Modern Web Design with HTML5, CSS3, and JavaScript - Adding Values within the JavaScript Array

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Information Technology (IT), Architecture
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University
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Hard
Wayground Content
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key difference between arrays and objects in JavaScript?
Both arrays and objects use named indexes.
Both arrays and objects use numbered indexes.
Arrays use numbered indexes, objects use named indexes.
Arrays use named indexes, objects use numbered indexes.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When should you prefer using arrays over objects?
When you need named indexes.
When you need numbered indexes and order.
When you need to store unique values.
When you want to store key-value pairs.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when you assign one array to another in JavaScript?
A new array with the same values is created.
The original array is deleted.
Only the reference to the original array is copied.
The contents of the array are copied.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you create a separate copy of an array in JavaScript?
By using a for loop.
By using the Array.from() method.
By using the slice() method.
By using the assignment operator.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of using the Array.from() method?
It creates a new array with the same reference.
It creates a reference to the original array.
It creates a new array with copied values.
It deletes the original array.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common misconception about arrays in JavaScript?
Arrays cannot be copied.
Arrays are a type of object.
Arrays can only store numbers.
Arrays are not objects.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will be covered in the upcoming lessons?
Advanced object manipulation techniques.
How to create functions in JavaScript.
The history of JavaScript.
Built-in methods for arrays.
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