Mobile Development and JavaScript | Module 2

Course Name: Mobile Development and JavaScript

Course Link: Mobile Development and JavaScript

These are Mobile Development and JavaScript Week 2 Coursera Answers

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Module 2 Quiz: The Building Blocks of a Program

Q1. Which part of the below statement is an object?
const car = {type:”Ford”, model:”Model T”, color:”white”};

• type
• color
• car
• model

Answer: car

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Q2. True or False: SyntaxError in JavaScript cannot be caught using the try-catch block.

• True
• False

Answer: False

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Q3. What value is printed when the following code runs?
var burger = [“bun”, “beef”, “lettuce”, “tomato sauce”, “onion”, “bun”]; console.log(burger[2]);

• bun
• beef
• tomato sauce
• lettuce

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These are Mobile Development and JavaScript Week 2 Coursera Answers

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Q4. In the following code, what data type does start: function() {} represent?
var bicycle = { wheels: 2, start: function() { }, stop: function() { } };

• Array
• Method
• Property
• Object

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Q5. When the error is thrown, the code will do what?
try { throw new Error(); console.log(‘Hello’); } catch(err) { console.log(‘Goodbye’); }

• Execute the code inside the throw statement.
• Execute the code inside the catch statement.
• Print the type of error to the console.
• Print new Error to the console.

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Q6. Which of the following is used to run a block of code that may output an error without stopping the program?

• throw
• catch
• ErrorHandling
• try

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These are Mobile Development and JavaScript Week 2 Coursera Answers

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Q7. When the following code runs, what will print out?
try { throw new Error(); console.log(‘Hello’); } catch(err) { console.log(‘Goodbye’); }

• Hello
• Goodbye
• err
• catch failed

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Q8. What error gets thrown when, for example, one tries to use variables that haven’t been declared anywhere?

• TypeError
• ReferenceError
• RangeError
• SyntaxError

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Q9. Which of the below will be the output of the following code?
(10).toString(100);

• .1
• SyntaxError
• RangeError
• undefined

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These are Mobile Development and JavaScript Week 2 Coursera Answers

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Q10. The statement below evaluates to which of the following?
const value = null;
console.log(value);

• value
• null
• undefined
• error

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Q10. What will be printed when the following code runs?
var result; console.log(result);

• result
• null
• undefined
• 0

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Q12. Which of the following statements will evaluate to false?

• null == undefined;
• !null;
• null === undefined;
• null === null;

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These are Mobile Development and JavaScript Week 2 Coursera Answers

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Q13. A method returns undefined if the variable that is being evaluated does not have which of the following?

• A null value
• Correct syntax
• A defined value
• A method cannot return undefined.

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Q14. What represents the intentional absence of any object value?

• undefined
• noValue
• null
• “”

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Q15. Which of the following is used to output an error and pass control to the first catch block?

• ErrorHandling
• try
• err
• throw

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These are Mobile Development and JavaScript Week 2 Coursera Answers

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