unique-selector/lib/getClasses.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getClasses = getClasses;
exports.getClassSelectors = getClassSelectors;
/**
 * Get class names for an element
 *
 * @pararm { Element } el
 * @return { Array }
 */
function getClasses(el) {
  var classNames = void 0;

  try {
    classNames = el.classList.toString().split(' ');
  } catch (e) {
    if (!el.hasAttribute('class')) {
      return [];
    }

    var className = el.getAttribute('class');

    // remove duplicate and leading/trailing whitespaces
    className = className.trim().replace(/\s+/g, ' ');

    // split into separate classnames
    classNames = className.split(' ');
  }

  return classNames;
}

/**
 * Returns the Class selectors of the element
 * @param  { Object } element
 * @return { Array }
 */
function getClassSelectors(el) {
  var classList = getClasses(el).filter(Boolean);
  return classList.map(function (cl) {
    return '.' + cl;
  });
}