​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1 id="myH1" style="color:red">我的标题</h1>
​
<p>单击按钮可获取 H1 元素的 style 属性。</p>
​
<button onclick="myFunction()">试一试</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var x = document.getElementById("myH1").style.color;
  document.getElementById("demo").innerHTML = x;
}
</script>
​
</body>
</html>
​