Source Code:
(back to article)
Submit
Result:
Report an issue
<!DOCTYPE html> <html> <body> <div id="divId" class="someClass "> <p>Add new classes</p> </div> <script> function addClass() { let cName = document.getElementById("divId"); cName.classList.add("addNewClass"); alert(cName.classList); } addClass(); </script> </body> </html>