reactjs Archives - Page 3 of 24

javascript, Programming

IT Nursery

Update style of a component onScroll in React.js

I have built a component in React which is supposed to update its own style on window scroll to create a parallax effect. ...

June 1, 2022
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javascript, Programming

IT Nursery

Where should ajax request be made in Flux app?

I’m creating a react.js application with flux architecture and I am trying figure out where and when a request for data from the ...

June 1, 2022
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javascript, Programming

IT Nursery

React functional stateless component, PureComponent, Component; what are the differences and when should we use what?

Came to know that from React v15.3.0, we have a new base class called PureComponent to extend with PureRenderMixin built-in. What I understand ...

June 1, 2022
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Programming, reactjs

IT Nursery

React.useState does not reload state from props

I’m expecting state to reload on props change, but this does not work and user variable is not updated on next useState call, ...

May 31, 2022
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javascript, Programming

IT Nursery

React won’t load local images

I am building a small react app and my local images won’t load. Images like placehold.it/200x200 loads. I thought maybe it could be ...

May 31, 2022
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javascript, Programming

IT Nursery

React-Native: Application has not been registered error

I am currently going through the React-Native tutorials. I began with the Getting Started tutorial, where I made a new react native project ...

May 31, 2022
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javascript, Programming

IT Nursery

Is there any downside to using .tsx instead of .ts all the times in typescript?

I just start working on a React project with TypeScript and ask myself what should I do with regular class files? Should I ...

May 31, 2022
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Programming, reactjs

IT Nursery

Why are Fragments in React 16 better than container divs?

In React 16.2, improved support for Fragments has been added. More information can be found on React’s blog post here. We are all ...

May 30, 2022
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javascript, Programming

IT Nursery

React: “this” is undefined inside a component function

class PlayerControls extends React.Component { constructor(props) { super(props) this.state = { loopActive: false, shuffleActive: false, } } render() { var shuffleClassName = this.state.toggleActive ...

May 30, 2022
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Programming, reactjs

IT Nursery

What are React controlled components and uncontrolled components?

What are controlled components and uncontrolled components in ReactJS? How do they differ from each other? 5 Answers 5

May 30, 2022
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