{"id":61869,"date":"2024-10-13T14:20:15","date_gmt":"2024-10-13T06:20:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61869\/"},"modified":"2024-10-13T14:20:15","modified_gmt":"2024-10-13T06:20:15","slug":"javascript%e8%88%87%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%80%a3%e6%8e%a5-js%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61869\/","title":{"rendered":"JavaScript\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5 (js\u9023\u63a5\u6578\u64da\u5eab)"},"content":{"rendered":"

JavaScript\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5 (js\u9023\u63a5\u6578\u64da\u5eab)<\/h1>\n

\u5728\u73fe\u4ee3\u7db2\u9801\u958b\u767c\u4e2d\uff0cJavaScript\u5df2\u7d93\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u6280\u8853\u4e4b\u4e00\u3002\u96a8\u8457\u524d\u7aef\u6280\u8853\u7684\u767c\u5c55\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u958b\u767c\u8005\u5e0c\u671b\u80fd\u5920\u76f4\u63a5\u5728\u5ba2\u6236\u7aef\u4f7f\u7528JavaScript\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528JavaScript\u9023\u63a5\u6578\u64da\u5eab\uff0c\u4e26\u4ecb\u7d39\u4e00\u4e9b\u5e38\u898b\u7684\u6280\u8853\u548c\u65b9\u6cd5\u3002<\/p>\n

JavaScript\u8207\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

JavaScript\u672c\u8eab\u662f\u4e00\u7a2e\u5ba2\u6236\u7aef\u8a9e\u8a00\uff0c\u4e3b\u8981\u7528\u65bc\u7db2\u9801\u7684\u4e92\u52d5\u548c\u52d5\u614b\u6548\u679c\u3002\u7136\u800c\uff0c\u6578\u64da\u5eab\u901a\u5e38\u904b\u884c\u5728\u4f3a\u670d\u5668\u7aef\uff0c\u9019\u5c31\u9700\u8981\u4e00\u7a2e\u4e2d\u4ecb\u6280\u8853\u4f86\u5be6\u73fe\u5169\u8005\u4e4b\u9593\u7684\u901a\u4fe1\u3002\u5e38\u898b\u7684\u505a\u6cd5\u662f\u4f7f\u7528\u4f3a\u670d\u5668\u7aef\u8a9e\u8a00\uff08\u5982Node.js\uff09\u4f86\u8655\u7406\u6578\u64da\u5eab\u7684\u8acb\u6c42\uff0c\u7136\u5f8c\u5c07\u7d50\u679c\u8fd4\u56de\u7d66\u5ba2\u6236\u7aef\u7684JavaScript\u3002<\/p>\n

\u4f7f\u7528Node.js\u9023\u63a5\u6578\u64da\u5eab<\/h2>\n

Node.js\u662f\u4e00\u500b\u57fa\u65bcChrome V8\u5f15\u64ce\u7684JavaScript\u904b\u884c\u74b0\u5883\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728\u4f3a\u670d\u5668\u7aef\u4f7f\u7528JavaScript\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Node.js\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n

1. \u5b89\u88ddMySQL\u9a45\u52d5<\/h3>\n

\u9996\u5148\uff0c\u9700\u8981\u5b89\u88ddMySQL\u7684Node.js\u9a45\u52d5\u3002\u53ef\u4ee5\u4f7f\u7528npm\u4f86\u5b89\u88dd\uff1a<\/p>\n

npm install mysql<\/code><\/pre>\n
2. \u5275\u5efa\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n
\u63a5\u4e0b\u4f86\uff0c\u5275\u5efa\u4e00\u500b\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\u7684\u4ee3\u78bc\uff1a<\/p>\n
const mysql = require('mysql');\n\nconst connection = mysql.createConnection({\n  host: 'localhost',\n  user: 'yourUsername',\n  password: 'yourPassword',\n  database: 'yourDatabase'\n});\n\nconnection.connect((err) => {\n  if (err) {\n    console.error('Error connecting: ' + err.stack);\n    return;\n  }\n  console.log('Connected as id ' + connection.threadId);\n});<\/code><\/pre>\n
3. \u57f7\u884c\u67e5\u8a62<\/h3>\n
\u4e00\u65e6\u9023\u63a5\u6210\u529f\uff0c\u5c31\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\uff1a<\/p>\n
connection.query('SELECT * FROM yourTable', (error, results, fields) => {\n  if (error) throw error;\n  console.log(results);\n});<\/code><\/pre>\n
4. \u95dc\u9589\u9023\u63a5<\/h3>\n
\u6700\u5f8c\uff0c\u8a18\u5f97\u5728\u5b8c\u6210\u64cd\u4f5c\u5f8c\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n
connection.end();<\/code><\/pre>\n
\u4f7f\u7528Fetch API\u8207RESTful API\u4ea4\u4e92<\/h2>\n
\u9664\u4e86\u76f4\u63a5\u5728\u4f3a\u670d\u5668\u7aef\u4f7f\u7528Node.js\u9023\u63a5\u6578\u64da\u5eab\u5916\uff0c\u9084\u53ef\u4ee5\u901a\u904eRESTful API\u4f86\u5be6\u73feJavaScript\u8207\u6578\u64da\u5eab\u7684\u9593\u63a5\u9023\u63a5\u3002\u9019\u7a2e\u65b9\u6cd5\u901a\u5e38\u6d89\u53ca\u5230\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n
1. \u5275\u5efaRESTful API<\/h3>\n
\u4f7f\u7528Node.js\u548cExpress\u6846\u67b6\u5275\u5efa\u4e00\u500bRESTful API\uff0c\u4e26\u5728API\u4e2d\u8655\u7406\u6578\u64da\u5eab\u7684\u8acb\u6c42\u3002<\/p>\n
const express = require('express');\nconst app = express();\nconst port = 3000;\n\napp.get('\/api\/data', (req, res) => {\n  connection.query('SELECT * FROM yourTable', (error, results) => {\n    if (error) throw error;\n    res.json(results);\n  });\n});\n\napp.listen(port, () => {\n  console.log(`Server running at http:\/\/localhost:${port}`);\n});<\/code><\/pre>\n
2. \u4f7f\u7528Fetch API\u7372\u53d6\u6578\u64da<\/h3>\n
\u5728\u5ba2\u6236\u7aef\u4f7f\u7528Fetch API\u4f86\u7372\u53d6\u6578\u64da\uff1a<\/p>\n
fetch('http:\/\/localhost:3000\/api\/data')\n  .then(response => response.json())\n  .then(data => console.log(data))\n  .catch(error => console.error('Error:', error));<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
JavaScript\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u662f\u73fe\u4ee3\u7db2\u9801\u958b\u767c\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u7121\u8ad6\u662f\u4f7f\u7528Node.js\u76f4\u63a5\u9023\u63a5\u6578\u64da\u5eab\uff0c\u9084\u662f\u901a\u904eRESTful API\u9032\u884c\u9593\u63a5\u9023\u63a5\uff0c\u958b\u767c\u8005\u90fd\u53ef\u4ee5\u9748\u6d3b\u5730\u9078\u64c7\u9069\u5408\u81ea\u5df1\u9700\u6c42\u7684\u65b9\u6cd5\u3002\u96a8\u8457\u6280\u8853\u7684\u9032\u6b65\uff0c\u9019\u4e9b\u65b9\u6cd5\u5c07\u6703\u8b8a\u5f97\u66f4\u52a0\u9ad8\u6548\u548c\u4fbf\u6377\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u4f3a\u670d\u5668\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5982\u4f55\u4f7f\u7528JavaScript\u9023\u63a5\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u6578\u64da\u64cd\u4f5c\u8207\u7ba1\u7406\uff0c\u63d0\u5347\u7db2\u9801\u61c9\u7528\u7684\u4e92\u52d5\u6027\u8207\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-61869","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61869","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=61869"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61869\/revisions"}],"predecessor-version":[{"id":61870,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61869\/revisions\/61870"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}