How can I debug JavaScript errors effectively?
An example of an AI chatbot conversation about debugging JavaScript errors.
I'm getting a 'TypeError' in my JavaScript code. How do I fix it?
A 'TypeError' usually means you're trying to use a value in an inappropriate way. Can you share the code snippet?
Sure, here it is: let result = myArray.map(x => x * 2); but myArray is undefined.
The error occurs because myArray is not defined. Make sure to initialize it before using it in the map function.
Got it! What if I want to check if myArray is defined before mapping?
You can use an if statement: if (myArray) { let result = myArray.map(x => x * 2); } This checks if myArray is truthy.
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