W3School TIY
编辑您的代码：
<html> <head> <script type="text/javascript"> function changeSrc() { document.getElementById("myImage").src="../i/eg_smile.gif" } </script> </head> <body> <img id="myImage" src="../i/eg_bulbon.gif" /> <br /><br /> <input type="button" onclick="changeSrc()" value="改变图像"> </body> </html>
查看结果: