<!DOCTYPE html>
<html>
<body>
<p>单击该按钮可打开多个选项卡。</p>
<button onclick="myFunction()">打开窗口</button>
<script>
function myFunction() {
window.open("http://www.google.com/");
window.open("https://www.begtut.com/");
}
</script>
</body>
</html>