如何正则标签id和内容？

var regc = /<span id="([a-z]+)">([^<]+)<\/span>/g;


var str = `
<span id="aa">123</span>
<span class="bc">0000.</span>
<span id="bc">456.</span>
<span id="de">789..</span>
<span id="fg">aaaa..</span>
`;

var match;
while ((match = regc.exec(str)) !== null) {
  console.log([match[1], match[2]]);
}

// 或者
for (const match of str.matchAll(regc)) {
  console.log([match[1], match[2]]);
}