Change the type and position of a list to "square inside":
document.getElementById("myList").style.listStyle = "square inside";
<!DOCTYPE html> <html> <body> <ul id="myList"> <li>CSS</li> <li>HTML</li> <li>SQL</li> <li>C++</li> </ul>//w w w. j av a2 s . co m <button type="button" onclick="myFunction()">Change list style</button> <script> function myFunction() { document.getElementById("myList").style.listStyle = "square inside"; } </script> </body> </html>