{"id":171429,"date":"2024-11-07T02:40:18","date_gmt":"2024-11-06T18:40:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171429\/"},"modified":"2024-11-07T02:40:19","modified_gmt":"2024-11-06T18:40:19","slug":"%e6%b7%ba%e6%9e%90indexeddb%e5%ad%98%e6%95%b8%e7%b5%90%e6%a7%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171429\/","title":{"rendered":"\u6dfa\u6790IndexedDB\u5b58\u6578\u7d50\u69cb"},"content":{"rendered":"<h1 id=\"%e6%b7%ba%e6%9e%90indexeddb%e5%ad%98%e6%95%b8%e7%b5%90%e6%a7%8b-MERrTjnmdA\">\u6dfa\u6790IndexedDB\u5b58\u6578\u7d50\u69cb<\/h1>\n<p>\u5728\u73fe\u4ee3\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u6578\u64da\u7684\u5b58\u5132\u548c\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002IndexedDB\u4f5c\u70ba\u4e00\u7a2e\u4f4e\u968e\u7684\u3001\u57fa\u65bc\u4e8b\u52d9\u7684\u6578\u64da\u5eab\uff0c\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5728\u7528\u6236\u7684\u700f\u89bd\u5668\u4e2d\u5b58\u5132\u5927\u91cf\u7d50\u69cb\u5316\u6578\u64da\u7684\u65b9\u5f0f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eIndexedDB\u7684\u5b58\u6578\u7d50\u69cb\u53ca\u5176\u904b\u4f5c\u539f\u7406\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afindexeddb%ef%bc%9f-MERrTjnmdA\">\u4ec0\u9ebc\u662fIndexedDB\uff1f<\/h2>\n<p>IndexedDB\u662f\u4e00\u7a2e\u5728\u7528\u6236\u7aef\u5b58\u5132\u6578\u64da\u7684\u6280\u8853\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728\u7528\u6236\u7684\u700f\u89bd\u5668\u4e2d\u5275\u5efa\u3001\u8b80\u53d6\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u8207\u50b3\u7d71\u7684Web\u5b58\u5132\uff08\u5982localStorage\u548csessionStorage\uff09\u76f8\u6bd4\uff0cIndexedDB\u80fd\u5920\u8655\u7406\u66f4\u5927\u898f\u6a21\u7684\u6578\u64da\uff0c\u4e26\u4e14\u652f\u6301\u8907\u96dc\u7684\u67e5\u8a62\u548c\u4e8b\u52d9\u8655\u7406\u3002<\/p>\n<h2 id=\"indexeddb%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-MERrTjnmdA\">IndexedDB\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u6df1\u5165IndexedDB\u7684\u5b58\u6578\u7d50\u69cb\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5eab\uff08Database\uff09<\/strong>\uff1aIndexedDB\u4e2d\u7684\u6578\u64da\u5eab\u662f\u6578\u64da\u7684\u5bb9\u5668\uff0c\u6bcf\u500b\u6578\u64da\u5eab\u53ef\u4ee5\u5305\u542b\u591a\u500b\u5c0d\u8c61\u5b58\u5132\u3002<\/li>\n<li><strong>\u5c0d\u8c61\u5b58\u5132\uff08Object Store\uff09<\/strong>\uff1a\u5c0d\u8c61\u5b58\u5132\u662fIndexedDB\u4e2d\u7528\u4f86\u5b58\u5132\u6578\u64da\u7684\u4e3b\u8981\u7d50\u69cb\uff0c\u985e\u4f3c\u65bc\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\u7684\u8868\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff08Index\uff09<\/strong>\uff1a\u7d22\u5f15\u662f\u7528\u4f86\u52a0\u901f\u67e5\u8a62\u7684\u7d50\u69cb\uff0c\u5141\u8a31\u958b\u767c\u8005\u6839\u64da\u7279\u5b9a\u7684\u5c6c\u6027\u5feb\u901f\u6aa2\u7d22\u6578\u64da\u3002<\/li>\n<li><strong>\u4e8b\u52d9\uff08Transaction\uff09<\/strong>\uff1a\u4e8b\u52d9\u662f\u5c0d\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u5c01\u88dd\uff0c\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"indexeddb%e7%9a%84%e5%ad%98%e6%95%b8%e7%b5%90%e6%a7%8b-MERrTjnmdA\">IndexedDB\u7684\u5b58\u6578\u7d50\u69cb<\/h2>\n<p>IndexedDB\u7684\u5b58\u6578\u7d50\u69cb\u4e3b\u8981\u7531\u6578\u64da\u5eab\u3001\u5c0d\u8c61\u5b58\u5132\u548c\u7d22\u5f15\u7d44\u6210\u3002\u4ee5\u4e0b\u662f\u9019\u4e9b\u7d50\u69cb\u7684\u8a73\u7d30\u4ecb\u7d39\uff1a<\/p>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e5%ba%ab-MERrTjnmdA\">1. \u6578\u64da\u5eab<\/h3>\n<p>\u6bcf\u500bIndexedDB\u6578\u64da\u5eab\u90fd\u6709\u4e00\u500b\u540d\u7a31\u548c\u7248\u672c\u865f\u3002\u7576\u6578\u64da\u5eab\u7684\u7d50\u69cb\u767c\u751f\u8b8a\u5316\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u5347\u7d1a\u7248\u672c\u865f\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u820a\u6578\u64da\u7684\u517c\u5bb9\u6027\uff0c\u4e26\u5141\u8a31\u958b\u767c\u8005\u5728\u5347\u7d1a\u904e\u7a0b\u4e2d\u9032\u884c\u5fc5\u8981\u7684\u6578\u64da\u9077\u79fb\u3002<\/p>\n<h3 id=\"2-%e5%b0%8d%e8%b1%a1%e5%ad%98%e5%84%b2-MERrTjnmdA\">2. \u5c0d\u8c61\u5b58\u5132<\/h3>\n<p>\u5c0d\u8c61\u5b58\u5132\u662fIndexedDB\u4e2d\u5b58\u5132\u6578\u64da\u7684\u4e3b\u8981\u7d50\u69cb\u3002\u6bcf\u500b\u5c0d\u8c61\u5b58\u5132\u53ef\u4ee5\u5305\u542b\u591a\u500b\u8a18\u9304\uff0c\u6bcf\u689d\u8a18\u9304\u90fd\u662f\u4e00\u500bJavaScript\u5c0d\u8c61\u3002\u958b\u767c\u8005\u53ef\u4ee5\u70ba\u5c0d\u8c61\u5b58\u5132\u5b9a\u7fa9\u4e3b\u9375\uff0c\u9019\u6a23\u53ef\u4ee5\u552f\u4e00\u6a19\u8b58\u6bcf\u689d\u8a18\u9304\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u5c0d\u8c61\u5b58\u5132\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nlet request = indexedDB.open(\"myDatabase\", 1);\n\nrequest.onupgradeneeded = function(event) {\n    let db = event.target.result;\n    let objectStore = db.createObjectStore(\"myObjectStore\", { keyPath: \"id\" });\n};\n<\/code><\/pre>\n<h3 id=\"3-%e7%b4%a2%e5%bc%95-MERrTjnmdA\">3. \u7d22\u5f15<\/h3>\n<p>\u7d22\u5f15\u5141\u8a31\u958b\u767c\u8005\u6839\u64da\u7279\u5b9a\u5c6c\u6027\u5feb\u901f\u6aa2\u7d22\u6578\u64da\u3002\u6bcf\u500b\u5c0d\u8c61\u5b58\u5132\u53ef\u4ee5\u6709\u591a\u500b\u7d22\u5f15\uff0c\u9019\u4e9b\u7d22\u5f15\u53ef\u4ee5\u662f\u55ae\u4e00\u5c6c\u6027\u6216\u591a\u5c6c\u6027\u7684\u7d44\u5408\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7d22\u5f15\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nobjectStore.createIndex(\"nameIndex\", \"name\", { unique: false });\n<\/code><\/pre>\n<h3 id=\"4-%e4%ba%8b%e5%8b%99-MERrTjnmdA\">4. \u4e8b\u52d9<\/h3>\n<p>IndexedDB\u4e2d\u7684\u4e8b\u52d9\u78ba\u4fdd\u4e86\u6578\u64da\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002\u958b\u767c\u8005\u53ef\u4ee5\u5728\u4e8b\u52d9\u4e2d\u57f7\u884c\u591a\u500b\u64cd\u4f5c\uff0c\u9019\u4e9b\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u4e8b\u52d9\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nlet transaction = db.transaction([\"myObjectStore\"], \"readwrite\");\nlet objectStore = transaction.objectStore(\"myObjectStore\");\nlet request = objectStore.add({ id: 1, name: \"John Doe\" });\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MERrTjnmdA\">\u7e3d\u7d50<\/h2>\n<p>IndexedDB\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u5ba2\u6236\u7aef\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\u548c\u9ad8\u6548\u7684\u67e5\u8a62\u80fd\u529b\u3002\u901a\u904e\u7406\u89e3\u5176\u57fa\u672c\u6982\u5ff5\u548c\u5b58\u6578\u7d50\u69cb\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528\u9019\u4e00\u6280\u8853\u4f86\u69cb\u5efa\u9ad8\u6548\u7684\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u3002\u82e5\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u9999\u6e2f\u4f7f\u7528<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\u7a0b\u5f0f\u6709\u8208\u8da3\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6dfa\u6790IndexedDB\u5b58\u6578\u7d50\u69cb\uff0c\u63a2\u8a0e\u5176\u6578\u64da\u6a21\u578b\u3001\u5b58\u5132\u65b9\u5f0f\u53ca\u67e5\u8a62\u6548\u7387\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u5229\u7528\u9019\u4e00\u6280\u8853\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-171429","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171429","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=171429"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171429\/revisions"}],"predecessor-version":[{"id":171430,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171429\/revisions\/171430"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}