githubmirror/materialize

js/component.js

46 строк1 KB

Chang Alan

Added undefined check and cash check in component.init

02 фев 2018, 00:38

02 фев 2018, 00:38b5e426f

class Component {
  /**
   * Generic constructor for all components
   * @constructor
   * @param {Element} el
   * @param {Object} options
   */
  constructor(classDef, el, options) {
    // Display error if el is valid HTML Element
    if (!(el instanceof Element)) {
      console.error( Error(el + ' is not an HTML Element'));
    }

    // If exists, destroy and reinitialize in child
    let ins = classDef.getInstance(el);
    if (!!ins) {
      ins.destroy();
    }

    this.el = el;
    this.$el = cash(el);
  }


  /**
   * Initializes components
   * @param {class} classDef
   * @param {Element | NodeList | jQuery} els
   * @param {Object} options
   */
  static init(classDef, els, options) {
    let instances = null;
    if (els instanceof Element) {
      instances = new classDef(els, options);

    } else if (!!els && (els.jquery || els.cash || els instanceof NodeList)) {
      let instancesArr = [];
      for (let i = 0; i < els.length; i++) {
        instancesArr.push(new classDef(els[i], options));
      }
      instances = instancesArr;
    }

    return instances;
  }
}