代码示例:(标识:eg_js_jquery_style_css)
<!DOCTYPE html>
<html>
<body>

<p id="demo">JavaScript 能够修改 HTML 元素的样式。</p>

<script>
var myElement = document.getElementById("demo");
myElement.style.fontSize = "35px";
</script>

</body>
</html>
运行结果: