Angular应用程序与Internet Explorer的兼容性

如何解决Angular应用程序与Internet Explorer的兼容性

我有一个Angular应用程序，该应用程序具有选择地图的功能，用户可以在该地图上选择货物的交货地点。

问题是这在IE中不起作用-地图打开，但未加载交货点。 另外，如果您增加或减少地图，地图只会冻结。

我尝试取消注释polyfills.ts中的数据，但这没有帮助。现在有以下代码：

/**
 * 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 'classlist.js';
/**
 * 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.
 */
import 'zone.js/dist/zone';  // Included with Angular CLI.


/***************************************************************************************************
 * APPLICATION IMPORTS
 */

import '@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js';

这是控制台的错误输出： console output

Error:Command not supported by object(23278,23)

解决方法

我可以看到您遇到错误对象不支持属性或方法“包含”

您收到此错误，因为IE浏览器不支持String.prototype.includes()方法和Array.prototype.includes()方法。

我建议您将以下polyfill添加到polyfill.ts文件中。

Watching for file changes with StatReloader
Performing system checks...

System check identified no issues (0 silenced).
Exception in thread django-main-thread:
Traceback (most recent call last):
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\base\base.py",line 217,in ensure_connection       
    self.connect()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\base\base.py",line 195,in connect
    self.connection = self.get_new_connection(conn_params)
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\postgresql\base.py",line 178,in get_new_connection
    connection = Database.connect(**conn_params)
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\psycopg2\__init__.py",line 127,in connect
    conn = _connect(dsn,connection_factory=connection_factory,**kwasync)
psycopg2.OperationalError: could not connect to server: Connection refused (0x0000274D/10061)
        Is the server running on host "localhost" (::1) and accepting
        TCP/IP connections on port 5432?
could not connect to server: Connection refused (0x0000274D/10061)
        Is the server running on host "localhost" (127.0.0.1) and accepting
        TCP/IP connections on port 5432?


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\threading.py",line 917,in _bootstrap_inner
    self.run()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\threading.py",line 865,in run
    self._target(*self._args,**self._kwargs)
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\utils\autoreload.py",line 54,in wrapper
    fn(*args,**kwargs)
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\management\commands\runserver.py",line 120,in inner_run
    self.check_migrations()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\management\base.py",line 453,in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\migrations\executor.py",line 18,in __init__
    self.loader = MigrationLoader(self.connection)
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\migrations\loader.py",line 49,in __init__
    self.build_graph()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\migrations\loader.py",line 212,in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\migrations\recorder.py",line 73,in applied_migrations
    if self.has_table():
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\migrations\recorder.py",line 56,in has_table
    return self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor())
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\base\base.py",line 256,in cursor
    return self._cursor()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\base\base.py",line 233,in _cursor
    self.ensure_connection()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\base\base.py",in ensure_connection
    self.connect()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\utils.py",line 89,in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\base\base.py",in ensure_connection
    self.connect()
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\base\base.py",**kwasync)
django.db.utils.OperationalError: could not connect to server: Connection refused (0x0000274D/10061)
        Is the server running on host "localhost" (::1) and accepting
        TCP/IP connections on port 5432?
could not connect to server: Connection refused (0x0000274D/10061)
        Is the server running on host "localhost" (127.0.0.1) and accepting
        TCP/IP connections on port 5432?

它可以帮助您解决此错误。

参考：

Object doesn't support property or method 'includes'