Quick JavaScript Crash Course - Modern and Advanced JavaScript - Nullish-Coalescing-Operator

The lecture introduces the knowledge coalescing operator, a feature in JavaScript ES2020, which helps handle cases where properties might be undefined or have default values like zero or blank strings. The operator is demonstrated using a user object with properties like ID and email. It addresses issues with default values in JavaScript, providing a more predictable way to handle such scenarios. The lecture concludes with a brief preview of the next topic.

What issues can arise when trying to access properties that may not exist on an object?

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What is the knowledge coalescing operator and when is it used?

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Explain how the knowledge coalescing operator can help with undefined properties in JavaScript.

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How does the knowledge coalescing operator differ from using logical OR in JavaScript?

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Describe a scenario where using the knowledge coalescing operator would be beneficial.

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