Function Observer

06.Router/basic/js/vue.js:2108–2119

* Observer class that are attached to each observed * object. Once attached, the observer converts target * object's property keys into getter/setters that * collect dependencies and dispatches updates. * * @param {Array|Object} value * @constructor

(value)

   */

  function Observer(value) {
    this.value = value;
    this.dep = new Dep();
    def(value, '__ob__', this);
    if (isArray(value)) {
      var augment = hasProto ? protoAugment : copyAugment;
      augment(value, arrayMethods, arrayKeys);
      this.observeArray(value);
    } else {
      this.walk(value);
    }
  }

  // Instance methods