{"id":61867,"date":"2024-10-13T14:19:14","date_gmt":"2024-10-13T06:19:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61867\/"},"modified":"2024-10-13T14:19:14","modified_gmt":"2024-10-13T06:19:14","slug":"javascript%e4%b8%80%e8%a1%8c%e4%bb%a3%e7%a2%bc%e8%bc%95%e9%ac%86%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%80%e5%be%8c%e4%b8%80%e8%a1%8c-js%e5%a6%82%e4%bd%95%e5%88%aa%e9%99%a4%e6%9c%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61867\/","title":{"rendered":"JavaScript\u4e00\u884c\u4ee3\u78bc\u8f15\u9b06\u522a\u9664\u6578\u64da\u5eab\u6700\u5f8c\u4e00\u884c (js\u5982\u4f55\u522a\u9664\u6700\u5f8c\u4e00\u884c\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"javascript%e4%b8%80%e8%a1%8c%e4%bb%a3%e7%a2%bc%e8%bc%95%e9%ac%86%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%80%e5%be%8c%e4%b8%80%e8%a1%8c-eApERVsXbz\">JavaScript\u4e00\u884c\u4ee3\u78bc\u8f15\u9b06\u522a\u9664\u6578\u64da\u5eab\u6700\u5f8c\u4e00\u884c<\/h1>\n<p>\u5728\u73fe\u4ee3\u7db2\u9801\u958b\u767c\u4e2d\uff0cJavaScript\u5df2\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002\u7121\u8ad6\u662f\u524d\u7aef\u4ea4\u4e92\u9084\u662f\u5f8c\u7aef\u6578\u64da\u8655\u7406\uff0cJavaScript\u90fd\u80fd\u63d0\u4f9b\u5f37\u5927\u7684\u652f\u6301\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528JavaScript\u8f15\u9b06\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5f8c\u4e00\u884c\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%a6%82%e8%bf%b0-eApERVsXbz\">\u6578\u64da\u5eab\u64cd\u4f5c\u6982\u8ff0<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u901a\u5e38\u9700\u8981\u4f7f\u7528SQL\u8a9e\u8a00\u4f86\u57f7\u884c\u67e5\u8a62\u548c\u4fee\u6539\u6578\u64da\u3002JavaScript\u672c\u8eab\u4e26\u4e0d\u76f4\u63a5\u8207\u6578\u64da\u5eab\u4ea4\u4e92\uff0c\u4f46\u53ef\u4ee5\u901a\u904e\u5f8c\u7aef\u6280\u8853\uff08\u5982Node.js\uff09\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff1a<\/p>\n<ul>\n<li>\u67e5\u8a62\u6578\u64da<\/li>\n<li>\u63d2\u5165\u6578\u64da<\/li>\n<li>\u66f4\u65b0\u6578\u64da<\/li>\n<li>\u522a\u9664\u6578\u64da<\/li>\n<\/ul>\n<h2 id=\"%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%80%e5%be%8c%e4%b8%80%e8%a1%8c%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%80%9d%e8%b7%af-eApERVsXbz\">\u522a\u9664\u6578\u64da\u5eab\u6700\u5f8c\u4e00\u884c\u7684\u57fa\u672c\u601d\u8def<\/h2>\n<p>\u8981\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5f8c\u4e00\u884c\uff0c\u9996\u5148\u9700\u8981\u78ba\u5b9a\u8a72\u884c\u7684\u552f\u4e00\u6a19\u8b58\u7b26\uff08\u5982ID\uff09\u3002\u901a\u5e38\uff0c\u6578\u64da\u5eab\u4e2d\u7684\u8868\u6703\u6709\u4e00\u500b\u81ea\u589e\u7684ID\u5b57\u6bb5\uff0c\u9019\u4f7f\u5f97\u6211\u5011\u80fd\u5920\u8f15\u9b06\u627e\u5230\u6700\u5f8c\u4e00\u884c\u7684ID\u3002\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u522a\u9664\u8a72\u884c\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8node-js%e5%92%8cmysql%e7%9a%84%e7%a4%ba%e4%be%8b-eApERVsXbz\">\u4f7f\u7528Node.js\u548cMySQL\u7684\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Node.js\u548cMySQL\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5f8c\u4e00\u884c\uff1a<\/p>\n<pre><code>const mysql = require('mysql');\n\n\/\/ \u5275\u5efa\u6578\u64da\u5eab\u9023\u63a5\nconst connection = mysql.createConnection({\n    host: 'localhost',\n    user: 'your_username',\n    password: 'your_password',\n    database: 'your_database'\n});\n\n\/\/ \u9023\u63a5\u5230\u6578\u64da\u5eab\nconnection.connect((err) =&gt; {\n    if (err) throw err;\n    console.log('Connected to the database!');\n});\n\n\/\/ \u67e5\u8a62\u6700\u5f8c\u4e00\u884c\u7684ID\nconnection.query('SELECT id FROM your_table ORDER BY id DESC LIMIT 1', (err, result) =&gt; {\n    if (err) throw err;\n\n    const lastId = result[0].id;\n\n    \/\/ \u522a\u9664\u6700\u5f8c\u4e00\u884c\n    connection.query('DELETE FROM your_table WHERE id = ?', [lastId], (err, result) =&gt; {\n        if (err) throw err;\n        console.log('Last row deleted:', result.affectedRows);\n    });\n});\n\n\/\/ \u95dc\u9589\u9023\u63a5\nconnection.end();\n<\/code><\/pre>\n<h2 id=\"%e4%bb%a3%e7%a2%bc%e8%a7%a3%e6%9e%90-eApERVsXbz\">\u4ee3\u78bc\u89e3\u6790<\/h2>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u4e00\u500bMySQL\u7684\u9023\u63a5\uff0c\u7136\u5f8c\u67e5\u8a62\u4e86\u8868\u4e2d\u6700\u5f8c\u4e00\u884c\u7684ID\u3002\u63a5\u8457\uff0c\u6211\u5011\u4f7f\u7528DELETE\u8a9e\u53e5\u522a\u9664\u4e86\u8a72\u884c\u3002\u9019\u6bb5\u4ee3\u78bc\u5c55\u793a\u4e86\u5982\u4f55\u5728Node.js\u74b0\u5883\u4e2d\u4f7f\u7528JavaScript\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-eApERVsXbz\">\u6ce8\u610f\u4e8b\u9805<\/h3>\n<ul>\n<li>\u78ba\u4fdd\u5728\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u4e1f\u5931\u3002<\/li>\n<li>\u5728\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u61c9\u8a72\u5c0d\u7528\u6236\u7684\u64cd\u4f5c\u9032\u884c\u9a57\u8b49\uff0c\u4ee5\u9632\u6b62\u672a\u7d93\u6388\u6b0a\u7684\u6578\u64da\u522a\u9664\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-eApERVsXbz\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528JavaScript\u548cNode.js\u4f86\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5f8c\u4e00\u884c\u6578\u64da\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\u3002\u901a\u904e\u6b63\u78ba\u7684SQL\u67e5\u8a62\u548c\u4ee3\u78bc\u5be6\u73fe\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f\u9078\u64c7 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u60a8\u7684\u9805\u76ee\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528JavaScript\u8f15\u9b06\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5f8c\u4e00\u884c\u6578\u64da\uff0c\u7c21\u5316\u6578\u64da\u7ba1\u7406\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61867","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61867","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61867"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61867\/revisions"}],"predecessor-version":[{"id":61868,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61867\/revisions\/61868"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61867"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61867"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}