Tag: JavaScript variable scope

Document.getElementById returns null

Posted on March 12, 2025March 12, 2025 by Zubair Shaik

document.getElementById() Returns Null in JavaScript – A Detailed Guide Introduction The document.getElementById() method is one of the most commonly used DOM (Document Object Model) methods in JavaScript. It allows you….

Java Script

Uncaught Type Error: undefined is not a function

Posted on March 12, 2025March 12, 2025 by Zubair Shaik

The “Uncaught TypeError: undefined is not a function” error in JavaScript occurs when you attempt to call something as a function, but it is actually undefined or not a function….