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What is hoisting in JavaScript?

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What is the difference between `var`, `let`, and `const` regarding block scoping?

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What does the logical OR `||` operator return in JavaScript?

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What is the output of `typeof function(){}`?

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What is the purpose of `Array.prototype.forEach()`?

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Which method creates a shallow copy of a portion of an array?

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What does `undefined == null` evaluate to?

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Which keyword is used to define a class in JavaScript?

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What does `Math.floor(4.7)` return?

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What is the purpose of the `return` statement in a function?

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What does `parseInt(‘10.9’)` return?

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Which method joins all array elements into a string?

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What is the output of `’5′ + 3` in JavaScript?

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What is a template literal in JavaScript?

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What does `Array.prototype.reduce()` do?

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What does the `new` keyword do when used with a constructor function?

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What is the output of `[1, 2, 3].includes(2)`?

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Which loop guarantees execution of its body at least once?

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