Similar to jQuery's $.fn.closest and $.fn.parents. Finds the closest parent that matches a selector.

$ npm install closest

• element - will check this elements parents
• selector - CSS selector to match parents
• checkSelf - check element. If falsey, will begin with element.parentNode and is synonymous to $.fn.parents. Otherwise, it's $.fn.closest.

Example:

var closest = require('closest');

closest(document.body, 'html') === document.documentElement
closest(document.body, 'body', true) === document.body
closest(document.documentElement, 'html') == null

MIT