We're looking for a person or people to help audit MDN to find places we could speed up. Is this you or someone you know? Check out the RFP: https://mzl.la/2IHcMiE

element.className Redirect 1


className gets and sets the value of the class attribute of the specified element.


cName = elementNodeReference.className;
elementNodeReference.className = cName;
  • cName is a string variable representing the class or space-separated classes of the current element.


var elm = document.getElementById("div1");

if (elm.className == "fixed") {
  // skip a particular class of element


The name className is used for this property instead of class because of conflicts with the "class" keyword in many languages which are used to manipulate the DOM.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)


See also

Document Tags and Contributors

 Last updated by: Sheppy,