SOLVE JS Error ❌ Cannot Read Properties of Null (addEventListener) | JavaScript Fix

In this video, we’ll solve one of the most common JavaScript errors that every beginner faces:
❌ Cannot read properties of null (reading 'addEventListener')

This error usually appears when JavaScript tries to access an HTML element that doesn’t exist yet or is loaded incorrectly.
By the end of this video, you’ll clearly understand why this error happens and how to fix it properly.

🔍 What You’ll Learn in This Video
✔ Why the “Cannot read properties of null” error occurs
✔ What null actually means in JavaScript
✔ How DOM loading affects JavaScript execution
✔ Common beginner mistakes with addEventListener
✔ 3 proven solutions to fix this error
✔ Best practices to avoid this issue in future project

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