u64da\u3002\u5176\u4e3b\u8981\u7279\u9ede\u662f\u6578\u64da\u6301\u4e45\u5316\uff0c\u5373\u4f7f\u95dc\u9589\u700f\u89bd\u5668\uff0c\u6578\u64da\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n

1.1 \u4f7f\u7528 LocalStorage<\/h3>\n

\u4f7f\u7528 LocalStorage \u975e\u5e38\u7c21\u55ae\uff0c\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u64cd\u4f5c\u793a\u4f8b\uff1a<\/p>\n

\n\/\/ \u5132\u5b58\u6578\u64da\nlocalStorage.setItem('username', 'JohnDoe');\n\n\/\/ \u7372\u53d6\u6578\u64da\nconst username = localStorage.getItem('username');\nconsole.log(username); \/\/ \u8f38\u51fa: JohnDoe\n\n\/\/ \u522a\u9664\u6578\u64da\nlocalStorage.removeItem('username');\n\n\/\/ \u6e05\u7a7a\u6240\u6709\u6578\u64da\nlocalStorage.clear();\n<\/code><\/pre>\n
2. SessionStorage<\/h2>\n
SessionStorage \u8207 LocalStorage \u985e\u4f3c\uff0c\u4f46\u5176\u6578\u64da\u50c5\u5728\u7576\u524d\u6703\u8a71\u4e2d\u6709\u6548\u3002\u7576\u7528\u6236\u95dc\u9589\u700f\u89bd\u5668\u7a97\u53e3\u6642\uff0cSessionStorage \u4e2d\u7684\u6578\u64da\u5c07\u88ab\u6e05\u9664\u3002<\/p>\n
2.1 \u4f7f\u7528 SessionStorage<\/h3>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528 SessionStorage \u7684\u793a\u4f8b\uff1a<\/p>\n
\n\/\/ \u5132\u5b58\u6578\u64da\nsessionStorage.setItem('sessionKey', 'sessionValue');\n\n\/\/ \u7372\u53d6\u6578\u64da\nconst sessionValue = sessionStorage.getItem('sessionKey');\nconsole.log(sessionValue); \/\/ \u8f38\u51fa: sessionValue\n\n\/\/ \u522a\u9664\u6578\u64da\nsessionStorage.removeItem('sessionKey');\n\n\/\/ \u6e05\u7a7a\u6240\u6709\u6578\u64da\nsessionStorage.clear();\n<\/code><\/pre>\n
3. IndexedDB<\/h2>\n
IndexedDB \u662f\u4e00\u7a2e\u66f4\u70ba\u5f37\u5927\u7684\u672c\u5730\u6578\u64da\u5eab\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u9069\u5408\u5b58\u5132\u5927\u91cf\u7d50\u69cb\u5316\u6578\u64da\u3002\u5b83\u652f\u6301\u4e8b\u52d9\u3001\u7d22\u5f15\u548c\u67e5\u8a62\uff0c\u4e26\u4e14\u53ef\u4ee5\u8655\u7406\u66f4\u8907\u96dc\u7684\u6578\u64da\u7d50\u69cb\u3002<\/p>\n
3.1 \u4f7f\u7528 IndexedDB<\/h3>\n
IndexedDB \u7684\u4f7f\u7528\u76f8\u5c0d\u8907\u96dc\uff0c\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u64cd\u4f5c\u6d41\u7a0b\uff1a<\/p>\n
\n\/\/ \u6253\u958b\u6578\u64da\u5eab\nconst request = indexedDB.open('myDatabase', 1);\n\nrequest.onupgradeneeded = function(event) {\n    const db = event.target.result;\n    \/\/ \u5275\u5efa\u4e00\u500b\u5c0d\u8c61\u5b58\u5132\u7a7a\u9593\n    const objectStore = db.createObjectStore('users', { keyPath: 'id' });\n};\n\nrequest.onsuccess = function(event) {\n    const db = event.target.result;\n    const transaction = db.transaction('users', 'readwrite');\n    const objectStore = transaction.objectStore('users');\n\n    \/\/ \u5132\u5b58\u6578\u64da\n    objectStore.add({ id: 1, name: 'John Doe' });\n\n    \/\/ \u7372\u53d6\u6578\u64da\n    const getRequest = objectStore.get(1);\n    getRequest.onsuccess = function() {\n        console.log(getRequest.result); \/\/ \u8f38\u51fa: { id: 1, name: 'John Doe' }\n    };\n};\n\nrequest.onerror = function(event) {\n    console.error('Database error: ' + event.target.errorCode);\n};\n<\/code><\/pre>\n
4. \u5c0f\u7d50<\/h2>\n
\u672c\u5730\u6578\u64da\u5eab\u5b58\u5132\u6280\u8853\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u5f9e\u7c21\u55ae\u7684 LocalStorage \u548c SessionStorage \u5230\u529f\u80fd\u5f37\u5927\u7684 IndexedDB\u3002\u6839\u64da\u61c9\u7528\u7684\u9700\u6c42\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9078\u64c7\u6700\u5408\u9069\u7684\u5b58\u5132\u65b9\u6848\uff0c\u4ee5\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u5be6\u73fe\u9019\u4e9b\u6280\u8853\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u8005\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u670d\u52d9\u5668\uff0c\u5f9e\u800c\u66f4\u597d\u5730\u7ba1\u7406\u548c\u5b58\u5132\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5982\u4f55\u5229\u7528JavaScript\u5be6\u73fe\u672c\u5730\u6578\u64da\u5eab\u5b58\u5132\uff0c\u63ed\u793a\u6578\u64da\u7ba1\u7406\u7684\u5967\u79d8\u8207\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-188438","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188438","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=188438"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188438\/revisions"}],"predecessor-version":[{"id":188439,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/188438\/revisions\/188439"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=188438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=188438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=188438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}