Javascript DOM Element class set
<!DOCTYPE html> <html lang="en"> <head> <title>Chapter 9, Example 5</title> <style> #divAdvert { //from w ww. j a v a 2s . c o m font: 12pt arial; } .new-style { font-style: italic; text-decoration: underline; } </style> </head> <body> <div id="divAdvert"> Here is an advertisement. </div> <script> let divAdvert = document.getElementById("divAdvert"); divAdvert.className = "new-style"; </script> </body> </html>