MediaList

The MediaList interface represents the media queries of a stylesheet, e.g., those set using a <link> element’s media attribute.

[!NOTE] MediaList is a live list; updating the list using properties or methods listed below will immediately update the behavior of the document.

Instance properties

• mediaText
  • : A stringifier that returns a string representing the MediaList as text, and also allows you to set a new MediaList.
• length Read only
  • : Returns the number of media queries in the MediaList.

Instance methods

• appendMedium()
  • : Adds a media query to the MediaList.
• deleteMedium()
  • : Removes a media query from the MediaList.
• item()
  • : A getter that returns a string representing a media query as text, given the media query’s index value inside the MediaList. This method can also be called using the bracket ([]) syntax.
• toString()
  • : Returns a string representation of this media list in the same format as the object’s mediaText property.

Examples

The following would log to the console a textual representation of the MediaList of the first stylesheet applied to the current document.

const stylesheets = document.styleSheets;
let stylesheet = stylesheets[0];
console.log(stylesheet.media.mediaText);

Specifications

Browser compatibility