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The "Challenge 1: Cannot Read Property" Lesson is part of the full, Debugging and Fixing Common JavaScript Errors course featured in this preview video. Here's what you'd learn in this lesson:

In this challenge, students need to identify and fix a "Cannot Read Property" bug.

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Transcript from the "Challenge 1: Cannot Read Property" Lesson

[00:00:00]
>> So now I'm gonna turn it over. There's a second part of this book. Actually fixing that book. So we're gonna take ten minutes and do an exercise. This is exercise number 1 in the exercises folder. If you haven't already, it'll show you how to make the changes to add workspaces and add the prevent default.

[00:00:21] And then figure out why are we getting cannot find whatever the error was. Cannot read property destroy of undefined. Let's take ten minutes, see if you can figure it out. After that, we'll come back together and we'll solve it together.