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Algorithms 1 Computer Systems 1 Data Structures 8 JavaScript 80 Programming Languages 46 React Native 38
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Medium
18

Explain bind, call, and apply

JavaScript
Medium
18

What is function currying?

JavaScript
Medium
20

Difference between debounce and throttle?

JavaScript
Medium
18

Object.assign vs spread operator

JavaScript
Hard
28

What are generator functions?

JavaScript
Hard
28

What are Web Workers?

JavaScript
Medium
20

What is a Symbol?

JavaScript
Hard
27

Explain Proxy objects

JavaScript
Medium
19

fetch vs XMLHttpRequest

JavaScript
Medium
18

What is strict mode?

JavaScript
Medium
18

How to handle errors in promises?

JavaScript
Medium
21

Explain Array.reduce()

JavaScript
Medium
20

Object.freeze vs Object.seal

JavaScript
Easy
21

instanceof vs typeof

JavaScript
Easy
24

What is the difference between localStorage and sessionStorage?

JavaScript
Medium
24

Explain the Nullish Coalescing Operator (??)

JavaScript
Medium
21

What is Optional Chaining (?.)?

JavaScript
Hard
28

How does requestAnimationFrame differ from setTimeout?

JavaScript
Hard
28

Explain Service Workers and their use cases

JavaScript
Medium
18

What are Web Components?

JavaScript