fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> <style type="text/css"> #ex1{ border: 1px solid #FF0000; } </style> <script> function displayResult(){ document.getElementById("ex1").style.borderLeftStyle="dotted"; } </script> </head> <body> <div id="ex1">这是一些文本。</div> <br> <button type="button" onclick="displayResult()">修改左边框的style</button> </body> </html>
运行结果