MediaQueryList
Обновлено: 23.03.2023
Об’єкт MediaQueryList
Об’єкт MediaQueryList зберігає інформацію з медіа-запиту.
Об'єкт MediaQueryList є властивістю об'єкта window .
Доступ до об’єкта MediaQueryList здійснюється за допомогою:
window.matchMedia()або просто matchMedia().
Властивості MediaQueryList
| Property | Description |
|---|---|
| matches | A boolean.true if the document matches the query, otherwise false. |
| media | A string. A media query (list). |
Методи MediaQueryList
| Method | Description |
|---|---|
| addListener() | Adds a new listener function, which is executed whenever the media query's evaluated result changes |
| removeListener() | Removes a previously added listener function from the media query list. Does nothing if the specified listener is not already in the list |
Медіа запити
Медіа-запити методу matchMedia()можуть бути будь-якими медіа-функціями правила CSS @media , наприклад min-height, min-width, orientation тощо.
Типи носіїв
| Value | Description |
|---|---|
| all | Default. Used for all media type devices |
| Used for printers | |
| screen | Used for computer screens, tablets, smart-phones etc. |
| speech | Used for screenreaders that "reads" the page out loud |
Функції медіа
| Value | Description |
|---|---|
| any-hover | Does any available input mechanism allow the user to hover over elements? (added in Media Queries Level 4) |
| any-pointer | Is any available input mechanism a pointing device, and if so, how accurate is it? (added in Media Queries Level 4) |
| aspect-ratio | The ratio between the width and the height of the viewport |
| color | The number of bits per color component for the output device |
| color-gamut | The approximate range of colors that are supported by the user agent and output device (added in Media Queries Level 4) |
| color-index | The number of colors the device can display |
| grid | Whether the device is a grid or bitmap |
| height | The viewport height |
| hover | Does the primary input mechanism allow the user to hover over elements? (added in Media Queries Level 4) |
| inverted-colors | Is the browser or underlying OS inverting colors? (added in Media Queries Level 4) |
| light-level | Current ambient light level (added in Media Queries Level 4) |
| max-aspect-ratio | The maximum ratio between the width and the height of the display area |
| max-color | The maximum number of bits per color component for the output device |
| max-color-index | The maximum number of colors the device can display |
| max-height | The maximum height of the display area, such as a browser window |
| max-monochrome | The maximum number of bits per "color" on a monochrome (greyscale) device |
| max-resolution | The maximum resolution of the device, using dpi or dpcm |
| max-width | The maximum width of the display area, such as a browser window |
| min-aspect-ratio | The minimum ratio between the width and the height of the display area |
| min-color | The minimum number of bits per color component for the output device |
| min-color-index | The minimum number of colors the device can display |
| min-height | The minimum height of the display area, such as a browser window |
| min-monochrome | The minimum number of bits per "color" on a monochrome (greyscale) device |
| min-resolution | The minimum resolution of the device, using dpi or dpcm |
| min-width | The minimum width of the display area, such as a browser window |
| monochrome | The number of bits per "color" on a monochrome (greyscale) device |
| orientation | The orientation of the viewport (landscape or portrait mode) |
| overflow-block | How does the output device handle content that overflows the viewport along the block axis (added in Media Queries Level 4) |
| overflow-inline | Can content that overflows the viewport along the inline axis be scrolled (added in Media Queries Level 4) |
| pointer | Is the primary input mechanism a pointing device, and if so, how accurate is it? (added in Media Queries Level 4) |
| resolution | The resolution of the output device, using dpi or dpcm |
| scan | The scanning process of the output device |
| scripting | Is scripting (e.g. JavaScript) available? (added in Media Queries Level 4) |
| update | How quickly can the output device modify the appearance of the content (added in Media Queries Level 4) |
| width | The viewport width |