Data Storage Development Tutorials, Guides & Insights

  console.log(typeof "Hello"); // string
  console.log(typeof 42); // number
  console.log(typeof null); // object (this is a historical quirk)
  console.log(typeof undefined); // undefined

• Your name (string).
• Your age (number).
• Whether you are a student (boolean).

     const API_KEY = "12345";
     // API_KEY = "67890"; // Error: Assignment to constant variable

• Variables are accessible only within the block they are declared in.
• Example:

Connected to the SQLite database.
Table "accounts" created or already exists.
A row has been inserted with rowid 1
Private Key: private_key_value
Address: address_value
Decimal Number: decimalNumber_value
Has Transactions: 1
---------------------------
Database connection closed.

For your convenience, here's the complete app.js file combining all the steps: