如何解决如何使用功能组件在浏览器中打印 react-chartjs-2 条形图?
这是条形图的示例。我想在浏览器中打印此条形图,为此我尝试了 react-to-print,但它抛出错误,如 react-to-print 仅适用于类组件。
import React from "react";
import { Bar } from "react-chartjs-2";
// dataset for bar chart
const data = {
// goes onto X-axis
labels: ["January","February","march","April","May","June","July"],datasets: [
{
label: "My First dataset",fill: false,// background color
backgroundColor: "rgba(75,192,0.4)",// border color
borderColor: "rgba(75,1)",// goes onto y-axis
data: [65,59,80,81,56,55,40]
}
]
};
const options={
//options for bar chart
};
export const BarDemo = () => {
return (
<div>
<h2>Bar Example</h2>
<Bar data={data} />
</div>
);
};
解决方法
在我的一个项目中,我尝试了很多方法来克服这个问题。 终于想出了解决方案,也许对某人有帮助。
首先,我使用功能组件创建了条形图,如您在上面给出的示例中所见。
所以,这是所问问题的最终代码。
随时感谢我:)
import React,{useRef} from "react";
// import class component
import BarComponent from './BarComponent';
const data = {
labels: ["January","February","March","April","May","June","July"],datasets: [
{
label: "My First dataset",fill: false,backgroundColor: "rgba(75,192,0.4)",borderColor: "rgba(75,1)",data: [65,59,80,81,56,55,40]
}
]
};
const options={
//options for bar chart
};
export const BarDemo = () => {
const componentRef = useRef();
return (
<div>
<h2>Bar Example</h2>
//instead of using Bar directly,we will create a class component.
<BarComponent ref={componentRef} data={data} options={options}/>
</div>
);
};
// here goes the class Component somethings like this.
import React from 'react';
import {Bar} from 'react-chartjs-2';
class BarComponent extends React.PureComponent {
componentRef = React.createRef();
render() {
return (
<div>
<Bar ref={this.componentRef} id="Bar" data={this.props.data} options={this.props.options}/>
</div>
);
}
};
export default BarComponent;
// we can pass the ref of BarComponent as props to the print functional component something like this
import React from 'react';
import { useReactToPrint } from "react-to-print";
export const Print = ({componentRef}) =>{
// it will print the bar chart
const handlePrint = useReactToPrint({
content: () => componentRef.current
});
return(
<button onClick={handlePrint}> Print </button>
);
};
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