我有两支笔,我正在尝试使用我在一支笔中定义的React组件,但我不清楚Codepen如何处理笔之间的React导入。我转到目标笔并将源笔的地址添加到Javascript引用中,但我不知道如何从那里继续。我可以使用传统的导出在本地节点项目中实现这一点,但Codepen元素给我带来了麻烦。代码如下:
来源:(
https://codepen.io/ejpg/pen/LmOVoR
):
export default class Wheel extends React.Component // Export default causes error
{
constructor(props){
super(props);
this.state = {
spin : false,
value: 0
};
this.spin = this.spin.bind(this);
}
spin(e){
var val = this.state.value + 720 + (Math.floor(Math.random() * 24) * 15);
console.log((this.state.value % 360) / 15);
e.target.style.webkitTransform = 'rotate(' + -val + 'deg)';
e.target.style.webkitTransition = '-webkit-transform 4s ease-out';
this.setState({value: val});
}
render(){
const wheelVals = [800, "BANKRUPT", 200, 300, 350, 250, 400, 300, 200, 250, 500, 350, 250,
"BANKRUPT", 200, 300, 400, 250, 600, "LOSE A TURN", 200, 300, 250, 200];
return (<div><img width="400" height="400" src="https://orig00.deviantart.net/0a38/f/2010/242/f/6/singapore_wheel_of_fortune_by_wheelgenius-d2xmb9v.jpg" onClick={(e) => this.spin(e)}/><br/><br/>{wheelVals[(this.state.value % 360) / 15]}
</div>);
}
}
目的地(
https://codepen.io/ejpg/pen/bMgWpN
):
let { Grid, Row, Col, ButtonToolbar, Button } = ReactBootstrap;
// How do I import the class?
class CustomButton extends React.Component {
onHandleClick = () => {
this.props.onClick();
};
render(){
return <Button bsStyle={this.props.bsStyle} onClick={this.onHandleClick}><strong>{this.props.text}</strong></Button>;
}
}
class Letter extends React.Component {
onHandleClick = () => {
this.props.onClick(this.props.letter);
};
render () {
const style = { border: '1px solid black',
display: 'inline-block',
fontSize: '3.5vw',
width: '4vw',
height: '10vh',
textAlign: 'center',
whiteSpace: 'no-wrap',
overflow: 'hidden'};
if (this.props.letter === ' ') style.border = '';
return (
<div
style={style}
key={this.props.key}
onClick={this.onHandleClick} // Have to pass onClick to div
>
{this.props.letter}
</div>
);
}
}
class MyComponent extends React.Component {
constructor(props) {
super(props);
var blanks = '';
for (var i = 0; i < this.props.answer.length; ++i)
{
this.props.answer[i] === ' ' ?
blanks += ' ': blanks += '-';
}
this.state = {
phrase: blanks,
alpha: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
bonus: false,
revealed: false
};
this.callLetter = this.callLetter.bind(this);
this.bonusRound = this.bonusRound.bind(this);
this.complete = this.complete.bind(this);
}
replaceAt(str, index, replacement) {
return str.substr(0, index) + replacement + str.substr(index + replacement.length);
}
complete(){
if (this.state.revealed === false)
{
this.setState({phrase: this.props.answer, revealed: true});
}
}
checkForLetter(letter, phr)
{
this.setState((prevState, props) => {
var prephrase = prevState.phrase;
var index = phr.indexOf(letter);
while( index !== -1)
{
prephrase = this.replaceAt(prephrase, index, letter);
index = phr.indexOf(letter, index + 1);
}
return ({phrase: prephrase});
});
}
callLetter(letter) {
this.setState((prevState, props) => {
var alphaclone = prevState.alpha;
var letterindex = alphaclone.indexOf(letter);
alphaclone = alphaclone.slice(0, letterindex) + alphaclone.slice(letterindex + 1);
return ({alpha: alphaclone});
});
this.checkForLetter(letter, this.props.answer);
}
bonusRound(){
if (this.state.bonus === false)
{
this.callLetter('R');
this.callLetter('S');
this.callLetter('T');
this.callLetter('L');
this.callLetter('N');
this.callLetter('E');
this.setState({bonus: true});
}
}
render() {
return (
<Grid>
<Row className="show-grid" >
{
this.state.phrase.split(' ').map((item, j) =>
(
<div style = {{display:'inline-block'}}>
<Letter letter = {' '}/>
{item.split('').map((item, i) =>
(
<Letter letter= {item}/>
)) }
</div>
))
}
</Row>
<Row className="show-grid" style={{margin: '3vh'}}>
{
this.state.alpha.split('').map((item, i) =>
(
<Letter letter={item} key={i} onClick={this.callLetter}/>
))
}
</Row>
<Row className="show-grid" style={{margin: '3vh'}}>
<ButtonToolbar>
<CustomButton bsStyle = {"primary"} text= {"BONUS ROUND"} onClick = {this.bonusRound}/>
<CustomButton bsStyle = {"danger"} text= {"REVEAL ALL"} onClick = {this.complete}/>
</ButtonToolbar>
</Row>
</Grid>
);
}
}
ReactDOM.render(
<MyComponent answer='A VERY VERY EXCESSIVELY LONG TEST'/>,
document.getElementsByClassName('container-fluid')[0]
);
非常感谢您的帮助。
编辑:我不敢相信我真的必须明确声明我不想复制和粘贴它。