Exporting External JavaScript Variables in Angular 2 Using Typescript

Question

Exporting External JavaScript Variables in Angular 2 Using Typescript

In my Configuration JS file, I have defined some configuration variables. For example:

var config = {url:"xyz.com"};

I need to access these configuration parameters throughout my application.

I attempted to export the config variables like this:

export var appConfig = config;

However, I encountered an error saying "cannot get property url of undefined."

typescript angular export

Answer 1

Answer №1

To start, make sure to set allowJs to true in the compiler options of tsconfig.json file:

{ "compilerOptions": { "allowJs": true,

Next,

you need to create a JavaScript file within the app directory. This file can be placed in any folder or component. For instance, app/javascriptTest.js

Within the app/javascriptTest.js file, if you want to export a variable A, simply write:

export var A = 2;

Now, in the TypeScript file where you want to import the variable A (e.g., app/componentName/header.ts), you can import it at the top like this:

import { A } from "../javascriptTest.js"

Finally, in the TypeScript file (e.g., app/componentName/header.ts), you are now able to use the A variable within your code.

let x="Hello "+A;

I hope this explanation helps clarify things for you.

Answer 2

To start, make sure to set allowJs to true in the compiler options of tsconfig.json file:

{ "compilerOptions": { "allowJs": true,

Next,

you need to create a JavaScript file within the app directory. This file can be placed in any folder or component. For instance, app/javascriptTest.js

Within the app/javascriptTest.js file, if you want to export a variable A, simply write:

export var A = 2;

Now, in the TypeScript file where you want to import the variable A (e.g., app/componentName/header.ts), you can import it at the top like this:

import { A } from "../javascriptTest.js"

Finally, in the TypeScript file (e.g., app/componentName/header.ts), you are now able to use the A variable within your code.

let x="Hello "+A;

I hope this explanation helps clarify things for you.

Answer 3

Answer №2

To access the configuration in Angular DI, you can specify it using a unique string key (or OpaqueToken) and retrieve it using @Inject('specificKey'):

var settings = {apiKey:"123456"};

bootstrap(AppComponent, [provide('mySettings', {useValue: settings})]);

export class AnotherComponent { // or AnotherService
  constructor(@Inject('mySettings') private settings) {}
}

Answer 4

To access the configuration in Angular DI, you can specify it using a unique string key (or OpaqueToken) and retrieve it using @Inject('specificKey'):

var settings = {apiKey:"123456"};

bootstrap(AppComponent, [provide('mySettings', {useValue: settings})]);

export class AnotherComponent { // or AnotherService
  constructor(@Inject('mySettings') private settings) {}
}

Answer 5

Answer №3

I need to be able to utilize these configuration settings throughout my entire application.

To make these settings accessible, simply export the config.ts file:

export const config = {url:"xyz.com"};

Then, import it wherever necessary:

import {config} from "./path/to/config";

And remember, no need for the .ts extension at the end.

Answer 6

I need to be able to utilize these configuration settings throughout my entire application.

To make these settings accessible, simply export the config.ts file:

export const config = {url:"xyz.com"};

Then, import it wherever necessary:

import {config} from "./path/to/config";

And remember, no need for the .ts extension at the end.

Exporting External JavaScript Variables in Angular 2 Using Typescript

Answer №1

Answer №2

Answer №3

Similar questions

Testing Vue components with Typescript and Jest does not display the expected values in the HTML output

Unable to locate the image file path in React.js

Performing a `npm install` within a subfolder of a Git repository

Checkboxes within Angular's reactive forms are a powerful tool for creating dynamic user

Detecting clicks outside of a component and updating its state using Typescript in SolidJS

In Angular 2 Type Script service, make sure to include the @angular/core module for proper functionality as the 'require' method may not

What is the best way to create a universal function that can return a promise while also passing along event

I am eager to perform DOM manipulation similar to jQuery but within the context of Angular 6

Utilize D3 for showcasing SVG graphics inside an Angular Element

Assign the primeng dropdown's value to the model in a reactive form

What could be causing IdentityServer 4 code flow to intermittently receive an invalid_grant response?

Is there a way to divide v-progress linear into 4 pieces in Vuejs, or are there alternative design options for achieving this in Vuetify 2?

Adjusting the content of mat-cards to fill in blank spaces

Error: The function call does not match any of the overloads. 'VueRouter' is not recognized

Using TypeScript to send state through history.push({...})

"Retrieving an element from an array may result in a value of

Error occurs when the directive is not being applied due to the usage of the "attr" host attribute

Learning how to use arrow functions with the `subscribe` function in

JSX conditionally rendering with an inline question: <option disabled value="">Select an option</option>

The incredible power of the MongoDB $inc field