Steps for importing jQuery to vendor.ts in Angular 2 webpack

Currently, I am in the process of setting up my Angular 2 app using webpack. As I review the vendor.ts file, I notice this specific structure.

// Angular 2
import '@angular/platform-browser';
import '@angular/platform-browser-dynamic';
import '@angular/core';
import '@angular/common';
import '@angular/http';
import '@angular/router';

// RxJS
import 'rxjs';


// Other vendors such as jQuery, Lodash, or Bootstrap
// You have the option to import js, ts, css, sass, and more...

While attempting to include jQuery into my project, I encountered an issue where it does not seem to work despite following a similar approach. Can anyone provide guidance on what could be going wrong? Your help is greatly appreciated.

import 'jquery/dist/jquery.min.js';

Curiously, while rxjs imports smoothly, integrating jQuery presents challenges. Any insights into why rxjs works but jquery encounters issues would be valuable :)

Answer №1

Here is the approach I took:

  1. I added an alias to my Webpack configuration file under the resolve section:

    resolve: {
        ...
        alias: { 
            jquery: "jquery/src/jquery"
        }
      }

    This allows for importing jQuery using

    import 'jquery';

    instead of

    import 'jquery/dist/jquery.min.js';

    in vendor.ts

  2. Utilize the Webpack ProvidePlugin to make jQuery and $ globally accessible:

    plugins: [
    ...
    new webpack.ProvidePlugin({
      $: 'jquery',
      jQuery: 'jquery',
      "window.jQuery": 'jquery'
    }),
    ...
    ]

While I am relatively new to Ng2 myself, I believe that importing angular/core in vendor.ts prompts Webpack to incorporate that module into the final bundle. Then, in your code, you can import specific parts of the module like

import { NgModule } from '@angular/core';
- enabling you to utilize NgModule in your application.

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