Javascript 是否有任何方法可以仅在折线图(Recharts)中更改单击的线条的颜色?
关于折线图,我的代码有问题。所以,我只想点击一条线来改变它的颜色,但是发生的是图表中的所有线都改变了它们的笔划颜色。这是我的密码:Javascript 是否有任何方法可以仅在折线图(Recharts)中更改单击的线条的颜色?,javascript,reactjs,recharts,Javascript,Reactjs,Recharts,关于折线图,我的代码有问题。所以,我只想点击一条线来改变它的颜色,但是发生的是图表中的所有线都改变了它们的笔划颜色。这是我的密码: export default class LineChartPresentational extends React.Component { constructor(props) { super(); this.state = { isclicked: true, }} changeStrokeclick() {
export default class LineChartPresentational extends React.Component {
constructor(props) {
super();
this.state = {
isclicked: true, }}
changeStrokeclick() {
this.setState({isclicked: !this.state.isclicked} )}
render() {
let strokecolor = this.state.isclicked ? "#9da0a5" : "#2d75ed"
return (
<div>
<div id="lclastdataref" style={{ textAlign: 'right' }}>
<span>Last Data Refresh: {linechartdf.date} </span>
</div>
<div className='line-charts'>
<div className="line-chart-wrapper " style={{ width: window.innerWidth / 2, height: window.innerHeight / 2, }}>
<ResponsiveContainer>
<LineChart
width={width} height={height} margin={{ top: 20, right: 20, bottom: 20, left: 20 }} data={linechartdata} id="Line-Chart">
<XAxis dataKey={xAxisColumn} />
<YAxis domain={['auto', 'auto']} />
<Tooltip cursor={false} />
{
linechartdata.map((entry, index) => (
<Line stroke={strokecolor} onClick={this.changeStrokeclick.bind(this)} name={linechartdata[index].dataKey} strokeWidth={lineThickness} dataKey={`value${index + 1}`} dot={false} className={`value${index + 1}`}/>
))
}
</LineChart>
</ResponsiveContainer>
</div>
</div>
</div>
); }
导出默认类LineChartPresentational.Component{
建造师(道具){
超级();
此.state={
isclicked:true,}
changeStrokeclick(){
this.setState({isclicked:!this.state.isclicked})
render(){
让strokecolor=this.state.isclicked?#9da0a5:“#2d75ed”
报税表(
上次数据刷新:{linechartdf.date}
{
linechartdata.map((条目,索引)=>(
))
}
); }
我真的需要您的帮助,因为您可以看到我的行是使用循环创建的。谢谢!首先,您需要将
isclicked
更改为clickedLineID
,并使其接受字符串
constructor(props) {
super();
this.state = {
clickedLineID: '', }}
您需要使用onClick传递行ID
<Tooltip cursor={false} />
{
linechartdata.map((entry, index) => (
<Line stroke={strokecolor} onClick={this.changeStrokeclick.bind(this, index)} name={linechartdata[index].dataKey} strokeWidth={lineThickness} dataKey={`value${index + 1}`} dot={false} className={`value${index + 1}`}/>
))
}
</LineChart>
因此,当前单击的行处于clickedLineID
状态
我们不再需要这段代码了,我也不想把它放在render()中
将工具提示中的笔划线更改为
stroke={index === this.state.clickedLineID ? "#9da0a5" : "#2d75ed"}
最后的代码是这样的
<Tooltip cursor={false} />
{
linechartdata.map((entry, index) => (
<Line stroke={index === this.state.clickedLineID ? "#9da0a5" : "#2d75ed"}
onClick={this.changeStrokeclick.bind(this, index)} name={linechartdata[index].dataKey} strokeWidth={lineThickness} dataKey={`value${index + 1}`} dot={false} className={`value${index + 1}`}/>
))
}
</LineChart>
它成功了!非常感谢!:)尽管当我再次单击它时,它不会恢复到原始颜色。:(@Liam-看起来你的示例已从codesandbox中删除
stroke={index === this.state.clickedLineID ? "#9da0a5" : "#2d75ed"}
<Tooltip cursor={false} />
{
linechartdata.map((entry, index) => (
<Line stroke={index === this.state.clickedLineID ? "#9da0a5" : "#2d75ed"}
onClick={this.changeStrokeclick.bind(this, index)} name={linechartdata[index].dataKey} strokeWidth={lineThickness} dataKey={`value${index + 1}`} dot={false} className={`value${index + 1}`}/>
))
}
</LineChart>
changeColor = (data) =>{
console.log(data, 'check what we received from the button')
if(this.state.clickedItem === data){
this.setState({clickedItem: null})
}else{
this.setState({ clickedItem: data })
}
};