js_flashcards_strict_mode

Question 1

What is JavaScript Strict Mode, and how do you enable it?

Answer 1

Strict Mode restricts JavaScript to catch common mistakes and unsafe actions. Enable with ‘use strict’; at start of script or function.

Question 2

Three behaviors different in strict vs non-strict mode?

Answer 2

1. Accidental globals throw errors.
2. this is undefined in functions without context.
3. Assigning to read-only properties throws errors.

Question 3

Why use meaningful naming conventions?

Answer 3

Improves readability, maintainability, and collaboration.

Question 4

Why is consistent indentation important?

Answer 4

It structures code visually and improves readability.

Question 5

How do ES Modules improve code?

Answer 5

Enable explicit import/export, enforce modularity, prevent naming collisions.