html运行实例（jsck_element_style

代码示例：（标识：jsck_element_style_2）

<!DOCTYPE html>
<html>
<body>

<h1 id="myH1">Element 对象</h1>

<h2>style 属性</h2>

<p id="myP" style="border-top: 5px solid red;">我的顶部边框的值是：</p>

<p id="demo"></p>

<script>
let value = document.getElementById("myP").style.borderTop;
document.getElementById("demo").innerHTML = value; 
</script>

</body>
</html>