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CSS Media queries are a way to target browser by certain characteristics, features, and user preferences, then apply styles or run other code based on those ...

A MediaQueryList object stores information on a media query applied to a document, with support for both immediate and event-driven matching ... Media property · Change event · MediaQueryList: addListener

The DOM provides features that can test the results of a media query programmatically, via the MediaQueryList interface and its methods and properties. Creating a media query list · Receiving query notifications · Browser compatibility

當今天我們可能有多組Media query，當希望對於其中幾組的Media query 套用相同樣式時，可以使用 , 將多個Media queries 組成一組，這稱之為 media query list 。 舉例來說：.

Media Queries Basic​. 透過 @media 可以用來定義要套用的. 媒體類型（Media Type）：可用的類型包含 all (default) , print , screen 和 speech 。

Queries 有四種使用方式，分別是or、and、not 和only，除了or 使用逗號「,」表現，其他的就直接寫出英文字，下列應用實例分別使用這四種方式來表現。

A media query consists of a media type and zero or more expressions that check for the conditions of particular media features.

The MediaQueryList object stores information from a media query. The MediaQueryList object is a property of the window object.

Media Query Syntax​​ A media query consists of a media type and can contain one or more media features, which resolve to either true or false.