import React from 'react';import JsBarcode from 'jsbarcode';export class RefundSheet extends React.Component { constructor(props) { super(props); this.state = { value: props.barCode, //由父組件傳入用來生成條形碼的字符串「barCode」 }; } componentDidMount() { // 調用 JsBarcode方法生成條形碼 JsBarcode(this.barcode, this.state.value, { displayValue: false, width: 1.5, height: 50, margin: 0, }); } render() { return ( <div className="barcode-box"> <svg ref={(ref) => { this.barcode = ref; }} /> </div> ); }}export default RefundSheet;//導出組件