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<!DOCTYPE html> <html> <body> <ul> <li>Coffee</li> <li>Tea</li> </ul> <p>Click the button to change the text of the first list item (index 0).</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { var list = document.getElementsByTagName("UL")[0]; list.getElementsByTagName("LI")[0].innerHTML = "Milk"; } </script> </body> </html>