FAQ   JavaScript FAQ


Topic Replies Views Activity
About the JavaScript FAQ category
1 854 January 22, 2021
Why can't I use crewMember.name?
q-a
107 20834 January 16, 2022
How would you know when to use factory functions?
20 15157 January 24, 2022
How does bounceBubbles() work?
47 247504 October 19, 2021
Is Javascript case sensitive?
q-a
27 176194 December 28, 2021
When should I use the defer attribute on a <script> element in the <head> vs. using a <script> element at the end of the <body>?
q-a
6 7027 January 18, 2022
Do we have to always use {} when creating a variable through destructuring?
q-a
19 10903 December 23, 2021
Why would the length of a sentence be useful to know?
introduction ,  q-a
33 47543 January 20, 2022
Why do I need a setter, if I am using _ to not have the property changed by others?
31 13705 April 30, 2021
Do I need to use a semicolon?
q-a
17 113454 September 15, 2021
Clarifying Arrow Function Notation
functions
54 12357 December 30, 2021
What is the difference between triple equals, ===, and double equals, ==, in JavaScript?
q-a
4 26751 September 8, 2021
What are advanced objects?
q-a
6 16258 January 8, 2022
How could I use a switch statement for this lesson?
q-a
115 12807 January 9, 2022
How do I handle JS (or other computer science problems) I'm not sure how to solve?
q-a
3 6113 September 8, 2021
What's the difference between React and ReactDOM?
q-a
3 20126 March 26, 2021
Why do I need to use `return`?
functions ,  q-a
85 23254 January 26, 2022
Does `this` always refer to an object?
q-a
23 10415 January 22, 2022
Is it best practice to use string concatenation or string interpolation? Why?
q-a
4 8455 December 23, 2021
Why do Arrow functions exist and how could you use them in objects if you wanted to?
21 17257 November 4, 2021
What is the difference between printing `3 + 4` and `'3 + 4'`?
introduction
48 39164 January 20, 2022
What does this ${} syntax do?
q-a
36 31912 July 22, 2021
Why do we need parentheses around multi-line JSX expressions?
q-a ,  intro-to-jsx
7 13794 March 29, 2021
Is property value shorthand in objects compatible with all browsers?
11 9408 March 2, 2021
What are other uses of functions as data?
q-a
14 12865 April 15, 2021
FAQ: Why can't I console log mutualfollowers.push()
57 34406 December 28, 2021
When should we use callbacks vs directly calling a function?
q-a
2 24487 December 9, 2021
FAQ: Welcome to Codecademy! - Welcome to Codecademy!
20 16095 October 25, 2021
When to use `var` or `let`?
introduction ,  q-a
23 16631 August 26, 2021
Why do we write `if(sale)` instead of `if(sale===true)`?
conditionals ,  q-a
44 26043 January 16, 2022