Question

我正在尝试将SQLite数据库与javascript建立连接。我究竟做错了什么？我在运行以下代码时遇到问题。当我尝试在节点上运行.js时，效果很好。当我尝试通过浏览器在HTML文件上运行它时，它失败了。这是我得到的错误：

Uncaught ReferenceError: require is not defined
    at changeRequest.js:1

Uncaught ReferenceError: Cannot access 'sqlite3' before initialization
    at test (changeRequest.js:8)
    at HTMLButtonElement.onclick (changeRequest - Kopie.html:15)
test @ changeRequest.js:8
onclick @ changeRequest - Kopie.html:15

我将不胜感激。

    <!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>

  </head>
  <body>
    <p>Hier werden die Change Requests sichtbar sein</p>


    <script src="changeRequest.js"></script>
    <script src="require.js"></script>

    <button onclick="test()" >test</button>
  </body>
</html>

const sqlite3 = require('sqlite3').verbose();


function test ()
{

// open the database
let db = new sqlite3.Database('./changeRequestDB.db', sqlite3.OPEN_READWRITE, (err) => {
    if (err) {
      console.error(err.message);
    }
    console.log('Connected to the chinook database.');
  });

  db.serialize(() => {
    db.each(`SELECT id as id,
                    name as name
             FROM test`, (err, row) => {
      if (err) {
        console.error(err.message);
      }
      console.log(row.id + "\t" + row.name);
    });
  });

  db.close((err) => {
    if (err) {
      console.error(err.message);
    }
    console.log('Close the database connection.');
  });
}
test();

初始化前无法访问“ sqlite3”

0 个答案: