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CSS box-shadow 属性
trycss3_js_box-shadow
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<!DOCTYPE html> <html> <head> <style> #myDIV { position: absolute; width: 100px; height: 100px; background-color: coral; color: white; } </style> </head> <body> <h1>Change box-shadow with JavaScript</h1> <p>Click the "Try it" button to set the box-shadow property of the DIV element:</p> <button onclick="myFunction()">Try it</button> <div id="myDIV"> <h1>myDIV</h1> </div> <script> function myFunction() { document.getElementById("myDIV").style.boxShadow = "10px 20px 30px blue"; } </script> </body> </html>