framework/js/lib/utils/classList.js
Toby Zerner a9ded36b57 Major CSS revamp
- Get rid of Bootstrap (except we still rely on some JS)
- Use BEM class names
- Rework variables/theme config
- Fix various bugs, including some on mobile

The CSS is still not ideal – it needs to be cleaned up some more. But
that can be a focus for after beta.
2015-07-17 14:47:49 +09:30

27 lines
564 B
JavaScript

/**
* The `classList` utility creates a list of class names by joining an object's
* keys, but only for values which are truthy.
*
* @example
* classList({ foo: true, bar: false, qux: 'qaz' });
* // "foo qux"
*
* @param {Object} classes
* @return {String}
*/
export default function classList(classes) {
let classNames;
if (classes instanceof Array) {
classNames = classes.filter(name => name);
} else {
classNames = [];
for (const i in classes) {
if (classes[i]) classNames.push(i);
}
}
return classNames.join(' ');
}