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<!DOCTYPE html> <html> <body> <h1>使用 JavaScript 更改过滤器</h1> <p>单击按钮可将图像颜色更改为 100% 灰度。</p> <button onclick="myFunction()">试一试</button><br><br> <img id="myImg" src="pineapple.jpg" alt="菠萝" width="300" height="300"> <p><strong>注意：</strong>此示例不适用于 Edge 12 和 Internet Explorer。</p> <script> function myFunction() { document.getElementById("myImg").style.filter = "grayscale(100%)"; } </script> </body> </html>