Top 05 JavaScript Interview Questions (2024)

1. What do you understand about JavaScript?

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2. What is a closure in JavaScript, and how does it work?

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3. How do you create an object in JavaScript?

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4. What is the ‘this’ keyword in JavaScript?

[{"selector":"#anim-11a48b87-a523-418d-8651-94b5fa197b2e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-c4675f7a-3702-4df0-83dc-fc21548ec564","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b2ffff87-9131-46f7-9917-ee0295872fdf","keyframes":{"transform":["translate3d(-101.31233%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b0a71eee-e80b-423b-bcdd-e989effdf0b3","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-241d2b0b-4090-43fc-b94a-5821401e4ece","keyframes":{"transform":["translate3d(0px, 295.12680%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] The ‘this’ keyword in JavaScript refers to the currently calling object. It is commonly used in constructors to assign values to object properties. www.devstringx.com

5. What is Callback in JavaScript?

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