Parse and stringify the HTML
<img>srcset attribute.
Can be useful if you're creating a build-tool.
$ npm install srcset
How an image with srcset might look like:
<img
alt="The Breakfast Combo"
src="banner.jpg"
srcset="banner-HD.jpg 2x, banner-phone.jpg 100w"
>Then have some fun with it:
const srcset = require('srcset');
const parsed = srcset.parse('banner-HD.jpg 2x, banner-phone.jpg 100w');
console.log(parsed);
/*
[
{
url: 'banner-HD.jpg',
density: 2
},
{
url: 'banner-phone.jpg',
width: 100
}
]
*/
parsed.push({
url: 'banner-super-HD.jpg',
density: 3
});
const stringified = srcset.stringify(parsed);
console.log(stringified);
/*
banner-HD.jpg 2x, banner-phone.jpg 100w, banner-super-HD.jpg 3x
*/Parse the HTML <img> srcset attribute.
Accepts a “srcset” string and returns an array of objects with the possible properties: url (always), width, height, and density.
Type: string
A “srcset” string.
Type: object
Type: boolean
Default: false
When enabled, an invalid “srcset” string will cause an error to be thrown. When disabled, a best effort will be made to parse the string, potentially resulting in invalid or nonsensical output.
Stringify SrcSetDefinitions. Accepts an array of SrcSetDefinition objects and returns a “srcset” string.
Type: array
An array of SrcSetDefinition objects. Each object should have a url field and may have width, height or density fields. When the strict option is true, only width or density is accepted.
Type: object
Type: boolean
Default: false
Enable or disable validation of the SrcSetDefinitions. When true, invalid input will cause an error to be thrown. When false, a best effort will be made to stringify invalid input, likely resulting in invalid srcset value.
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