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源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>安科教程(www.ancii.com)</title> </head> <body> <img id="image" src="/attachments/cover/cover_docker.png" width="160" height="120"> <script> document.getElementById("image").src="/attachments/cover/cover_javascript.png"; </script> <p>原图片为 cover_docker.png,脚本将图片修改为 cover_javascript.png</p> </body> </html>
运行结果
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