ES6 Aside: Default Function Parameters
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Information Technology (IT), Architecture
•
University
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of using default parameters in JavaScript?
To make a function execute faster
To set a default value for a function parameter if no argument is passed
To ensure a function always returns a value
To allow a function to accept multiple data types
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the greeter function example, what happens if no argument is passed for the name parameter?
The function does not execute
The function prints 'Hello World'
The function prints 'Hello undefined'
The function throws an error
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you set a default value for a function parameter in JavaScript?
By using the 'var' keyword
By using the 'let' keyword
By using the '=' operator after the parameter name
By using the 'const' keyword
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What issue arises when trying to destructure an undefined value in JavaScript?
The program runs without any issues
The program throws a syntax error
The program throws a 'cannot destructure property' error
The program automatically assigns default values
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you prevent errors when destructuring an object that might be undefined?
By using a try-catch block
By setting a default value for the parameter as an empty object
By using a loop to check the object
By using a conditional statement
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the real-world application example, what was the cause of the server crash?
A missing function
A syntax error in the code
An incorrect API endpoint
An attempt to destructure undefined properties
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the benefit of setting a default object for destructuring in a function?
It allows the function to accept more parameters
It prevents errors when no object is passed
It ensures the function always returns a string
It makes the code run faster
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