Function getIsBinding

01.GettingStarted/js/vue.js:1611–1625

* Get "is" binding from an element. * * @param {Element} el * @param {Object} options * @return {Object|undefined}

(el, options)

   */

  function getIsBinding(el, options) {
    // dynamic syntax
    var exp = el.getAttribute('is');
    if (exp != null) {
      if (resolveAsset(options, 'components', exp)) {
        el.removeAttribute('is');
        return { id: exp };
      }
    } else {
      exp = getBindAttr(el, 'is');
      if (exp != null) {
        return { id: exp, dynamic: true };
      }
    }
  }

  /**
   * Option overwriting strategies are functions that handle