State & Props
Engineering
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Initializing State
We no longer use the constructor and instead define State property directly, like so,
class UserGreeting extends Component {
state = { name: 'John' }
render() {
return <h1 className='name'>{this.state.name}</h1>
}
}
export default UserGreeting
For Data Fetching use cases, State can be initialized inside thecomponentDidMount lifecycle.
hydrateState = () =>
fetch('https://api.example.com/products')
.then(response => response.json())
.then(data => this.setState({data})
.catch(error => console.error(error))
componentDidMount () {
this.hydrateState()
}
Props
Only provide components with the necessary Props.
class UserGreeting extends Component {
state = {
user: {
name: 'John',
email: 'john@site.com',
age: 28
}
}
render() {
// Destructure nested object props for better readability
const user = this.state.user
return (
<div>
<NameTag name={user.name} /> // Instead of <NameTag user={user} />
<EmailLink email={user.email} />
<h4>{user.age}</h4>
</div>
)
}
}
export default UserGreeting
Reference
• The constructor is dead, long live the constructor! (hackernoon.com): https://hackernoon.com/the-constructor-is-dead-long-live-the-constructor-c10871bea599
Insights, Forward Thinking.
Dive into our latest musings and discoveries. Our blog is a window to the trends shaping the future and reflections on our journey.
Exploring horizons, sharing insights.
Designing for Scalability: Engineering Challenges and Strategies
From building minimum-viable-products to managing existing products, we created product teams and managed them within Mashup Garage. We work with companies of different stages and together we built products and launched them.
Agile Evolution: Adapting Strategy for Fast-Paced Tech Development
From building minimum-viable-products to managing existing products, we created product teams and managed them within Mashup Garage. We work with companies of different stages and together we built products and launched them.
Innovation at the Intersection: How Diverse Cultures are Shaping Tech
From building minimum-viable-products to managing existing products, we created product teams and managed them within Mashup Garage. We work with companies of different stages and together we built products and launched them.
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