Reputation: 313
I am trying to have a center div background color transition each time the "New Quote" button is clicked and a new quote generated. I am having trouble 1. with setting the transition to this div. I would like to have a set of 5 colors that the div will transition to in order. Can this be an array of css colors? Not sure how to go about this. I am also not sure how to link this transition to the button click event.
Button Component:
class Button extends React.Component {
constructor(props) {
super(props);
this.state = {
showComponent: true,
cardColor: true,
backgroundColor: true
};
this.onButtonClick = this.onButtonClick.bind(this);
}
onButtonClick() {
this.setState({
showComponent: true,
cardColor: true,
backgroundColor: true
});
}
render(){
return(
<div>
<button onClick={this.onButtonClick} type='button' class='btn btn-primary'
style={{
position: 'absolute',
right: '10px',
bottom: '10px',
padding: '2%'
}}>New Quote</button>
{this.state.showComponent ? <AuthorQuotePrint props={QUOTES}/> : null}
</div>
)
}
}
Quote Box Div:
class RandomQuoteBox extends React.Component{
render(){
const myStyle={
backgroundColor: 'red',
width: '500px',
height: '300px',
margin: '0 auto'
};
return(
<div class="container">
<div class="row">
<div class="col">
</div>
<div class="col-8">
<div class="card" style={myStyle}>
<div>
<Button />
</div>
</div>
</div>
<div class="col">
</div>
</div>
</div>
);
}
}
Upvotes: 0
Views: 259
Reputation: 15530
I assume hereafter <RandomQuoteBox />
and <Button />
components have common parent.
With that you may attach onClick
event within <Button />
component to callback within common parent (e.g. <QuoteForm />
), which modifies parent state variable corresponding to currently applied color index within <RandomQuoteBox />
Consider the live-demo below, which I tried to adapt to your use case and tried to keep distilled at the same time:
const { render } = ReactDOM,
rootNode = document.getElementById('root')
class AuthorQuotePrint extends React.Component {
render(){
return <div>{this.props.quote}</div>
}
}
class Button extends React.Component {
render(){
return(
<div>
<button onClick={this.props.onNextQuote}>Next Quote</button>
<AuthorQuotePrint quote={this.props.quote} />
</div>
)
}
}
class RandomQuoteBox extends React.Component {
constructor(props){
super(props)
this.state = {
quotes: ['Some quote', 'Some other quote', 'Just one more quote', 'Yet another quote', 'This one is quote too'],
colors: ['red', 'green', 'blue', 'purple', 'black']
}
this.state = {
...this.state,
currentQuoteIdx: Math.random()*this.state.quotes.length|0,
currentColorIdx: 0
}
this.onNextQuote = this.onNextQuote.bind(this)
}
onNextQuote(){
const nextQuoteIdxShift = 0|Math.random()*this.state.quotes.length || 1,
nextQuoteIdx = (this.state.currentQuoteIdx+nextQuoteIdxShift)%this.state.quotes.length
this.setState({
currentQuoteIdx: nextQuoteIdx,
currentColorIdx: (this.state.currentColorIdx+1)%this.state.colors.length
})
}
render(){
return(
<div
style={{
backgroundColor:this.state.colors[this.state.currentColorIdx],
color: '#fff',
width: 200
}}
>
<Button
onNextQuote={this.onNextQuote}
quote={this.state.quotes[this.state.currentQuoteIdx]}
/>
</div>
)
}
}
render(<RandomQuoteBox />, rootNode)
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.12.0/umd/react.production.min.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.11.0/umd/react-dom.production.min.js"></script><div id="root"></div>
Upvotes: 1