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<!DOCTYPE html> <html> <head> <style> #main { border: 15px solid transparent; padding: 15px; border-image: url(border.png); border-image-slice: 30; border-image-width: 10px; border-image-repeat: round; } </style> </head> <body> <h1>Change border-image-width with JavaScript</h1> <p id="main">This element uses an image as a border.</p> <p>Click the "Try it" button to change the value of the borderImageWidth property.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { document.getElementById("main").style.borderImageWidth = "20px 30px"; } </script> </body> </html>
