问使用子字符串在React组件中裁切文本，而无需停止文字

EN

const lead = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.'

const trimmedLead = lead.substring(0, 118)
                        .substring(0, lead.substring(0, 118).lastIndexOf(' ')) +
                        '...'
console.log({ trimmedLead, length: trimmedLead.length});

function trimDownToWord(string, maxLength) {
  if (string <= maxLength) {
    return string;
  }

  let first = string.substr(0, maxLength);
  const second = string.substr(maxLength);

  if (/\w$/.test(first) && /^\w/.test(second)) {
    first = first.replace(/\b[^\w]*\w+$/, '');
  }

  return first.trim() + '...';
}



const lead = `This is multiple words, many fun words to read!`

// Without word trimming:
const trimmedAtLength = lead.substring(0, 25) + '...';
console.log(trimmedAtLength);

// With word trimming:
const trimmedByWords = trimDownToWord(lead, 26);
console.log(trimmedByWords);