tui-code-snippet/domUtil/closest.js

TOAST UI Utility: CodeSnippet

/**
 * @fileoverview Find parent element recursively
 * @author NHN FE Development Lab <dl_javascript@nhn.com>
 */

'use strict';

var matches = require('./matches');

/**
 * Find parent element recursively
 * @param {HTMLElement} element - base element to start find
 * @param {string} selector - selector string for find
 * @returns {HTMLElement} - element finded or null
 * @memberof module:domUtil
 */
function closest(element, selector) {
  var parent = element.parentNode;

  if (matches(element, selector)) {
    return element;
  }

  while (parent && parent !== document) {
    if (matches(parent, selector)) {
      return parent;
    }

    parent = parent.parentNode;
  }

  return null;
}

module.exports = closest;