我可以让我的 Angular 应用程序兼容所有版本的 IE 吗？

Question

我想让我的 Angular 6 应用程序与 IE 版本 7-11 兼容。我不知道这是否可能。我遵循了另一篇关于 polyfills 文件的建议，但没有运气。

我的 polyfil 看起来像：

/**
 * This file includes polyfills needed by Angular and is loaded before the app.
 * You can add your own extra polyfills to this file.
 *
 * This file is divided into 2 sections:
 *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
 *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
 *      file.
 *
 * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
 * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
 * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
 *
 * Learn more in https://angular.io/docs/ts/latest/guide/browser-support.html
 */

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

到目前为止，我在所有版本的 IE 中都遇到了一堆错误，除了 IE 11。 例如：

Error: Object doesn't support property or method 'bind' on the 3rd line here
var jsonpArray = window["webpackJsonp"] = window["webpackJsonp"] || [];
    var oldJsonpFunction = jsonpArray.push.bind(jsonpArray);
    jsonpArray.push = webpackJsonpCallback;
    jsonpArray = jsonpArray.slice();


Error: Expected identifier, string or number one the resolvePromise line
var value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ?
                    [] :
                    [parentPromiseValue]);
                resolvePromise(chainPromise, true, value);
            }

我不确定是否有什么我能做的，但我会很感激任何建议。如果您需要有关我的应用的更多信息，请告诉我。

Answer 1

来自 Angular 6 官方文档中的browser support，Angular 6 仅支持 即 9-11。所以我认为我们无法在 IE

要支持 IE 9-11，您还可以取消注释 import 'core-js/es6/reflect'; 和 import 'web-animations-js';。简单的方法是在 polyfill.ts 中将所有 // import 替换为 import。之后，你需要用 npm 安装一些包：

npm install --save classlist.js
npm install --save web-animations-js

最后，在 index.html 中添加元标记 <meta http-equiv="X-UA-Compatible" content="IE=edge">。

此外，如果您的代码包含更多 IE 不支持的代码，那么您必须自己找到 polyfill 并导入。