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← From Beginner to Expert in Fundamentals of Frontend
  • Scope & Closures
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  • JavaScript Interview Questions (30 MCQs)
← From Beginner to Expert in Fundamentals of Frontend

ES6+ to 2026

25 min read
Optional ChainingNullish CoalescingDestructuringSpread OperatorSignalsTC39

Modern JavaScript Features

JavaScript evolves every year. These features make your code more concise, readable, and less error-prone.

Optional Chaining (?.)

Safely access deeply nested properties without checking each level for null/undefined.

Nullish Coalescing (??)

Unlike || which treats 0, "", and false as falsy, ?? only falls back for null and undefined.

Signals (2026 Trend)

TC39 Signals proposal brings reactive primitives natively to JavaScript — similar to what frameworks like Solid.js and Angular use for fine-grained reactivity.

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