I am trying to figure out why my angular 2 app is stuck on showing Loading... when running in IE 11.
Following someone's suggestion, I've tried this plunker, posted by someone on stack overflow, on both chrome and IE 11. Works fine on Chrome, but fails on IE 11. Same error, stuck on saying "Loading..."
The plunker is : https://plnkr.co/edit/6zVFbrH5yohwc714gBbk?p=preview
<!DOCTYPE html>
<html>
<head>
<script>document.write('<base href="' + document.location + '" />');</script>
<title>Router Sample</title>
<link rel="stylesheet" href="style.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/es6-shim/0.34.2/es6-shim.min.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.1/angular2-polyfills.js"></script>
<script src="https://code.angularjs.org/tools/system.js"></script>
<script src="https://code.angularjs.org/tools/typescript.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.1/Rx.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.1/angular2.dev.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.1/http.dev.js"></script>
<script>
System.config({
transpiler: 'typescript',
typescriptOptions: { emitDecoratorMetadata: true },
packages: {'src': {defaultExtension: 'ts'}}
});
System.import('src/boot')
.then(null, console.error.bind(console));
</script>
</head>
<body>
<my-app>loading...</my-app>
</body>
</html>
Anybody got any idea as to why IE 11 fails to run the angular 2 app?
Thank you!
This question is related to
angular
typescript
internet-explorer
The answer is
The latest version of angular is only setup for evergreen browsers by default...
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.
This also includes firefox, although not mentioned.
See here for more information on browser support along with a list of suggested polyfills for specific browsers. https://angular.io/guide/browser-support#polyfill-libs
This means that you manually have to enable the correct polyfills to get Angular working in IE11 and below.
To achieve this, go into polyfills.ts (in the src folder by default) and just uncomment the following imports:
/***************************************************************************************************
* 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/set';
Note that the comment is literally in the file, so this is easy to find.
If you are still having issues, you can downgrade the target property to es5 in tsconfig.json as @MikeDub suggested. What this does is change the compilation output of any es6 definitions to es5 definitions. For example, fat arrow functions (()=>{}) will be compiled to anonymous functions (function(){}). You can find a list of es6 supported browsers here.
Notes
• I was asked in the comments by @jackOfAll whether IE11 polyfills are loaded even if the user is in an evergreen browser which doesn't need them. The answer is, yes they are! The inclusion of the IE11 polyfills will take your polyfill file from ~162KB to ~258KB as of Aug 8 '17. I have invested in trying to solve this however it does not seem possible at this time.
• If you are getting errors in IE10 and below, go into you package.json and downgrade webpack-dev-server to 2.7.1 specifically. Versions higher than this no longer support "older" IE versions.
Uncomment IE section in the src/polyfill.js,
/** IE10 and IE11 requires the following for NgClass support on SVG elements*/
import 'classlist.js';
If any build error for missing package then,
npm install classlist.js --save-exact
Make sure to include below line to set the default IE document mode. Other wise it will open in version 7
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
EDIT 2018/05/15: This can be achieved with a meta tag; please add that tag to your index.html and disregard this post.
This is not a complete answer to the question (for the technical answer please refer to @Zze's answer above), but there's an important step that needs to be added:
COMPATIBILITY MODE
Even with the appropriate polyfills in place, there are still issues with running Angular 2+ apps using the polyfills on IE11. If you are running the site off an intranet host (ie. if you are testing it at http://localhost or another mapped local domain name), you must go into Compatibility View settings and uncheck "Display intranet sites in Compatibility View", since IE11's Compatibility View breaks a couple of the conventions included in the ES5 polyfills for Angular.
As of September 2017 (node version=v6.11.3, npm version=3.10.10), this is what worked for me (thanks @Zze):
Edit polyfills.ts and uncomment the imports that are necessary for IE11.
More preciselly, edit polyfills.ts (located in the src folder by default) and just uncomment all lines required for IE11 (the comments inside the file explain exactly what imports are necessary to run on IE11).
A small warning: pay attention when uncommenting the lines for classlist.js and web-animations-js. These commented lines have a specific comment each: you must run the associated npm commands before uncommenting them or processing of polyfills.ts will break.
As a word of explanation, the polyfills are pieces of code that implement a feature on a web browser that do not support it. This is why in the default polyfills.ts configuration only a minimal set of imports is active (because it's aiming the so-called "evergreen" browsers; the last versions of browsers that automatically update themselves).
How to resolve this problem in Angular8
polyfills.ts uncomment import 'classlist.js'; and import 'web-animations-js'; then install two dependency using npm install --save classlist.js and npm install --save web-animations-js.
update tsconfig.json with "target":"es5",
then ng serve run the application and open in IE, it will work
If none of the other solutions work for you, it's worth investigating the source of the problem. It may be than an npm module directly inserts ES6 code, which cannot be transpiled.
In my case I had the
SCRIPT1002: Syntax error vendor.js (114536,27) at the following line:
const ucs2encode = array => String.fromCodePoint(...array);
I searched the node_modules folder and found from which file the line came. It turned out that the culprit was punycode.js which in it's 2.1.0 version uses ES6 directly.
After I downgraded it to 1.4.1, which uses ES5, the problem was solved.
- Un-comment some imports in the polyfill.ts file.
/** IE9, IE10 and IE11 requires all of the following polyfills. **/_x000D_
import 'core-js/es6/symbol';_x000D_
import 'core-js/es6/object';_x000D_
import 'core-js/es6/function';_x000D_
import 'core-js/es6/parse-int';_x000D_
import 'core-js/es6/parse-float';_x000D_
import 'core-js/es6/number';_x000D_
import 'core-js/es6/math';_x000D_
import 'core-js/es6/string';_x000D_
import 'core-js/es6/date';_x000D_
import 'core-js/es6/array';_x000D_
import 'core-js/es6/regexp';_x000D_
import 'core-js/es6/map';_x000D_
import 'core-js/es6/weak-map';_x000D_
import 'core-js/es6/set';Install npm Pacakages Notice there are some npm install commands in the comments. If you are using an early version of Angular CLI, there may also be a third one. For Angular CLI versions 7, 6, and 1.7 you need to run:
npm install --save classlist.js
npm install --save web-animations-js
now open IE and render your application and check :)
In polyfills.ts
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/es7/array';
import 'core-js/es6/regexp';
import 'core-js/es6/map';
import 'core-js/es6/weak-map';
import 'core-js/es6/weak-set';
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`.
/** Evergreen browsers require these. **/
import 'core-js/es6/reflect';
import 'core-js/es7/reflect';
/**
* Required to support Web Animations `@angular/animation`.
* Needed for: All but Chrome, Firefox and Opera. http://caniuse.com/#feat=web-animation
**/
import 'web-animations-js'; // Run `npm install --save web-animations-js`.
I had the exact same issue and none of the solutions worked for me. Instead adding the following line in the (homepage).html under <head> fixed it.
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
Angular 9 out of the box should work absolutely fine in IE11 now.
I tried all of the suggestions listed here and none of them worked. However I did manage to track it down to a specific library I was importing in app.module (ZXingScannerModule to be precise). If your app is failing in IE11 on the first page, try removing libraries one at a time and check in IE11 - it was completely missed in all my build warning errors. If you do find this is the case, then consider compartmentalising the area of your site which uses this library as a lazy loaded module.
The latest version of core-js lib provides the polyfills from a different path. so use the following in the polyfills.js. And also change the target value to es5 in the tsconfig.base.json
/** IE9, IE10 and IE11 requires all of the following polyfills. **/
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';
As of Feb 2017
Using an Angular-Cli project, all lines in the polyfills.ts file were already uncommented so all polyfills were already being utilised.
I found this solution here to fix my issue.
To summarize the above link, IE doesn't support lambda arrow / fat arrow functions which are a feature of es6. (This is if polyfills.ts doesn't work for you).
Solution: you need to target es5 for it to run in any IE versions, support for this was only introduced in the new Edge Browser by Microsoft.
This is found under src/tsconfig.json:
"outDir": "../dist/out-tsc",
"sourceMap": true,
"target": "es5",
You'll need to adjust the polyfills.ts file for your target browsers by uncommenting the appropriate sections.
/** 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';
Step 1: Un-comment plyfills in polyfills.ts. Also run all npm install commands mentioned in in polyfills.ts file to install those packages
Step 2: In browserslist file remove not before the line where IE 9-11 support is mentioned
Step 3: In tsconfig.json file change like "target": "es2015" to "target": "es5"
These steps fixed my issue
changing tsconfig.json
"target":"es5",
solved my problem
If you have still problems that not all JavaScript functions are working add this line in your polyfills. It fixes the missing ‘values’ method:
import 'core-js/es7/object';
And this line fixes the missing ‘includes’ method:
import 'core-js/es7/array'
For me with iexplorer 11 and Angular 2 I fixed all those above issues by doing 2 things:
in index.html add:
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
in src\polyfills.ts uncomment:
/** 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';
I was having the same issue, if you have enabled Display intranet sites in Compatibility View the polyfills.ts won't work, you still need to add the following line as has been told.
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
I tried every solution in this thread as well as bunch from other ones, with no success. What ended up fixing this for me was to update every package in my project, including MAJOR version changes. So:
- Run npm outdated
- Update package.json with the number shown in the current column from results (this can break your project, be careful)
- Run npm install
- Made sure I also had the polyfills uncommented as noted in the other answers.
That's it. I wish I could pinpoint which library was the culprit. The actual error I was getting was "Syntax Error" in vendor.js in Angular 6.
I have an Angular4 application, even for me also it was not working in IE11 browser, i have done below changes, now its working correctly. Just add below code in the index.html file
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
Just you need to uncomment these below lines from polyfills.ts file
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';
These above 2 steps will solve your problem, please let me know if anything will be there. Thanks!!!
I ran into this issue today. I found an solution on GitHub that does not require going to a later version of the beta.
Add the following script to your html:
<script src="node_modules/angular2/es6/dev/src/testing/shims_for_IE.js"></script>
This resolved the problem for me. For more details, you can follow the github issue here: https://github.com/angular/angular/issues/7144
What worked for me is I followed the following steps to improve my application perfomance in IE 11 1.) In Index.html file, add the following CDN's
<script src="https://npmcdn.com/[email protected]
beta.17/es6/dev/src/testing/shims_for_IE.js"></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/classlist/1.2.201711092/classList.min.js"></script>
2.) In polyfills.ts file and add the following import:
import 'core-js/client/shim';
Source: Stackoverflow.com