TypeError：无法在IE 10上获取未定义或空引用的属性“ngMetadataName” [英] TypeError: Unable to get property 'ngMetadataName' of undefined or null reference on IE 10

问题描述

在IE 10中，我收到以下错误:(但在IE 11中确定）

In IE 10, I got the following error: (but OK in IE 11)

TypeError：无法获取属性'ngMetadataName '未定义或空引用

TypeError: Unable to get property 'ngMetadataName' of undefined or null reference

在<找到属性 ngMetadataName code> vendor.js 。

The property ngMetadataName has been found in vendor.js.

polyfills.ts 是如下：

The polyfills.ts is as the following:

  /******************************************************************************* 

BROWSER POLYFILLS
*/
/** IE9, IE10 and IE11 requires all of the following polyfills. **/
import 'core-js/es6/symbol';
import 'core-js/es6/object';
import 'core-js/es6/function';
import 'core-js/es6/parse-int';
import 'core-js/es6/parse-float';
import 'core-js/es6/number';
import 'core-js/es6/math';
import 'core-js/es6/string';
import 'core-js/es6/date';
import 'core-js/es6/array';
import 'core-js/es6/regexp';
import 'core-js/es6/map';
import 'core-js/es6/weak-map';
import 'core-js/es6/set';

/** IE10 and IE11 requires the following for NgClass support on SVG elements */
import 'classlist.js'; // Run npm install --save classlist.js.

/** IE10 and IE11 requires the following for the Reflect API. */
import 'core-js/es6/reflect';

/** Evergreen browsers require these. **/
// Used for reflect-metadata in JIT. If you use AOT (and only Angular decorators), you can remove.
import 'core-js/es7/reflect';

/**

Web Animations @angular/platform-browser/animations
Only required if AnimationBuilder is used within the application and using IE/Edge or Safari.
Standard animation support in Angular DOES NOT require any polyfills (as of Angular 6.0).
**/
import 'web-animations-js'; // Run npm install --save web-animations-js.
/**

By default, zone.js will patch all possible macroTask and DomEvents
user can disable parts of macroTask/DomEvents patch by setting following flags
*/
// (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
// (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
// (window as any).__zone_symbol__BLACK_LISTED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames

/*

in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
with the following flag, it will bypass zone.js patch for IE/Edge
*/
(window as any).__Zone_enable_cross_context_check = true;
/***************************************************************************************************

Zone JS is required by default for Angular itself.
*/
import 'zone.js/dist/zone'; // Included with Angular CLI.
/***************************************************************************************************

APPLICATION IMPORTS
*/

可以你建议如何为IE 10解决这个问题。

Can you please suggest how to resolve this for IE 10.

谢谢

推荐答案

我已将 angular-cli 从6.0.8更新为6.2.3（最新），它解决了上述错误。

I have updated the angular-cli from 6.0.8 to 6.2.3 (Latest) and it solved the above error.

这链接 github＃24339 可能会有所帮助。

This link github#24339 might be helpful.

感谢@Suresh Kumar Ariya

Thanks to @Suresh Kumar Ariya

这篇关于TypeError：无法在IE 10上获取未定义或空引用的属性“ngMetadataName”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！