javascript - 如何在Promise中执行resolve或reject后执行一些代码

Question

我有一个可能在 api 调用后解析或拒绝的 promise ，我想在解析或拒绝回调中执行一些代码，我想在这些回调完成后执行一些其他代码。如何实现。

ApiHelper.myPromise.call(this, 'Event').then(function(response) {
            ToolsHelper.DynamicAttributes.setDAMetaDataCache.call($this, 'Event', response, '#addEventDynamicAttribute');
            ApiHelper.ApiResponseHandler.hideSpinner();

            var eventEditFormView = new EventEditFormView({'parentObj': $this.parentObj, 'method': 'add'});
            eventEditFormView.context['dynamicAttributeMetaData'] = $this.context['dynamicAttributeMetaData'];
            eventEditFormView.context['newAccordions'] = $this.context['newAccordions'];
            $this.$('#event-edit').append(eventEditFormView.$el);
            eventEditFormView.render();
            eventEditFormView.delegateEvents();
        }).catch(function(response) {console.log('err', response);
            ApiHelper.ApiResponseHandler.logError(response, 'event_base_view', ' setDynamicAttributes', 'catalog/metadata/v3/dynamicattributes', 'v3');
            ApiHelper.ApiResponseHandler.hideSpinner();
        });

Answer 1

您可以将 then 链接在一起。如果任何 then 抛出错误，它将进入 catch。

     ApiHelper.myPromise.call(this, 'Event')
     .then(function(response){
         ApiHelper.ApiResponseHandler.hideSpinner();
         return response;
     }
     .then(function(response) {
     ToolsHelper.DynamicAttributes.setDAMetaDataCache.call($this, 'Event', response, '#addEventDynamicAttribute');
        //ApiHelper.ApiResponseHandler.hideSpinner();

        var eventEditFormView = new EventEditFormView({'parentObj': $this.parentObj, 'method': 'add'});
        eventEditFormView.context['dynamicAttributeMetaData'] = $this.context['dynamicAttributeMetaData'];
        eventEditFormView.context['newAccordions'] = $this.context['newAccordions'];
        $this.$('#event-edit').append(eventEditFormView.$el);
        eventEditFormView.render();
        eventEditFormView.delegateEvents();
    }).catch(function(response) {console.log('err', response);
        ApiHelper.ApiResponseHandler.logError(response, 'event_base_view', ' setDynamicAttributes', 'catalog/metadata/v3/dynamicattributes', 'v3');
        //ApiHelper.ApiResponseHandler.hideSpinner();
    });