FAQ   JavaScript FAQ


Topic Replies Views Activity
About the JavaScript FAQ category
1 974 January 22, 2021
Why can't I use crewMember.name?
q-a
111 25134 November 3, 2022
How would you know when to use factory functions?
25 18551 February 15, 2022
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
10 8890 April 15, 2022
Why would the length of a sentence be useful to know?
introduction ,  q-a
39 58581 October 25, 2022
What are advanced objects?
q-a
7 19141 April 20, 2022
Is Javascript case sensitive?
q-a
33 212031 November 21, 2022
How could I use a switch statement for this lesson?
q-a
120 15761 April 13, 2022
Do we have to always use {} when creating a variable through destructuring?
q-a
19 12239 December 23, 2021
Do I need to use a semicolon?
q-a
23 130744 November 21, 2022
Why do I need a setter, if I am using _ to not have the property changed by others?
33 15940 August 6, 2022
Clarifying Arrow Function Notation
functions
54 14798 December 30, 2021
How does bounceBubbles() work?
48 267496 April 27, 2022
Why do I need to use `return`?
functions ,  q-a
94 27608 November 22, 2022
What is the difference between printing `3 + 4` and `'3 + 4'`?
introduction
51 49275 October 25, 2022
FAQ: Why can't I console log mutualfollowers.push()
62 41731 September 24, 2022
How do I handle JS (or other computer science problems) I'm not sure how to solve?
q-a
5 7179 April 9, 2022
Does `this` always refer to an object?
q-a
27 12784 March 22, 2022
What is the difference between triple equals, ===, and double equals, ==, in JavaScript?
q-a
4 32685 September 8, 2021
What does this ${} syntax do?
q-a
38 53594 November 15, 2022
Why do we need parentheses around multi-line JSX expressions?
q-a ,  intro-to-jsx
8 16503 July 4, 2022
Is it best practice to use string concatenation or string interpolation? Why?
q-a
4 10908 December 23, 2021
When should we use callbacks vs directly calling a function?
q-a
2 28912 December 9, 2021
What's the difference between React and ReactDOM?
q-a
3 23996 March 26, 2021
What is the difference between document.write and console.log?
q-a
35 147136 November 26, 2022
How does Javascript handle a negative modulo? (`-5 % 20`)
introduction ,  q-a
33 41858 August 19, 2022
What else can JavaScript be used for?
4 10479 August 8, 2022
Why do Arrow functions exist and how could you use them in objects if you wanted to?
28 19484 April 21, 2022
What are other uses of functions as data?
q-a
14 14731 April 15, 2021
Is property value shorthand in objects compatible with all browsers?
11 10674 March 2, 2021