Angular 2-TypeError:无法读取未定义的属性"apply" [英] Angular 2 - TypeError: Cannot read property 'apply' of undefined

问题描述

我正在开发一个非常简单的Angular 2应用程序，它只有一个组件，一个服务和一个接口，但是遇到了这个错误，经过几个小时的调查，我仍然找不到答案.

I'm developing a very simple Angular 2 application with only one component, one service and one interface but I came across this error and after a few hours of investigating I still can't find an answer.

Uncaught TypeError: Cannot read property 'apply' of undefined
    at XMLHttpRequest.desc.get [as ontimeout] (zone.js:1265)
    at XHRLocalObject.AbstractXHRObject._cleanup (abstract-xhr.js:149)
    at XMLHttpRequest.xhr.onreadystatechange (abstract-xhr.js:125)
    at XMLHttpRequest.wrapFn (zone.js:1230)
    at ZoneDelegate.invokeTask (zone.js:398)
    at Zone.runTask (zone.js:165)
    at XMLHttpRequest.ZoneTask.invoke (zone.js:460)

我真的不明白为什么错误会一直出现，错误出现后应用程序仍然可以运行，但是令人沮丧.

I can't really understand why the error is keeps appearing, the application is still functional after the mistake appears but it's frustrating.

有什么想法吗?

推荐答案

我遇到了同样的问题，我解决了降级到zone.js@0.8.5的问题，问题消失了.在您的项目文件夹中运行以下命令:

Hi I had the same problem and I solve this downgrading to zone.js@0.8.5 and the problem disappeared. Run the following command in your project folder:

npm install zone.js@0.8.5 --save

这篇关于Angular 2-TypeError:无法读取未定义的属性"apply"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！