climb.js

/**
 * Climbs up the DOM up to but not including the limit element (or
 * `body` if not specified) looking for and returning the first
 * element that passes the predicate, or `null` if nothing does.
 *
 * @param {HTMLElement} start
 * @param {function} predicate
 * @param {HTMLElement} limit
 * @returns {*}
 */

export default function(start, predicate, limit){

  if(!start) return null;

  var cursor = start,
      lim = limit || document.body;

  while(cursor !== lim) {
    if(cursor === document.body) break;
    if(predicate(cursor)){
      return cursor
    }else{
      cursor = cursor.parentNode;
    }
  }

  return null;

};

package.json

{
  "name": "climb-es6",
  "version": "0.0.1",
  "main": "climb.js",
  "author": "Will Shown <[email protected]>",
  "license": "MIT"
}