Make strings safe for CSS. Useful for data-driven CSS class names.
Transform to lowercase, replace spaces with dashes, and replace all other characters (but a-z) with their double-underscore-prefixed zero-padded-to-4-characters hexadecimal Unicode index.
For example, I use this on websites to add a CSS class to each page's <body> based on its title or URI, to allow targeting it uniquely.
via npm:
$ npm install --save css-safeSupports Node, AMD, browser global via UMD.
var cssSafe = require('css-safe');
var safe;
safe = cssSafe('To do');
// 'to-do'
safe = cssSafe('Red, and blue.');
// 'red__002c-and-blue__0021'