使用正则表达式获取标记内的引号

/(?<=<mark>).*?(?=<\/mark>)/g

const text = 'This is a <mark>"sample"</mark> text with <mark>"multiple"</mark> quotes.';
const regex = /(?<=<mark>).*?(?=<\/mark>)/g;
const matches = text.match(regex);

if (matches) {
  matches.forEach(match => {
    const quotes = match.match(/"(.*?)"/g);
    if (quotes) {
      quotes.forEach(quote => {
        console.log(quote);
      });
    }
  });
}

"sample"
"multiple"