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Objects in JavaScript - 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
Q1Which of the following methods is used to add a new property to an object in JavaScript?
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Q2How do you destructure an object in JavaScript?
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Q3What is destructuring in JavaScript?
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Q4What is the purpose of the Object.prototype.hasOwnProperty() method in JavaScript?
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Q5What does the Object.prototype property represent in JavaScript?
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Q6Which of the following methods can be used to check if a certain property exists in an object i...
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Q7Which built-in method is used to serialize an object into a JSON string in JavaScript?
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Q8What does it mean to serialize an object in JavaScript?
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Q9Which method can be used to create a new object that inherits properties from an existing objec...
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Q10How can you extend an object in JavaScript?
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Q11What is the difference between using for...in loop and Object.keys() to enumerate properties of...
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Q12How can you enumerate all the properties of an object in JavaScript?
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Q13How can you modify the value of an existing property in an object?
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Q14How can you add a new property to an object in JavaScript?
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Q15How can you set the value of a property in an object in JavaScript?
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Q16How can you query a property value from an object in JavaScript?
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Q17Which of the following methods can be used to create objects with specified prototypes in JavaS...
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Q18Which of the following methods can be used to create objects in JavaScript?
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Q19How can you check if an object has a specific property in JavaScript?
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Q20Which of the following methods can be used to add or modify properties of an object in JavaScri...
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Q21Which of the following methods is used to define an object in JavaScript?
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Q22How do you define an object in JavaScript?
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Q23What happens if you try to use the `this` keyword outside of any object?
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Q24What does the `this` keyword refer to in JavaScript?
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Q25Which of the following statements is true about accessing object properties in JavaScript?
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Q26How can you access the value of a property in an object in JavaScript?
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Q27How can you delete a property from an object in JavaScript?
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Q28Which of the following statements about constructor functions in JavaScript is true?
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Q29What is a constructor function in JavaScript?
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Q30Which method allows explicit object coercion in JavaScript?
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