JS Interview #3: Optional Chaining in JavaScript in Hindi
Optional chaining is a feature in JavaScript that allows you to access the properties of an object or elements of an array without having to check whether the object or array is null or undefined first. It is represented by the ?. operator and can be used to concisely access deeply nested properties without having to write a long chain of if statements to check for null or undefined values.
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-------- TIMELINE ----------
0:00 Introduction
0:11 nullish operator
0:20 optional chaning
1:05 code explanation
2:15 non existing property
3:15 optional chaining
4:30 array example
7:10 array optional chaining
8:50 Outro
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