Lecture 15 Quiz: Objects & Scope

Note

Review before quiz: Lectures | Week 4 Content | Lab 4 | Assignment 2

Lecture 15 Self-Check

Question 1: In JavaScript, an object is best described as a:

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A. Ordered list of values

B. Key-value data structure

C. CSS selector

D. HTML attribute

Question 2: Which syntax correctly accesses a property named name from object user?

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A. user-name

B. user.name

C. user:name

D. user=name

Question 3: Which statement about scope is correct?

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A. var has block scope

B. let has block scope

C. const can be redeclared

D. var is always local

Question 4: Which statement describes scope chain behavior?

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A. Outer scope can access inner local variables

B. Inner scope can access outer variables

C. Scopes do not interact

D. Scope exists only in loops

Question 5: Which keyword is generally preferred for values that should not be reassigned?

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A. const

B. let

C. var

D. scope