如何在React中使用子字符串(或截断字符串)

import React from 'react';

class SubstringComponent extends React.Component {
  render() {
    // 在这里进行子字符串或截断字符串的操作
    return (
      <div>
        {/* 显示子字符串或截断后的字符串 */}
      </div>
    );
  }
}

class SubstringComponent extends React.Component {
  render() {
    const fullString = "这是一个很长的字符串";
    const maxLength = 10;
    let truncatedString = fullString;

    if (fullString.length > maxLength) {
      truncatedString = fullString.substring(0, maxLength) + "...";
    }

    return (
      <div>
        {truncatedString}
      </div>
    );
  }
}