Modern JavaScript from the Beginning - Second Edition - Array.map Method
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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10 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the purpose of the filter method in JavaScript arrays?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
How does the map method differ from the filter method?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain how to create a new array of doubled numbers using the map method.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the significance of using the return keyword in the map function?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Describe how to use the forEach method to achieve similar results as the map method.
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
How can you create an array of company names from an array of company objects?
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the process to create an array of objects containing company names and categories?
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