<html><body><div id="test"> <p>单击按钮获取测试 div 的 offsetParent。</p> <p><button onclick="myFunction()">试一试</button></p> <p>offsetParent is: <span id="demo"></span></p></div><script>function myFunction() { var testDiv = document.getElementById("test"); document.getElementById("demo").innerHTML = testDiv.offsetParent;}</script></body></html>