JavaScript FAQ

Topic	Replies	Views	Activity
Is property value shorthand in objects compatible with all browsers?	11	12643	March 2, 2021
Is there a power operator in JavaScript? q-a	0	6246	October 7, 2018
When to use `var` or `let`? introduction , q-a	27	28683	October 24, 2023
Whats the different between two (`==`) and three (`===`) equal signs? conditionals , q-a	43	53703	May 8, 2023
Do I have to use valid HTML tags when creating JSX elements? q-a	2	16706	May 14, 2023
Why do we write `if(sale)` instead of `if(sale===true)`? conditionals , q-a	51	43156	May 6, 2023
Why do Arrow functions exist and how could you use them in objects if you wanted to?	28	22999	April 21, 2022
What are other uses of functions as data? q-a	14	17150	April 15, 2021
Why should I use .forEach() vs a for loop? q-a	13	7611	November 3, 2023
How useful are Built-in object methods?	16	9457	June 3, 2022
FAQ: Welcome to Codecademy! - Welcome to Codecademy!	21	18764	April 9, 2023
Why would we use string concatenation? introduction , q-a	41	66126	March 28, 2022
Why do I need to create a variable to store a module that is imported using require()? q-a	2	5890	July 2, 2020
Why would we want to put JavaScript in our JSX? q-a	0	14608	February 17, 2019
FAQ: Objects - Pass By Reference	199	17754	November 8, 2023
Why would you want to prevent code lines from running by using comments? general , q-a	44	66779	April 5, 2023
Can I find the current date using JS? q-a	46	22067	March 10, 2023
What does the send() method do?	4	11732	December 6, 2021
What other types of responses does the XMLHttpRequest API support?	0	5098	March 7, 2019
Why do you need to register to use an API?	9	8031	July 26, 2023
Is a JSX element the same thing as an HTML element? q-a	4	17467	June 21, 2023
What is the difference between a property and a method, and when do I need to use parenthesis? introduction , q-a	44	33615	March 8, 2023
When should you use single quotes or double quotes for strings?	33	105411	November 22, 2021
Does the order of query parameters matter?	1	7599	June 21, 2021
How does a URL shortener work?	12	13235	February 18, 2021
What is an advantage of making a website asynchronous?	5	8656	September 6, 2020
Why did we pass an argument to xhr.send() for a POST request but not for GET?	2	5863	July 23, 2020
Difference between a property and a method? introduction , q-a	52	56472	August 16, 2023
FAQ: Welcome to Codecademy! - Write some code!	23	17450	April 27, 2023
Why use a variable as the first argument in ReactDOM.render() instead of a JSX expression? q-a	7	11448	October 25, 2022