FAQ   JavaScript FAQ


Topic Replies Views Activity
Is there a power operator in JavaScript?
q-a
0 5180 October 7, 2018
How does Javascript handle a negative modulo? (`-5 % 20`)
introduction ,  q-a
32 36393 March 20, 2022
What are the differences between `var` and `let`? Which should I use?
introduction ,  q-a
79 40719 March 20, 2022
What else can JavaScript be used for?
1 9245 February 21, 2022
FAQ: Welcome to Codecademy! - Welcome to Codecademy!
20 16663 October 25, 2021
Can I create my own JSX element attributes?
q-a ,  intro-to-jsx
9 12009 September 1, 2021
When to use `var` or `let`?
introduction ,  q-a
23 19423 August 26, 2021
Are there any browsers with a JSX compiler built in?
q-a
1 20997 August 4, 2020
Why do I need to create a variable to store a module that is imported using require()?
q-a
2 5636 July 2, 2020
Do I have to use valid HTML tags when creating JSX elements?
q-a
0 13381 January 18, 2019
FAQ: Objects - Pass By Reference
160 12315 May 6, 2022
How useful are Built-in object methods?
15 7241 December 14, 2021
What does the send() method do?
4 9254 December 6, 2021
What other types of responses does the XMLHttpRequest API support?
0 4793 March 7, 2019
Can I find the current date using JS?
q-a
41 16888 May 11, 2022
Why would we use string concatenation?
introduction ,  q-a
41 44671 March 28, 2022
Why should I use .forEach() vs a for loop?
q-a
7 4185 December 14, 2021
When should you use single quotes or double quotes for strings?
33 73776 November 22, 2021
How does a URL shortener work?
12 10692 February 18, 2021
Why do you need to register to use an API?
8 7140 January 21, 2021
What is an advantage of making a website asynchronous?
5 7573 September 6, 2020
Why did we pass an argument to xhr.send() for a POST request but not for GET?
2 5534 July 23, 2020
FAQ: Welcome to Codecademy! - Write some code!
22 15654 April 4, 2022
What is the difference between a property and a method, and when do I need to use parenthesis?
introduction ,  q-a
39 22973 March 28, 2022
Can I have multiple calls to ReactDOM.render() in a single JavaScript file?
q-a
25 18294 February 27, 2022
Why would you want to prevent code lines from running by using comments?
general ,  q-a
39 48804 January 17, 2022
Difference between a property and a method?
introduction ,  q-a
49 36337 January 14, 2022
Does the order of query parameters matter?
1 5328 June 21, 2021
Are there other ways to bring privacy to our Objects?
10 11749 June 11, 2021
Why use a variable as the first argument in ReactDOM.render() instead of a JSX expression?
q-a
5 8833 October 10, 2020