# MediaQueryObserver.observe(Object descriptor, function callback)
with Promise style call: Not supported
Mini Program plugin: Support
Start listening to page media query Changes
# parameter
# Object descriptor
media query Descriptor
| attribute | type | Default values | Required | Introductions |
|---|---|---|---|---|
| minWidth | number | yes | Minimum page width px In units) | |
| maxWidth | number | yes | Maximum Page Width ( px In units) | |
| width | number | yes | Page width px In units) | |
| minHeight | number | yes | Minimum page height px In units) | |
| maxHeight | number | yes | Maximum Page Height ( px In units) | |
| height | number | yes | Page height ( px In units) | |
| orientation | string | yes | Screen direction ( landscape or portrait ） |
# function callback
to monitor media query State change callback function
# parameter
# Object res
| attribute | type | Introductions |
|---|---|---|
| matches | boolean | Does the current state of the page satisfy the specified media query |