device-asset is used to read the browser's window + screen to calculate the best file size you should use for a given asset. Additionally,
you can pass options like base and ext to immediately create the correct filename path.
- iphone 4
- iphone 5
- iphone 6
- iphone 6 plus
- ipad
- ipad air
- ipad retina
- ipad pro
- samsung galaxy
- surface 3
- android
- android hd
Use anywhere you have a global window and screen object.
Filenames will become back as a string that corresponds to the keys in config.json.
var da = require('device-asset');
da.getAsset();will produce a response:
{
"displayName": "iPhone 6 Plus",
"fileName": "iphone_6_plus",
"res": {
"w": 1242,
"h": 2208
}
}Additionally, you can pass options base or ext like so:
var da = require('device-asset');
da.getAsset({
base: 'http://mysite.com/images/',
ext: 'jpg'
});will produce a response with useful fileName:
{
"displayName": "iPhone 6 Plus",
"fileName": "http://mysite.com/images/iphone_6_plus.jpg",
"res": {
"w": 1242,
"h": 2208
}
}If you're feeling extra lucky, you can pass your own config (use the structure in config.json).
var da = require('device-asset');
var customConfig = {
"custom_thing": {
"displayName": "Custom Thing",
"fileName": "custom_thing",
"res": {
"w": 600,
"h": 800
}
},
"custom_thing_2": {
"displayName": "Custom Thing 2",
"fileName": "custom_thing 2",
"res": {
"w": 200,
"h": 300
}
}
}
da.getAsset({
base: 'http://mysite.com/images/',
ext: 'jpg'
}, customConfig);You can also get the default config by using getDevices.
var da = require('device-asset');
function getOptions(devices) {
return Object.keys(devices).map(function(d) {
var elm = document.createElement('option');
elm.value = devices[k].fileName;
elm.innerHTML = devices[k].displayName
return elm;
});
}
var devices = getOptions(da.getDevices());To use outside of NPM, require the device-asset-min.js file in your project which will expose a global deviceAsset object.
<html>
<head>
<title>Page</title>
</head>
<body>
<div id="mount"></div>
<script type="text/javascript" src="/device-asset-min.js"></script>
<script>
var bestAsset = deviceAsset.getAsset({
base: 'http://mysite.com/images/',
ext: 'jpg'
});
var image = document.createElement('img');
image.src = bestAsset.fileName;
var container = document.getElementById('mount');
container.appendChild(image);
</script>
</body>
</html>