FAQ   React.js FAQ


Topic Replies Views Activity
About the React.js FAQ category
0 399 December 30, 2017
What is an HTML-like JSX element?
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2 4658 May 2, 2020
How can we access the individual elements or values of a prop which is an array or object?
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3 5124 January 26, 2021
Can we access state properties using bracket notation?
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2 5376 January 19, 2021
Why sometimes import has {} and sometimes doesn't?
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4 6804 November 14, 2020
Is using a variable to set an attribute better practice than using object properties to set attributes?
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6 5818 October 11, 2020
What does JSON.stringify do?
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1 9667 February 18, 2021
Is the ReactDOM render() method the same as the component render() method?
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0 5296 January 3, 2019
When should I use logic inside of render vs logic inside of the class declaration?
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3 5008 November 21, 2020
Can we pass the entire state object to the child component?
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3 4773 October 17, 2020
What happens if I don't use this when referencing a method from inside a class?
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10 4318 December 2, 2020
What if the specified container already has contents when rendering to it?
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4 4329 October 28, 2020
Why do I get errors when I pass the method with () to the attribute?
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5 2855 May 26, 2020
Can we return multiple elements in the render function?
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8 6655 November 21, 2020
Should we always set defaultProps for every prop value?
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0 4985 January 29, 2019
Can you set the component's state in this method?
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0 2714 January 29, 2019
Why can I use a ternary operator inside a JSX expression but not an if statement?
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9 6631 January 7, 2021
Can I call multiple event handlers in response to a single event?
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15 17823 December 2, 2020
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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3 8323 November 16, 2020
Why don't we set the event listener attribute value to a function call?
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3 6720 April 4, 2020
What is a static property?
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0 2578 February 13, 2019
Why don't I need a ReactDOM.render() for each component?
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6 9004 November 22, 2020
Can I use .forEach() to create a list of JSX elements?
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1 22245 December 6, 2019
Can we only create one component instance at a time?
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2 5152 May 2, 2020
Can you import multiple objects from a library at once?
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4 5549 January 19, 2020
Is there a way to work with the individual children of a component?
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6 4686 September 16, 2020
Why would I use React.createElement() instead of JSX?
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9 7142 November 21, 2020
Can props only be passed down the component tree?
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4 5078 December 2, 2020
How does this update the text on every change?
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1 1801 April 30, 2019
Do controlled and uncontrolled just mean stateless and stateful?
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0 2857 February 28, 2019