代码示例:(标识:jsck_style_backgroundcolor_3)
<!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>
运行结果: