FAQ   React.js FAQ


Topic Replies Views Activity
About the React.js FAQ category
0 447 December 30, 2017
What is an HTML-like JSX element?
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2 5158 May 2, 2020
Can we access state properties using bracket notation?
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2 5888 January 19, 2021
Why sometimes import has {} and sometimes doesn't?
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4 7418 November 14, 2020
How can we access the individual elements or values of a prop which is an array or object?
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4 5707 April 8, 2021
Is using a variable to set an attribute better practice than using object properties to set attributes?
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6 6351 October 11, 2020
When should I use logic inside of render vs logic inside of the class declaration?
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3 5501 November 21, 2020
What does JSON.stringify do?
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2 10474 April 30, 2021
What happens if I don't use this when referencing a method from inside a class?
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10 4722 December 2, 2020
Is the ReactDOM render() method the same as the component render() method?
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0 5715 January 3, 2019
Can we pass the entire state object to the child component?
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3 5189 October 17, 2020
Can I call multiple event handlers in response to a single event?
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15 20574 December 2, 2020
Why can I use a ternary operator inside a JSX expression but not an if statement?
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10 7256 April 16, 2021
Should we always set defaultProps for every prop value?
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0 5457 January 29, 2019
Why do I get errors when I pass the method with () to the attribute?
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5 2998 May 26, 2020
What if the specified container already has contents when rendering to it?
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5 4720 April 23, 2021
Are there any other HTML attributes that are reserved keywords in JavaScript that I wont be able to use in JSX?
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4 9021 May 7, 2021
Can I change a component's attribute values using a conditional statement in the render function?
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8 3794 April 24, 2021
Why don't I need a ReactDOM.render() for each component?
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6 9844 November 22, 2020
Can we return multiple elements in the render function?
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8 7419 November 21, 2020
Do controlled and uncontrolled just mean stateless and stateful?
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0 3028 February 28, 2019
Why would we want to use variables to set a component's attributes?
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0 3903 March 23, 2019
Why would I use React.createElement() instead of JSX?
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9 7849 November 21, 2020
Why don't we set the event listener attribute value to a function call?
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3 7288 April 4, 2020
Can we only create one component instance at a time?
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2 5581 May 2, 2020
How should component classes be named?
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3 3410 September 25, 2020
Can we pass multiple event handlers as props and choose a specific one to attach to a child component?
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0 6825 February 13, 2019
What is the full lifecycle and methods of a component?
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0 1255 January 29, 2019
Can you set the component's state in this method?
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3 2990 March 16, 2021
How does this update the text on every change?
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1 1894 April 30, 2019