在新选项卡中打开特定div中的链接

<div id="myDiv">
  <a href="https://www.example.com">链接到示例网站</a>
</div>
<button onclick="openLinkInNewTab()">在新选项卡中打开链接</button>

function openLinkInNewTab() {
  var div = document.getElementById("myDiv");
  var link = div.getElementsByTagName("a")[0];
  var url = link.getAttribute("href");
  window.open(url, "_blank");
}