//语法
document.getElementById(id).style.property=new style
<p id="p2">Hello World!</p> <script> document.getElementById("p2").style.color="blue"; </script>
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>W3Cschool教程(w3cschool.cn)</title> 6 </head> 7 <body> 8 9 <h1 id="id1">我的标题 1</h1> 10 <button type="button" onclick="document.getElementById(‘id1‘).style.color=‘red‘">点我!</button> 12 13 </body> 14 </html>
原文：http://www.cnblogs.com/guorange/p/7132501.html