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feat(curriculum): create JavaScript loop quiz (#56584)
Co-authored-by: Naomi <accounts+github@nhcarrigan.com> Co-authored-by: Ilenia <26656284+ilenia-magoni@users.noreply.github.com>
This commit is contained in:
Okeke Chioma Princess
co-authored by
Naomi
Ilenia
Naomi
Ilenia
parent
bd7c8ade83
commit
41287b7e72
+179
-100
@@ -17,439 +17,518 @@ Answer all of the questions below correctly to pass the quiz.
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#### --text--
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Placeholder question
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Which of the following best describes iteration?
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#### --distractors--
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Placeholder distractor 1
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It is the process of writing code repeatedly until it works correctly.
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---
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Placeholder distractor 2
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It is a technique for storing data in consecutive memory locations.
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---
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Placeholder distractor 3
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It is the process of sending signals between components to establish a connection.
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#### --answer--
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Placeholder answer
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It is the process of repeating a set of instructions multiple times until a condition is met.
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### --question--
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#### --text--
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Placeholder question
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What technique is used for iterations in programming?
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#### --distractors--
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Placeholder distractor 1
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Recursion
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---
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Placeholder distractor 2
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Conditionals
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---
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Placeholder distractor 3
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Compilation
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#### --answer--
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Placeholder answer
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Looping
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### --question--
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#### --text--
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Placeholder question
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Which of the following is not an iterable object?
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#### --distractors--
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Placeholder distractor 1
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Map
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---
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Placeholder distractor 2
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String
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---
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Placeholder distractor 3
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Array
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#### --answer--
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Placeholder answer
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Math object
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### --question--
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#### --text--
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Placeholder question
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Which of the following is not a type of loop supported in JavaScript?
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#### --distractors--
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Placeholder distractor 1
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`for` loop
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---
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Placeholder distractor 2
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`while` loop
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---
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Placeholder distractor 3
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`for...in` loop
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#### --answer--
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Placeholder answer
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`if...else` loop
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### --question--
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#### --text--
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Placeholder question
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What is the correct order of the `for` loop declaration?
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#### --distractors--
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Placeholder distractor 1
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```javascript
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for (condition; increment/decrement; initialization)
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statement;
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```
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---
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Placeholder distractor 2
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```javascript
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for (increment/decrement; condition; initialization)
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statement;
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```
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---
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Placeholder distractor 3
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```javascript
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for (initialization; increment/decrement; condition)
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statement;
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```
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#### --answer--
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Placeholder answer
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```javascript
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for (initialization; condition; increment/decrement)
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statement;
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```
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### --question--
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#### --text--
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Placeholder question
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Which loop executes the code block once, before checking if the condition is true, and will continue working as long as the condition remains true?
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#### --distractors--
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Placeholder distractor 1
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`while` loop
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---
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Placeholder distractor 2
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`for...of` loop
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---
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Placeholder distractor 3
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`for...in` loop
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#### --answer--
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Placeholder answer
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`do...while` loop
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### --question--
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#### --text--
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Placeholder question
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Which loop loops over the values of an iterable object?
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#### --distractors--
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Placeholder distractor 1
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`for...in` loop
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---
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Placeholder distractor 2
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`for` loop
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---
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Placeholder distractor 3
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`do...while` loop
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#### --answer--
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Placeholder answer
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`for...of` loop
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### --question--
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#### --text--
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Placeholder question
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Which of the following best defines an infinite loop?
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#### --distractors--
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Placeholder distractor 1
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A loop that runs until the condition becomes false.
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---
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Placeholder distractor 2
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A loop that runs once and then is terminated.
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---
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Placeholder distractor 3
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A loop that automatically stops after a fixed number of iterations.
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#### --answer--
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Placeholder answer
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A loop that continues to run indefinitely because the termination condition is never met or is absent.
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### --question--
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#### --text--
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Placeholder question
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For iterating over an array, which loop is not the best?
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#### --distractors--
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Placeholder distractor 1
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`for` loop
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---
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Placeholder distractor 2
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`for...of` loop
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---
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Placeholder distractor 3
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`for...in` loop
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#### --answer--
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Placeholder answer
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`while` loop
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### --question--
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#### --text--
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Placeholder question
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Which loop is the best for iterating objects?
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#### --distractors--
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Placeholder distractor 1
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`for...of` loop
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---
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Placeholder distractor 2
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`do...while` loop
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---
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Placeholder distractor 3
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`for` loop
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#### --answer--
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Placeholder answer
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`for...in` loop
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### --question--
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#### --text--
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Placeholder question
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What is the difference between the `for...in` loop and the `for...of` loop?
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#### --distractors--
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Placeholder distractor 1
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`for...in` loop iterates over property values, while the `for...of` loop iterates over property names (keys).
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---
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Placeholder distractor 2
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`for...in` loops create new properties, while `for...of` loops modify existing properties.
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---
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Placeholder distractor 3
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`for...in` loops can only be used with strings, while the `for...of` loops can be used with both strings and numbers.
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#### --answer--
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Placeholder answer
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`for...in` loop iterates over property names (keys), while the `for...of` loop iterates over property values.
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### --question--
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#### --text--
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Placeholder question
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To prevent an infinite loop from occurring, all but one of these are expected to be part of the loop used.
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#### --distractors--
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Placeholder distractor 1
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Initialization of variable.
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---
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Placeholder distractor 2
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A loop condition that eventually gives false.
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---
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Placeholder distractor 3
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Increment/decrement logic.
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#### --answer--
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Placeholder answer
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A loop condition that always returns true.
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### --question--
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#### --text--
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Placeholder question
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What statement can be used to break out of a loop completely?
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#### --distractors--
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Placeholder distractor 1
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The `continue` statement
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---
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Placeholder distractor 2
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The `label` statement
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---
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Placeholder distractor 3
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The `skip` statement
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#### --answer--
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Placeholder answer
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The `break` statement
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### --question--
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#### --text--
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Placeholder question
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Which statement can be used to skip the current iteration and move to the next iteration?
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#### --distractors--
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Placeholder distractor 1
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The `break` statement
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---
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Placeholder distractor 2
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The `label` statement
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---
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Placeholder distractor 3
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The `return` statement
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#### --answer--
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Placeholder answer
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The `continue` statement
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### --question--
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#### --text--
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Placeholder question
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It is generally recommended to avoid using the `for...in` loop in JavaScript. What is the reason for that?
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#### --distractors--
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Placeholder distractor 1
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It only works with arrays and not with objects.
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---
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Placeholder distractor 2
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It is the best way to iterate over large objects.
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---
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Placeholder distractor 3
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It guarantees the order of property enumeration.
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#### --answer--
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Placeholder answer
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It could enumerate over inherited properties of an object.
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### --question--
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#### --text--
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Placeholder question
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What will be the output of the code below?
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```javascript
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for (let i = 1; i < 6; i++) {
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if (i === 4) break;
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console.log(i);
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}
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```
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#### --distractors--
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Placeholder distractor 1
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```javascript
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1,2,3,4,5,6
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```
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---
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Placeholder distractor 2
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```javascript
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1,2,3,4,5
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```
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---
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Placeholder distractor 3
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```javascript
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1,2,3,4
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```
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#### --answer--
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Placeholder answer
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```javascript
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1,2,3
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```
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### --question--
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#### --text--
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Placeholder question
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What will be the output of the code below?
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```javascript
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const shoppingList = { tomatoes: 4, apples: 10 };
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for (const item in shoppingList) {
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console.log(item);
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}
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```
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#### --distractors--
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Placeholder distractor 1
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```javascript
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tomatoes - 4, apples - 10
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```
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---
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Placeholder distractor 2
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```javascript
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4, 10
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```
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---
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Placeholder distractor 3
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```javascript
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tomatoes:4, apples:10
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```
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#### --answer--
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Placeholder answer
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```javascript
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tomatoes, apples
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```
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### --question--
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#### --text--
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Placeholder question
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What will be the output of the code below?
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```javascript
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for (let i = 2; i <= 13; i++) {
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if (i % 2 === 0) continue;
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console.log(i);
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}
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```
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#### --distractors--
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Placeholder distractor 1
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```javascript
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2,4,6,8,10,12
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```
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---
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Placeholder distractor 2
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```javascript
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1,3,5,7,9,11,13
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```
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---
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Placeholder distractor 3
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```javascript
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1,3,5,7,9,11
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```
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#### --answer--
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Placeholder answer
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```javascript
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3,5,7,9,11,13
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```
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### --question--
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#### --text--
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Placeholder question
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What would be the output of the code below?
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```javascript
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const fruits = ["Mango", "Pineapple", "Oranges"];
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for (const fruit in fruits) {
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console.log(fruit);
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}
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```
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#### --distractors--
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Placeholder distractor 1
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```javascript
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Mango, Pineapple
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```
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---
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Placeholder distractor 2
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```javascript
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Pineapple, Oranges, Mango
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```
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---
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Placeholder distractor 3
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```javascript
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Oranges, Pineapple, Mango
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```
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#### --answer--
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Placeholder answer
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```javascript
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Mango, Pineapple, Oranges
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```
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### --question--
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#### --text--
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Placeholder question
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How many times will the code below output the string `in the loop`?
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```javascript
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let x = 0
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while (x < 5) {
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console.log("in the loop");
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}
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```
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#### --distractors--
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Placeholder distractor 1
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3 times.
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---
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Placeholder distractor 2
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4 times.
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---
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Placeholder distractor 3
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5 times.
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#### --answer--
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Placeholder answer
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Infinite.
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Block a user