​x
 
<!DOCTYPE html>
<html>
<body>
​
<h3>如何访问 VAR 元素的演示</h3>
​
<p>单击按钮将 <var id="myVar">此文本</var> 的颜色设置为红色。</p>
​
<button onclick="myFunction()">试一试</button>
​
<script>
function myFunction() {
  var x = document.getElementById("myVar");
  x.style.color = "red";
}
</script>
​
</body>
</html>
​
​