{"id":1969,"date":"2025-02-23T14:55:07","date_gmt":"2025-02-23T06:55:07","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=1969"},"modified":"2025-02-23T14:55:07","modified_gmt":"2025-02-23T06:55:07","slug":"html5-web-sql-%e6%95%b0%e6%8d%ae%e5%ba%93","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/02\/23\/html5-web-sql-%e6%95%b0%e6%8d%ae%e5%ba%93\/","title":{"rendered":"HTML5 Web SQL \u6570\u636e\u5e93"},"content":{"rendered":"\n

HTML5 Web SQL \u6570\u636e\u5e93\u662f HTML5 \u4e2d\u63d0\u4f9b\u7684\u4e00\u4e2a\u7528\u4e8e\u5728\u5ba2\u6237\u7aef\u5b58\u50a8\u7ed3\u6784\u5316\u6570\u636e\u7684 API\u3002\u5b83\u5141\u8bb8 web \u5e94\u7528\u4f7f\u7528\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff08\u5982 SQLite\uff09\u5728\u6d4f\u89c8\u5668\u4e2d\u5b58\u50a8\u548c\u64cd\u4f5c\u6570\u636e\u3002Web SQL \u63d0\u4f9b\u4e86 SQL \u67e5\u8be2\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u6267\u884c SQL \u8bed\u53e5\uff0c\u5982 CREATE<\/code>, SELECT<\/code>, INSERT<\/code>, UPDATE<\/code>, DELETE<\/code> \u7b49\uff0c\u4ece\u800c\u8ba9\u5f00\u53d1\u8005\u5728\u5ba2\u6237\u7aef\u7ba1\u7406\u6570\u636e\u3002<\/p>\n\n\n\n

\u4e00\u3001\u7279\u70b9\uff1a<\/h3>\n\n\n\n
    \n
  • \u5ba2\u6237\u7aef\u5b58\u50a8\uff1a<\/strong> Web SQL \u5141\u8bb8\u6d4f\u89c8\u5668\u5728\u7528\u6237\u7684\u8bbe\u5907\u4e0a\u5b58\u50a8\u548c\u7ba1\u7406\u6570\u636e\uff0c\u65e0\u9700\u4f9d\u8d56\u670d\u52a1\u5668\u3002<\/li>\n\n\n\n
  • \u5173\u7cfb\u578b\u6570\u636e\u5e93\uff1a<\/strong> \u4f7f\u7528 SQL \u8bed\u53e5\u8fdb\u884c\u6570\u636e\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6807\u51c6\u7684 SQL \u67e5\u8be2\u548c\u4e8b\u52a1\u64cd\u4f5c\u3002<\/li>\n\n\n\n
  • \u5b58\u50a8\u5bb9\u91cf\uff1a<\/strong> \u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u652f\u6301\u4e0d\u540c\u7684\u5b58\u50a8\u5bb9\u91cf\uff0c\u4f46\u901a\u5e38\u53ef\u4ee5\u5b58\u50a8\u6570 MB \u7684\u6570\u636e\u3002<\/li>\n\n\n\n
  • \u652f\u6301\u7684\u6570\u636e\u5e93\u5f15\u64ce\uff1a<\/strong> Web SQL \u4f7f\u7528 SQLite \u5f15\u64ce\uff08\u5728\u6d4f\u89c8\u5668\u4e2d\u5b9e\u73b0\uff09\u3002<\/li>\n<\/ul>\n\n\n\n

    \u4e8c\u3001\u6ce8\u610f\uff1a<\/h3>\n\n\n\n
      \n
    • Web SQL \u5df2\u7ecf\u88ab HTML5 \u89c4\u8303\u5f03\u7528\uff0c\u5e76\u4e0d\u88ab\u6240\u6709\u6d4f\u89c8\u5668\u652f\u6301\u3002\u6bd4\u5982\uff0cChrome \u548c Safari \u652f\u6301 Web SQL\uff0c\u4f46 Firefox \u548c Internet Explorer \u4e0d\u652f\u6301\u3002\u4e3a\u4e86\u5b9e\u73b0\u66f4\u5e7f\u6cdb\u7684\u517c\u5bb9\u6027\uff0c\u63a8\u8350\u4f7f\u7528 IndexedDB \u4f5c\u4e3a\u5b58\u50a8\u89e3\u51b3\u65b9\u6848\u3002<\/li>\n<\/ul>\n\n\n\n

      \u5c3d\u7ba1\u5982\u6b64\uff0c\u4e86\u89e3 Web SQL \u4ecd\u7136\u5bf9\u65e7\u7684\u9879\u76ee\u6709\u7528\uff0c\u6216\u8005\u5728\u652f\u6301 Web SQL \u7684\u6d4f\u89c8\u5668\u4e2d\uff0c\u5b83\u4ecd\u7136\u53ef\u4ee5\u88ab\u4f7f\u7528\u3002<\/p>\n\n\n\n

      \u4e09\u3001\u4f7f\u7528 Web SQL \u7684\u57fa\u672c\u6d41\u7a0b\uff1a<\/h3>\n\n\n\n
        \n
      1. \u6253\u5f00\u6570\u636e\u5e93<\/strong><\/li>\n\n\n\n
      2. \u521b\u5efa\u8868<\/strong><\/li>\n\n\n\n
      3. \u63d2\u5165\u6570\u636e<\/strong><\/li>\n\n\n\n
      4. \u67e5\u8be2\u6570\u636e<\/strong><\/li>\n\n\n\n
      5. \u66f4\u65b0\u6570\u636e<\/strong><\/li>\n\n\n\n
      6. \u5220\u9664\u6570\u636e<\/strong><\/li>\n\n\n\n
      7. \u5173\u95ed\u6570\u636e\u5e93<\/strong><\/li>\n<\/ol>\n\n\n\n

        \u56db\u3001Web SQL \u793a\u4f8b\u4ee3\u7801<\/h3>\n\n\n\n

        1. \u6253\u5f00\u6570\u636e\u5e93<\/strong><\/h4>\n\n\n\n
        \/\/ \u6253\u5f00\u6216\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a \"myDatabase\" \u7684\u6570\u636e\u5e93\uff0c\u5927\u5c0f\u9650\u5236\u4e3a 5MB\nvar db = openDatabase('myDatabase', '1.0', 'Test Database', 5 * 1024 * 1024);<\/code><\/pre>\n\n\n\n
        2. \u521b\u5efa\u8868<\/strong><\/h4>\n\n\n\n
        db.transaction(function (tx) {\n  \/\/ \u521b\u5efa\u8868\u683c\uff0c\u8868\u683c\u540d\u4e3a \"users\"\n  tx.executeSql('CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name, age)');\n});<\/code><\/pre>\n\n\n\n
        3. \u63d2\u5165\u6570\u636e<\/strong><\/h4>\n\n\n\n
        db.transaction(function (tx) {\n  \/\/ \u5411 \"users\" \u8868\u63d2\u5165\u6570\u636e\n  tx.executeSql('INSERT INTO users (name, age) VALUES (?, ?)', ['Alice', 25]);\n  tx.executeSql('INSERT INTO users (name, age) VALUES (?, ?)', ['Bob', 30]);\n});<\/code><\/pre>\n\n\n\n
        4. \u67e5\u8be2\u6570\u636e<\/strong><\/h4>\n\n\n\n
        db.transaction(function (tx) {\n  \/\/ \u4ece \"users\" \u8868\u4e2d\u67e5\u8be2\u6240\u6709\u6570\u636e\n  tx.executeSql('SELECT * FROM users', [], function (tx, results) {\n    var len = results.rows.length;\n    for (var i = 0; i < len; i++) {\n      var row = results.rows.item(i);\n      console.log('ID: ' + row.id + ', Name: ' + row.name + ', Age: ' + row.age);\n    }\n  });\n});<\/code><\/pre>\n\n\n\n
        5. \u66f4\u65b0\u6570\u636e<\/strong><\/h4>\n\n\n\n
        db.transaction(function (tx) {\n  \/\/ \u66f4\u65b0 \"users\" \u8868\u4e2d\u7684\u6570\u636e\uff0c\u5c06 \"Alice\" \u7684\u5e74\u9f84\u6539\u4e3a 26\n  tx.executeSql('UPDATE users SET age = ? WHERE name = ?', [26, 'Alice']);\n});<\/code><\/pre>\n\n\n\n
        6. \u5220\u9664\u6570\u636e<\/strong><\/h4>\n\n\n\n
        db.transaction(function (tx) {\n  \/\/ \u4ece \"users\" \u8868\u5220\u9664\u540d\u5b57\u4e3a \"Bob\" \u7684\u8bb0\u5f55\n  tx.executeSql('DELETE FROM users WHERE name = ?', ['Bob']);\n});<\/code><\/pre>\n\n\n\n
        7. \u5173\u95ed\u6570\u636e\u5e93<\/strong><\/h4>\n\n\n\n
          \n
        • Web SQL \u7684\u6570\u636e\u5e93\u8fde\u63a5\u4f1a\u5728\u6d4f\u89c8\u5668\u5173\u95ed\u65f6\u81ea\u52a8\u5173\u95ed\uff0c\u4f46\u5f00\u53d1\u8005\u53ef\u4ee5\u663e\u5f0f\u5730\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n
          db = null; \/\/ \u89e3\u9664\u5bf9\u6570\u636e\u5e93\u7684\u5f15\u7528<\/code><\/pre>\n\n\n\n
          \u4e94\u3001\u9519\u8bef\u5904\u7406<\/h3>\n\n\n\n
          Web SQL \u652f\u6301\u4e24\u79cd\u9519\u8bef\u5904\u7406\u673a\u5236\uff1a<\/p>\n\n\n\n
            \n
          1. SQL \u9519\u8bef\uff1a<\/strong> \u5f53 SQL \u67e5\u8be2\u5931\u8d25\u65f6\uff0c\u8c03\u7528\u56de\u8c03\u51fd\u6570\u7684 error<\/code> \u53c2\u6570\u3002<\/li>\n\n\n\n
          2. \u6570\u636e\u5e93\u6253\u5f00\u9519\u8bef\uff1a<\/strong> \u5f53\u6570\u636e\u5e93\u6253\u5f00\u5931\u8d25\u65f6\uff0c\u8c03\u7528 onerror<\/code> \u56de\u8c03\u3002<\/li>\n<\/ol>\n\n\n\n
            \u793a\u4f8b\uff1a<\/h4>\n\n\n\n
            db.transaction(function (tx) {\n  tx.executeSql('CREATE TABLE users (id INTEGER PRIMARY KEY, name)', [],\n    function (tx, results) {\n      console.log('Table created successfully');\n    },\n    function (tx, error) {\n      console.log('Error creating table: ' + error.message);\n    }\n  );\n});<\/code><\/pre>\n\n\n\n
            \u516d\u3001\u4f18\u70b9\u548c\u7f3a\u70b9\uff1a<\/h3>\n\n\n\n
            \u4f18\u70b9\uff1a<\/h4>\n\n\n\n
              \n
            • \u57fa\u4e8e SQL\uff1a<\/strong> \u4f7f\u7528\u6807\u51c6\u7684 SQL \u8bed\u53e5\u64cd\u4f5c\u6570\u636e\uff0c\u5f00\u53d1\u8005\u719f\u6089\u7684 SQL \u53ef\u4ee5\u76f4\u63a5\u5e94\u7528\u3002<\/li>\n\n\n\n
            • \u652f\u6301\u4e8b\u52a1\uff1a<\/strong> \u652f\u6301\u4e8b\u52a1\u64cd\u4f5c\uff0c\u786e\u4fdd\u591a\u4e2a\u6570\u636e\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u5931\u8d25\u3002<\/li>\n\n\n\n
            • \u5ba2\u6237\u7aef\u5b58\u50a8\uff1a<\/strong> \u4e0d\u9700\u8981\u670d\u52a1\u5668\u652f\u6301\uff0c\u6570\u636e\u5b58\u50a8\u5728\u7528\u6237\u7684\u8bbe\u5907\u4e2d\u3002<\/li>\n<\/ul>\n\n\n\n
              \u7f3a\u70b9\uff1a<\/h4>\n\n\n\n
                \n
              • \u5df2\u5f03\u7528\uff1a<\/strong> Web SQL \u4e0d\u518d\u88ab HTML5 \u89c4\u8303\u63a8\u8350\uff0c\u4e14\u5e76\u4e0d\u652f\u6301\u6240\u6709\u6d4f\u89c8\u5668\uff0c\u7279\u522b\u662f Firefox \u548c Internet Explorer \u4e0d\u652f\u6301 Web SQL\u3002<\/li>\n\n\n\n
              • \u5b58\u50a8\u9650\u5236\uff1a<\/strong> \u5b58\u50a8\u7684\u5bb9\u91cf\u9650\u5236\u5728\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u4e2d\u53ef\u80fd\u6709\u6240\u4e0d\u540c\uff0c\u4e14\u6700\u5927\u5bb9\u91cf\u901a\u5e38\u4e3a 5MB \u5de6\u53f3\u3002<\/li>\n\n\n\n
              • \u7f3a\u5c11\u5f3a\u5927\u7684\u67e5\u8be2\u529f\u80fd\uff1a<\/strong> \u76f8\u6bd4\u4e8e\u670d\u52a1\u5668\u7aef\u7684\u6570\u636e\u5e93\uff0cWeb SQL \u7f3a\u5c11\u4e00\u4e9b\u9ad8\u7ea7\u529f\u80fd\u548c\u4f18\u5316\u3002<\/li>\n<\/ul>\n\n\n\n
                \u4e03\u3001\u66ff\u4ee3\u65b9\u6848\uff1aIndexedDB<\/h3>\n\n\n\n
                \u5c3d\u7ba1 Web SQL \u5f88\u6709\u7528\uff0c\u4f46\u7531\u4e8e\u5b83\u88ab\u5f03\u7528\uff0c\u73b0\u5728\u66f4\u63a8\u8350\u4f7f\u7528 IndexedDB<\/strong>\u3002IndexedDB \u662f\u4e00\u4e2a\u4f4e\u7ea7\u522b\u7684 API\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u6d4f\u89c8\u5668\u4e2d\u5b58\u50a8\u5927\u91cf\u6570\u636e\u5e76\u4f7f\u7528\u7d22\u5f15\u67e5\u8be2\u3002IndexedDB \u53ef\u4ee5\u5904\u7406\u66f4\u590d\u6742\u7684\u6570\u636e\u5b58\u50a8\u9700\u6c42\uff0c\u5e76\u4e14\u5728\u6240\u6709\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e2d\u90fd\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u652f\u6301\u3002<\/p>\n\n\n\n
                \u603b\u7ed3\uff1a<\/h3>\n\n\n\n
                  \n
                • Web SQL \u6570\u636e\u5e93<\/strong> \u63d0\u4f9b\u4e86\u5728\u5ba2\u6237\u7aef\u4f7f\u7528 SQL \u5b58\u50a8\u548c\u64cd\u4f5c\u6570\u636e\u7684\u529f\u80fd\uff0c\u9002\u7528\u4e8e\u652f\u6301 Web SQL \u7684\u6d4f\u89c8\u5668\u3002<\/li>\n\n\n\n
                • \u5c3d\u7ba1\u5b83\u63d0\u4f9b\u4e86\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u529f\u80fd\uff0c\u4f46\u7531\u4e8e\u88ab HTML5 \u89c4\u8303\u5f03\u7528\uff0c\u5efa\u8bae\u4f7f\u7528 IndexedDB<\/strong> \u4f5c\u4e3a\u5ba2\u6237\u7aef\u5b58\u50a8\u7684\u4e3b\u8981\u89e3\u51b3\u65b9\u6848\u3002<\/li>\n\n\n\n
                • \u5982\u679c\u4f60\u5728\u6784\u5efa\u4e00\u4e2a\u9700\u8981\u5728\u5ba2\u6237\u7aef\u5b58\u50a8\u6570\u636e\u7684\u5e94\u7528\uff0c\u4e14\u76ee\u6807\u6d4f\u89c8\u5668\u652f\u6301 Web SQL\uff0c\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528\u5b83\uff1b\u5426\u5219\uff0c\u4f7f\u7528 IndexedDB \u4f1a\u662f\u4e00\u4e2a\u66f4\u597d\u7684\u9009\u62e9\u3002<\/li>\n<\/ul>\n\n\n\n
                  <\/p>\n","protected":false},"excerpt":{"rendered":"
                  HTML5 Web SQL \u6570\u636e\u5e93\u662f HTML5 \u4e2d\u63d0\u4f9b\u7684\u4e00\u4e2a\u7528\u4e8e\u5728\u5ba2\u6237\u7aef\u5b58\u50a8\u7ed3\u6784\u5316\u6570\u636e\u7684 API\u3002\u5b83\u5141\u8bb8 w […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[75],"tags":[],"class_list":["post-1969","post","type-post","status-publish","format-standard","hentry","category-html5"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1969","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=1969"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1969\/revisions"}],"predecessor-version":[{"id":1970,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1969\/revisions\/1970"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=1969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=1969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=1969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}