What are the benefits of using optional chaining in JavaScript?
An example of an AI chatbot conversation about the benefits of optional chaining in JavaScript.
What are the benefits of using optional chaining in JavaScript?
Optional chaining allows you to safely access deeply nested properties without having to check each level for null or undefined.
Can you give me an example of how it works?
Sure! Instead of writing obj && obj.prop && obj.prop.subProp, you can simply use obj?.prop?.subProp.
What happens if the property doesn't exist?
If the property doesn't exist, optional chaining will return undefined instead of throwing an error.
Are there any performance implications?
Generally, optional chaining is efficient, but like any feature, it should be used judiciously in performance-critical code.
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