Using JavaScript and JSON in Django | Week 2

Course Name: Django for Everybody

Sub-course: Using JavaScript and JSON in Django

Course Link: Django for Everybody

Sub-course Link: Django Features and Libraries

These are Using JavaScript and JSON in Django Week 2 Answers Coursera Quiz

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JavaScript OO

Q1. Which of the following is a template that defines the shape of an object that is created?

• Message
• Inheritance
• Method
• Instance
• Class

Answer: Class

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Q2. Which of the following describes a feature which we would expect from a programming language that supported first class functions?

• The ability to return a value from a function
• The ability to have a variable number of parameters when calling a function
• The ability to define a function and assign the function to a variable
• The ability to omit parameters and have the omitted parameters default to a value
• The ability for a function not to return a value (i.e., void functions)

Answer: The ability to define a function and assign the function to a variable

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These are Using JavaScript and JSON in Django Week 2 Answers Coursera Quiz

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Q3. What keyword / predefined variable is used in a JavaScript class definition to refer to the “current instance” of the class?

• $this
• _self
• self
• this
• me

Answer: this

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Q4. What do these two statements in JavaScript accomplish?
data.stuff = “hello”; data[‘stuff’] = “hello”;

• These two statements accomplish the same thing
• The first statement creates an object and the second creates a dictionary
• The first statement is a syntax error in JavaScript
• The second statement is a syntax error in JavaScript

Answer: These two statements accomplish the same thing

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These are Using JavaScript and JSON in Django Week 2 Answers Coursera Quiz

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Q5. How is the constructor defined in a JavaScript class compared to how the constructor is defined in a Python class?

• The Python constructor method is called _construct() and the JavaScript constructor method is called construct()
• A Python constructor is a method named init() and a JavaScript constructor is code in the outer function definition
• The Python and JavaScript constructor patterns are the same
• JavaScript does not support the notion of running a “constructor” when objects are created

Answer: A Python constructor is a method named init() and a JavaScript constructor is code in the outer function definition

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These are Using JavaScript and JSON in Django Week 2 Answers Coursera Quiz

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