!Dependencies Status


mediaquery

Turns human readable breakpoints into correct mediaqueries.

This is particularly useful when working with
window.matchMedia
or when you work with CSS dinamically using JavaScript.

Install

If you are using nodejs (but also browserify, webpack, etc...) you can simply
use npm:

npm install mediaquery

then you can

var MQ = require('mediaquery');

By the way you if you are not using node, you may use bower

bower install mediaquery

then you can use it from window.MQ or require it using AMD

Show me the code!

Assuming you have an object to describe the mediaqueries you need such as
``javascript
var myMedias = {
small: 300,
medium: 600,
tablet: 'tablet media query',
big: 1024,
huge: Infinity
};
`

Note that all the numerical values (Infinity included) will be automatically
sorted in the correct order, while all the strings will be considered custome
media queries; every other type of values will be stripped out.

So small: 300 means that my small media query will span from 0 to 300px,
while medium will be from 301px to 600px; finally huge will go from 1025px
to... Infinitely large screens.

If you do not specify an Infinity breakpoint a default breakpoint will be
created spanning from the biggest available breakpoint to infinity.

$3


You can use asObject to get back a similar object where the numbers for your
breakpoints are substituted with correct mediaqueries.

e.g.
`javascript
var MQ = require('mediaqueries');

MQ.asObject(myMedias);
`

will return
`javascript
{
small: 'screen and (max-width: 300px)',
medium: 'screen and (min-width: 301px) and (max-width: 600px)',
big: 'screen and (min-width: 601px) and (max-width: 1024px)',
huge: 'screen and (min-width: 1025px)',
tablet: 'tablet media query'
}
`

$3

You can also have an array of couples ['name', 'mediaquery'] in output.

e.g.
`javascript
MQ.asArray(myMedias);
`

will return
`javascript
[
['small', 'screen and (max-width: 300px)'],
['medium', 'screen and (min-width: 301px) and (max-width: 600px)'],
['big', 'screen and (min-width: 601px) and (max-width: 1024px)'],
['huge', 'screen and (min-width: 1025px)'],
['tablet', 'tablet media query']
]
`

$3


If you need to filter out the numerical breakpoints from a mixed object you can
use getBreakPoints e.g.

`javascript
MQ.getBreakPoints(myMedias);
`

will return
`
{
small: 300,
medium: 600,
big: 1024,
huge: Infinity // remember that Infinity is a number
}
`

$3

In the same way you may need to filter out all the custom strings e.g.

`javascript
MQ.getCustomQueries(myMedias);
`

will return
`
{
tablet: 'tablet media query'
}
``