I'm trying to add an external js file into my Angular2 project by adding the record to my angular-cli.json file.
I've added a file to the [scripts] array as below:
"scripts": ["https://as-identitydemo--c.na50.visual.force.com/resource/1495420277000/salesforce_login_widget_js"],
all the other posts that i've read refer to using this format for something that's either hosted locally, or installed in the node_modules etc..
How can I include an external js library and utilize that in my project?
You should import the library in your index.html in the head tag.
Second you have to make the library visible to your Angular project. That means you need the typings. You can either search https://github.com/DefinitelyTyped
for already existing types or add the types to the typings.d.ts file.
Example:
In your page (outside of the Angular app) you might have a javascript global variable:
var testVar = 'testvalue';
Then in the typings.d.ts you can make this variable globally accessible by adding
declare var testVar:string;
Then you can access this variable in the whole Angular project like that:
console.log(testVar);
The same you can do with functions in external libraries.
Here is a Plunk that shows that (without having a typings file). Hope this helps.
Related
I have a very old AngularJS project which is quite big. Instead of creating a bundled .js file composed of all the required code, this project is organized in the following way:
All the .js files are directly loaded in index.html with a <script src="path/to/js">
Even the dependencies minified .js files are loaded in the same way, examples:
<script src="bower_components/angular-route/angular-route.min.js"></script>
<script src="bower_components/angular-resource/angular-resource.min.js"></script>
<script src="bower_components/angular-cookies/angular-cookies.min.js"></script>
The code makes vast use of definitions (functions, classes, enums and so on) declared in different .js files without importing them (because they are all available globally). Examples:
// inside one file, PastFuture is not declared here
if (self.pastFuture === PastFuture.FUTURE) {
... // do something
}
// inside another file, it is not exported or anything, it is just defined
const PastFuture = {
PAST: 'PAST',
FUTURE: 'FUTURE'
};
I want to migrate this project into something a bit more "standard". I've removed bower for npm dependencies but now I'm stuck at forcing all these .js files to get bundled together.
The major problem of the code is that once bundled with browserify, all the definitions not imported stops working, for example, PastFuture is not defined unless I import it manually wherever is required.
Is there a way to overcame / solve this problem without adding exports and require in all the files of the project?
I was thinking that if I concatenate all those .js files instead of trying to make them require each other, it would have the safe effect without the need to add exports and imports.. but as a solution, it just sounds like a hack to me and I was searching for something more correct.
I have a project consisting of a TypeScript file and an HTML page. Currently, I am loading several libraries that the TypeScript file requires in the HTML Page by including them in tags, i.e. <script src="https://unpkg.com/tabulator-tables#4.9.3/dist/js/tabulator.min.js"></script>.
Since I would like to use the TypeScript code in other web pages without having to copy a bunch of script tags, is there a way I could load the libraries in the TypeScript file instead of in the HTML file? I tried searching it up and saw some options (for example, import and export) but just using import {Tabulator} from 'tabulator-tables'; obviously didn't work, and I'm somewhat lost.
Because you stated that you're not using any bundler, and that you don't want to use a UMD module in a <script> element, you'll need a version of tabulator-tables that is in the ES module format. It looks like the package provides one at https://unpkg.com/tabulator-tables#4.9.3/dist/js/tabulator.es2015.min.js. You can download that file locally to your project and import from it in your script like this:
import Tabulator from './relative/path/to/where/you/saved/tabulator.es2015.min.js';
You'll need to publish that downloaded module alongside your HTML file, JS file, etc. wherever you're serving the web page, and make sure that you set your own script's type attribute to module in the HTML.
I am trying to import a module from a generated Angular library bundle located inside a vendor subfolder under src/.
index.html
<head>
...
<script type="text/javascript" charset="utf-8" src="./vendor/example/bundles/example.umd.js"></script>
</head>
Nevertheless, I am having some troubles importing module from this in my app.module.ts. Please, any idea of how to do it?
It seems that #angular/core and #angular/common peerDependencies of angular library should also be bundled inside script to work correctly.
I will appreciate any kind of help
You shouldn't add a <script> tag that refers to a local file because this local file won't be included in the build.
Instead, use the scripts configuration section of the angular.json file, like this:
"scripts": [
{ "input": "src/vendor/example/bundles/example.umd.js" }
]
This will embed the example.umd.js file inside a dedicated file of the Angular's build. As it's packaged as UMD, an object will be attached to window which contains the API of the library you are importing.
In order to stop TypeScript for complaining about a non-existent variable, just add this: declare var example; (replace example with the real name of the global object).
I want to use an external javascript library in an angular 4 component but I am having trouble using it.
The library I want to install is the plaid link library and I have downloaded the .js file and added it to the assets folder and included it into angular-cli.json scripts location.
The object imported from the class is giving me the error Plaid is not defined. How can I successfully include the pure javascript file into angular typescript?
This is the file I would like to include:
https://cdn.plaid.com/link/v2/stable/link-initialize.js
Thanks
It looks like your library has a Plaid object, which is not known to the TypeScript compiler.Create a file src/typings.d.ts with the following content:
declare var Plaid: any;
Or you can declare this variable inside your component:
var Plaid: any;
Attempting to wrap my head around Ember.js.
Seems I understand the complex things, but miss out on the little things.
How would one go about adding an example.js file?
For simplicity, let's say the example.js file only contains:
(function(){
console.log("example is alive in console");
})(window);
This should display "example is alive in console" within the browser console.
I have tried:
adding app.import('vendor/javascripts/example.js'); within ember-cli-build.js and adding <script src="{{rootURL}}vendor/javascripts/example.js"></script> to index.html
Console is showing
ⓧ GET http://localhost:4200/vendor/javascripts/example.js
DEBUG: -------------------------------
DEBUG: Ember : 2.11.3
DEBUG: Ember Data : 2.12.1
DEBUG: jQuery : 3.2.1
DEBUG: -------------------------------
ⓧ GET http://localhost:4200/vendor/javascripts/example.js
All of the answers I have found stated that just adding custom.js to vendor file works. Sadly, I am missing something.
When modifying ember-cli-build.js you MUST RESTART the ember server manually. The livereload server will not pick up the changes.
This works for me when I don't nest assets in the /vendor directory. The ember-cli build process bundles JS files in /vendor into a single vendor.js file, which you can see linked in app/index.html. So place your example.js file at the root of /vendor, and then add the import to ember-cli-build.js:
app.import('vendor/example.js`);
Now when you start the server, your code from example.js should execute, since it will be included in assets/vendor.js.
Firstly, Ember.js has Convention Over Configuration approach, and your URL can do a lot of things than a normal HTML website.
Whatever you may want to do with your custom.js file it is not ember way of having it as a path. You need routes for navigation across the app. Although routes do much more than navigation. You specify the structure of your app that a user can browse through using Router's map function in app/router.js file.
However if you want to include custome.js file in your app, and have custom.js do some set of tasks for your app. You can simply go ahead and create a directory with any name, javascript for instance inside app directory. Have your javascript files placed inside it. Then you can import these files as simply as referencing any other files in ember:
import customObject from 'yourApp/javascript/custom.js';
Here, your custom.js should be exporting customObject.
Do read the guides if you want to learn more. And the API docs if you actually want to learn more.
Note: At the time of writing this answer current ember-cli version is #2.12.0