编辑代码

function isFieldInPairedQuotes(arr, index) {
  const str = arr[index];
  const regex = /(["'])(?:(?=(\\?))\2.)*?\1/;
  return regex.test(str);
}
let arr = ["\"", 'dds', "\"", "+", '444', "+", "\"", 'dsd', "\""]
console.log(arr.join(''))
const result1 = isFieldInPairedQuotes(arr, 4)
console.log(result1)