FAQ   React.js FAQ


Topic Replies Views Activity
About the React.js FAQ category
0 715 December 30, 2017
Can we access state properties using bracket notation?
q-a
2 8448 January 19, 2021
How can we access the individual elements or values of a prop which is an array or object?
q-a
5 9014 September 29, 2021
What is an HTML-like JSX element?
q-a
2 7348 May 2, 2020
Why sometimes import has {} and sometimes doesn't?
q-a
4 10478 November 14, 2020
Is using a variable to set an attribute better practice than using object properties to set attributes?
q-a
6 8873 October 11, 2020
Can I call multiple event handlers in response to a single event?
q-a
17 29677 August 31, 2021
What does JSON.stringify do?
q-a
4 16584 April 4, 2022
What happens if I don't use this when referencing a method from inside a class?
q-a
12 6737 January 27, 2022
When should I use logic inside of render vs logic inside of the class declaration?
q-a
3 8120 November 21, 2020
Is the ReactDOM render() method the same as the component render() method?
q-a
0 7842 January 3, 2019
Why can I use a ternary operator inside a JSX expression but not an if statement?
q-a
12 11060 December 10, 2021
Can we return multiple elements in the render function?
q-a
10 13094 February 10, 2022
Are there any other HTML attributes that are reserved keywords in JavaScript that I wont be able to use in JSX?
q-a
6 13189 July 21, 2021
What if the specified container already has contents when rendering to it?
q-a
5 6714 April 23, 2021
Should we always set defaultProps for every prop value?
q-a
0 8043 January 29, 2019
Why do I get errors when I pass the method with () to the attribute?
q-a
6 3853 May 7, 2022
What is the full lifecycle and methods of a component?
q-a
4 3300 March 2, 2022
Can we pass the entire state object to the child component?
q-a
4 7636 January 30, 2022
Why don't we set the event listener attribute value to a function call?
q-a
9 10266 June 6, 2022
Can we pass multiple event handlers as props and choose a specific one to attach to a child component?
q-a
1 9853 March 27, 2022
Why don't I need a ReactDOM.render() for each component?
q-a
7 14547 March 16, 2022
Can I inject other programming languages besides JavaScript into JSX?
q-a
11 11930 December 17, 2021
Can I change a component's attribute values using a conditional statement in the render function?
q-a
8 5462 April 24, 2021
Is there a way to work with the individual children of a component?
q-a
7 7825 July 26, 2021
Is it only possible to update a sibling component through a parent?
q-a
1 2242 June 18, 2021
Can we only create one component instance at a time?
q-a
2 7778 May 2, 2020
Why would we want to use variables to set a component's attributes?
q-a
0 5314 March 23, 2019
When should I use an if statement, a ternary operator, or the && operator?
q-a
0 8739 March 13, 2019
When should I assign a variable to a JavaScript expression that I want to use in a JSX expression?
q-a
0 7916 February 17, 2019