<!DOCTYPE html> <html> <body> <h1>HTML Style 对象</h1> <h2>backgroundColor 属性</h2> <div id="myDiv" style="background-color:orange;">这是 myDiv。</div> <p>myDiv 的背景属性是:</p> <p id="demo"></p> <script> let back = document.getElementById("myDiv").style.backgroundColor; document.getElementById("demo").innerHTML = back </script> </body> </html>