Pace.js在IE 11中不起作用

Question

我有一个angular-cli项目。我还增加了速度。我在index.html <script src="assets/lib/pace/pace.min.js"></script>的头中添加了它。它在chrome中工作正常，但在IE-11中我得到了以下错误：

ERROR TypeError: Invalid calling object
      stack: "TypeError: Invalid calling object
   at scheduleTask (http://localhost:4200/polyfills.bundle.js:8607:13)
   at ZoneDelegate.prototype.scheduleTask (http://localhost:4200/polyfills.bundle.js:6279:21)
   at DELEGATE_ZS.onScheduleTask (http://localhost:4200/polyfills.bundle.js:6169:13)
   at ZoneDelegate.prototype.scheduleTask (http://localhost:4200/polyfills.bundle.js:6273:17)
   at Zone.prototype.scheduleTask (http://localhost:4200/polyfills.bundle.js:6104:17)
   at Zone.prototype.scheduleMacroTask (http://localhost:4200/polyfills.bundle.js:6127:13)
   at Anonymous function (http://localhost:4200/polyfills.bundle.js:8637:17)
   at proto[name] (http://localhost:4200/polyfills.bundle.js:7142:17)
   at Anonymous function (http://localhost:4200/vendor.bundle.js:63666:13)
   at Observable.prototype._trySubscribe (http://localhost:4200/vendor.bundle.js:4172:13)",
      Symbol(observable)_h.fo48yw1o6i8: undefined,
      Symbol(rxSubscriber)_g.fo48yw1o6i8: undefined

我做错了什么？

Answer 1

pace与zone.js v0.8.12中的更改之间存在冲突-详细信息请参见下面的内容。为了解决这个问题，我确保在加载zone.min.js和其他IE polyfills之后加载pace.min.js，它的效果非常好。

https://github.com/HubSpot/pace/issues/399

In the newest version of zone.js (0.8.12) using pace with it causes all XMLHttpRequests to fail with the error message:

TypeError: Unable to get property 'apply' of undefined or null reference
Please see my issue for more information. If I get time I'll try and fix the issue inside pace itself but I've already spent the good part of 3-4 hours trying to debug this issue so we'll see..

https://github.com/angular/zone.js/issues/816

After updating zone.js to the latest version (0.8.12) we started getting errors when loading an Angular page with angular/http calls in Internet Explorer 11 (works fine in Chrome). The request never initiates and there are a few errors in the console:

Unhandled Promise rejection: Unable to get property 'apply' of undefined or null reference ; Zone: <root> ; Task: Promise.then ; Value: TypeError: Unable to get property 'apply' of undefined or null reference TypeError: Unable to get property 'apply' of undefined or null reference
at scheduleTask (https://localhost:44334/dist/vendor.js?v=OQlIcABpA29sHMIhDRnH-EBWeJs6_U6bx7vEgZihM_8:142795:13)
at ZoneDelegate.prototype.scheduleTask (https://localhost:44334/dist/vendor.js?v=OQlIcABpA29sHMIhDRnH-EBWeJs6_U6bx7vEgZihM_8:140947:21)
at Zone.prototype.scheduleTask (https://localhost:44334/dist/vendor.js?v=OQlIcABpA29sHMIhDRnH-EBWeJs6_U6bx7vEgZihM_8:140772:17)
at Zone.prototype.scheduleMacroTask (https://localhost:44334/dist/vendor.js?v=OQlIcABpA29sHMIhDRnH-EBWeJs6_U6bx7vEgZihM_8:140795:13)
at Anonymous function (https://localhost:44334/dist/vendor.js?v=OQlIcABpA29sHMIhDRnH-EBWeJs6_U6bx7vEgZihM_8:142824:17)
at proto[name] (https://localhost:44334/dist/vendor.js?v=OQlIcABpA29sHMIhDRnH-EBWeJs6_U6bx7vEgZ
After digging around a bit, it looks like a very new bit of code could be causing this, introduced in PR #800

The exact line of failure is below, where oriAddListener is undefined, causing the above error :

oriAddListener.apply(data.target, ['readystatechange', newListener]); // line 110
Rolling zone.js back to 0.8.11 which was before that PR fixes the issue and works as expected.

Answer 2

正如@Dovev Hefetz所建议的，并在这个git线程中讨论，似乎可以肯定的是，在这种情况下，脚本加载的顺序会影响IE的行为。对于那些不确定如何在angular中的主脚本之后加载pace.min.js的人，请遵循以下简单的步骤。

确保将package.json中的zone.js更改为

或

• 从index.html中删除单个导入：

<script src="/pace/pace.js"></script> <link href="/pace/themes/pace-theme-barber-shop.css" rel="stylesheet" />

• In你的angular(-cli).json

1. Include _pace-theme_.css in the **styles** 

"styles": [ "src/assets/plugins/pace/pace-theme-flash.css", "src/styles.scss" ],

1. Include **pace.min.js** in the scripts

"scripts": [ "src/assets/plugins/pace/pace.min.js" ]

• 就是这样！这应确保在zone.js

之后加载pace

的好处： Angular支持现代浏览器和and浏览器。为了最大限度地利用它提供的功能，您的项目需要额外的小调整来支持一些库。一个很好的起点就是查看这个很棒的post。