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这是我的 Angular 版本：

Angular CLI: 12.2.6
Node: 16.13.2 (Unsupported)
Package Manager: npm 8.1.2
OS: win32 x64

Angular: 12.2.6
... animations, cdk, cli, common, compiler, compiler-cli, core
... forms, material, material-moment-adapter, platform-browser
... platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1202.6
@angular-devkit/build-angular   12.2.6
@angular-devkit/core            12.2.6
@angular-devkit/schematics      12.2.6
@angular/flex-layout            12.0.0-beta.35
@schematics/angular             12.2.6
rxjs                            6.6.3
typescript                      4.2.4

我有一个 Angular 应用程序，可以在最新版本的 Chrome 和 Edge 上正常运行，但我们的大多数客户都在使用 IE11，或者真正的旧版 Chrome（例如：Chrome 45）。所以我需要使应用程序与所有这些浏览器兼容。

我尝试先解决 IE 11 的问题。到达应用程序主页时，我最初有一个空白页面。

我做了以下更改：

  1. 我已将tsconfig文件更改如下：
"target": "es5",
"lib": [
      "es5",
      "es2015.promise",
      "es6",
      "es7",
      "es2018",
      "dom"
    ]
  1. 我已将我的polyfill.ts文件更新如下：
/**
 * 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/guide/browser-support
 */

/***************************************************************************************************
 * BROWSER POLYFILLS
 */

/** IE10 and IE11 requires the following for NgClass support on SVG elements */
//import 'classlist.js';  // Run `npm install --save classlist.js`.
import 'core-js/es/symbol';
import 'core-js/es/object';
import 'core-js/es/function';
import 'core-js/es/parse-int';
import 'core-js/es/parse-float';
import 'core-js/es/number';
import 'core-js/es/math';
import 'core-js/es/string';
import 'core-js/es/date';
import 'core-js/es/array';
import 'core-js/es/regexp';
import 'core-js/es/map';
import 'core-js/es/weak-map';
import 'core-js/es/set';
import 'core-js/es/promise';


/**
 * 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
 * because those flags need to be set before `zone.js` being loaded, and webpack
 * will put import in the top of bundle, so user need to create a separate file
 * in this directory (for example: zone-flags.ts), and put the following flags
 * into that file, and then add the following code before importing zone.js.
 * import './zone-flags.ts';
 *
 * The flags allowed in zone-flags.ts are listed here.
 *
 * The following flags will work for all browsers.
 *
 * (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__UNPATCHED_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.
 */
(window as any).__Zone_enable_cross_context_check = true;
import 'zone.js/dist/zone'; // Included with Angular CLI.


/***************************************************************************************************
 * APPLICATION IMPORTS
 */
  1. 我已经更新了我的browserslist文件如下
> 0.5%
last 2 versions
Firefox ESR
not dead
IE 9-10 # For IE 9-11 support, remove 'not'.
  1. 我有以下 babelrc 文件：
{
  "presets": [
    ["@babel/presets-env", {
      "targets": {
        "browsers": {
          "ie": "11"
        }
      },
    }]
  ]
}

有了这个配置，在 IE 11 中我终于可以看到我的登录页面了。我的登录页面有以下“登录”按钮：

<div>
          <button mat-flat-button [disabled]="!this.credentials.password"
            [ngClass]="{'button-action': this.credentials.login && this.credentials.password}" class=" full-width "
           (click)="alert('lalalalala')"><span class="fs-12 light">LOGIN</span></button>
        </div>
  1. 我真的需要 babelrc 文件还是只需要更新 tsconfig 文件和 polyfill.ts 文件？
  2. alertAngular 材料不支持 IE11是不是事件未触发的原因onclick？
  3. 我尝试使用 Firefox 42 启动我的应用程序，但出现以下我不明白的错误：
TypeError: client.onOpen is not a function

Unhandled Promise rejection: zone.onStable.emit is not a function ; Zone: <root> ; Task: Promise.then ; Value: TypeError: zone.onStable.emit is not a function

谢谢您的帮助！

编辑：我能够尝试/捕获登录调用并警告错误。错误是ReferenceError: crypto is not defined。有任何想法吗？

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0 回答 0