代码示例:(标识:event_composedpath)
<!DOCTYPE html>
<html>
<body>
<style>
div {
  padding:50px;
  background-color:rgba(255, 0, 0, 0.2);
  text-align:center;
  cursor:pointer;
}
</style>
<script>
function func1(event) {
  alert(event.composedPath());
}
</script>

<h1>composedPath() 方法</h1>

<p>请点击 DIV 1:</p>

<div>DIV 2

  <div onclick="func1(event)">DIV 1</div>

</div>

<p>composedPath() 方法返回当前事件将通过的所有元素。</p>

</body>
</html>
运行结果: