这里的setTimeout 0是解决什么问题呢

Question

  if (!this.isShown()) {    return;  }  this.$container.trigger('beforeHide.modal.cmp', {modal: this});  this.$container.addClass(HIDE_CLS);  setTimeout(function () {    this.$container.trigger('afterHide.modal.cmp', {modal: this});  }.bind(this), 0);