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<!DOCTYPE html> <html> <head> <style> #myDIV { border: 1px solid black; background-color: lightblue; width: 270px; height: 200px; overflow: auto; transition: all 5s; } #myDIV:hover { background-color: coral; width: 570px; height: 500px; padding: 100px; border-radius: 50px; } </style> </head> <body> <h1>Change transition-duration with JavaScript</h1> <p>Mouse over the DIV element and it will change, both in color and size!</p> <p>Click the "Try it" button and mouse over the DIV element again. The changes will now happen much faster!</p> <button onclick="myFunction()">Try it</button> <div id="myDIV"> <h1>myDIV</h1> </div> <script> function myFunction() { document.getElementById("myDIV").style.transitionDuration = "1s"; } </script> </body> </html>
