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<!DOCTYPE html> <html> <head> <style> img { width: 200px; height: 400px; } </style> </head> <body> <h1>使用 JavaScript 更改 objectFit</h1> <p>点击“试一试”按钮以剪切图像的边，同时保持纵横比：</p> <img src="paris.jpg" alt="巴黎" id="myImg" width="400" height="300"> <br> <button onclick="myFunction()">试一试</button> <p>注意：Internet Explorer/Edge 15 或更早版本不支持 object-fit 属性。</p> <script> function myFunction() { document.getElementById("myImg").style.objectFit = "cover"; } </script> </body> </html>