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The "Adding Interactivity" Lesson is part of the full, Choosing a JavaScript Framework course featured in this preview video. Here's what you'd learn in this lesson:

Until now, the application is only displaying the todos in our array. Brian adds a few functions that will add todos and remove todos when the user interacts with the application. He notes that any modifications to the todos array are automatically reflected in the UI because of the two-way data binding.

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