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JavaScript ES6 - Review

Review

Discover your progress and identify completed questions and those awaiting your input. Dive back into any unanswered quizzes, refine your knowledge, and keep track of your learning journey with ease!

No.QuestionStatus
Q1What does the `findIndex()` method in JavaScript Array do?
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Q2Consider the array below. What will be the output of the `find() method`? ``` const numbers...
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Q3What is the value of the following JavaScript ES6 code: ``` 'JavaScript'.startsWith('Java')?...
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Q4Given the following code, what will be the output? ``` let string = "Hello, world!"; conso...
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Q5What is the output of the following code? ``` const speed = 'quick'; console.log(`The ${sp...
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Q6What is the main usage of the `Symbol` data type in ES6?
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Q7Which of the following statements about `Symbols` in JavaScript is false?
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Q8What is the final value of `obj` if we run the following code snippet? ``` const obj = { foo...
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Q9What is a valid statement about `constants` in JavaScript ES6?
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Q10What is a necessary condition for using the `await` keyword in JavaScript ES6?
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Q11What is a `Promise` in JavaScript ES6?
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Q12Examine the following JavaScript ES6 code: ``` // greet.js export function sayHello(name) ...
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Q13What is a `module` in ES6?
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Q14Which keyword is used to implement inheritance in ES6?
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Q15What is a `class` in ES6?
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Q16What is `destructuring assignment` in JavaScript ES6?
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Q17What is the `rest operator` in JavaScript?
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Q18How can the `spread operator` be used to concatenate two arrays in JavaScript ES6?
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Q19What does the `spread operator` (...) do in JavaScript ES6?
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Q20Which of the following is a valid example of using default function parameters in ES6?
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Q21How can you define `default function parameters` in ES6?
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Q22What are `default function parameters` in ES6?
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Q23How can you access the interpolated values inside a tagged template function in ES6?
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Q24What are `tagged templates` in ES6 used for?
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Q25What will be the output of the following code snippet? ``` const name = 'John'; const age ...
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Q26Which of the following statements about `template literals` in ES6 is not true?
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Q27What are the benefits of using `arrow functions` in JavaScript?
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Q28What is an `arrow function`?
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Q29What is the output of the following code? ``` const numbers = [1, 2, 3, 4, 5]; const squ...
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Q30What is the syntax for declaring an arrow function in ES6?
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Q31Which of the following statements is true about block-scoped declarations using the `let` and `...
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Q32What is the difference between using the keywords `let` and `const` for block-scoped declaratio...
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