What is the best method for integrating jQuery into Angular2 TypeScript projects?

Question

What is the best method for integrating jQuery into Angular2 TypeScript projects?

I am looking to enclose some jQuery code within an Angular2 directive.

To incorporate the jQuery library for Typings into my project, I utilized the following command:

typings install dt~jquery --save --global

As a result, a jquery folder now resides under the typings/global directory in my project. Furthermore, the typings.json file includes a new entry:

{
    "globalDependencies": {
        "core-js": "registry:dt/core-js#0.0.0+20160602141332",
        "jasmine": "registry:dt/jasmine#2.2.0+20160621224255",
        "node": "registry:dt/node#6.0.0+20160807145350",
        "jquery": "registry:dt/jquery#1.10.0+20160908203239"
    }
}

While developing a new Angular2 directive (subsequently imported into the app-module file), I encountered difficulty importing the jQuery library correctly. Below is the excerpt from my source file:

import {Directive} from '@angular/core';

@Directive({
    selector: "my-first-directive"
})

export class MyFirstDirective {
    constructor() {
        $(document).ready(function () {
            alert("Hello World");
        });
    }
}

Unfortunately, both $ and jQuery are inaccessible to me. What should be my next course of action?

jquery angular typescript angular2-directives typescript-typings

Answer 1

Answer №1

Start by incorporating jQuery into your project

npm install jquery

Next, include type definitions for jQuery

npm install -D @types/jquery

Finally, utilize jQuery in your component!

import * as $ from 'jquery';

You are now all set to use $!

Answer 2

Start by incorporating jQuery into your project

npm install jquery

Next, include type definitions for jQuery

npm install -D @types/jquery

Finally, utilize jQuery in your component!

import * as $ from 'jquery';

You are now all set to use $!

Answer 3

Answer №2

When using "@angular/cli", make sure to follow these steps:

npm install jquery --save

Next, install:

install: npm install @types/jquery --save-dev

Locate your file name in "angular-cli.json" at the root and add the following inside:

script:["../node_modules/jquery/dist/jquery.min.js"]

After completing these steps, everything should work smoothly.

Answer 4

When using "@angular/cli", make sure to follow these steps:

npm install jquery --save

Next, install:

install: npm install @types/jquery --save-dev

Locate your file name in "angular-cli.json" at the root and add the following inside:

script:["../node_modules/jquery/dist/jquery.min.js"]

After completing these steps, everything should work smoothly.

Answer 5

Answer №3

Utilizing jQuery in Angular

 import { OpaqueToken } from '@angular/core'
export let JQ_TOKEN = new OpaqueToken('jQuery');

Bundle of Files

export * from './jQuery.service';

Main App Module

declare let jQuery : Object;

@NgModule({
  providers: [
    { provide: TOASTR_TOKEN, useValue: toastr },
    { provide: JQ_TOKEN, useValue: jQuery },
})
export class AppModule { }

Implementing jQuery Inside Component

   import { Component, Input, ViewChild, ElementRef, Inject } from '@angular/core'
import { JQ_TOKEN } from './jQuery.service'

@Component({
  selector: 'simple-modal',
  template: `
  <div id="{{elementId}}" #modalcontainer class="modal fade" tabindex="-1">
    <div class="modal-dialog">
      <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal"><span>&times;</span></button>
          <h4 class="modal-title">{{title}}</h4>
        </div>
        <div class="modal-body" (click)="closeModal()">
          <ng-content></ng-content>
        </div>
      </div>
    </div>
  </div>
  `,
  styles: [`
    .modal-body { height: 250px; overflow-y: scroll; }
  `]
})
export class SimpleModalComponent {
  @Input() title: string;
  @Input() elementId: string;
  @Input() closeOnBodyClick: string;
  @ViewChild('modalcontainer') containerEl: ElementRef;

  constructor(@Inject(JQ_TOKEN) private $: any) {}

  closeModal() {
    if(this.closeOnBodyClick.toLocaleLowerCase() === "true") {
      this.$(this.containerEl.nativeElement).modal('hide');
    }
  }
}

Answer 6

Utilizing jQuery in Angular

 import { OpaqueToken } from '@angular/core'
export let JQ_TOKEN = new OpaqueToken('jQuery');

Bundle of Files

export * from './jQuery.service';

Main App Module

declare let jQuery : Object;

@NgModule({
  providers: [
    { provide: TOASTR_TOKEN, useValue: toastr },
    { provide: JQ_TOKEN, useValue: jQuery },
})
export class AppModule { }

Implementing jQuery Inside Component

   import { Component, Input, ViewChild, ElementRef, Inject } from '@angular/core'
import { JQ_TOKEN } from './jQuery.service'

@Component({
  selector: 'simple-modal',
  template: `
  <div id="{{elementId}}" #modalcontainer class="modal fade" tabindex="-1">
    <div class="modal-dialog">
      <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal"><span>&times;</span></button>
          <h4 class="modal-title">{{title}}</h4>
        </div>
        <div class="modal-body" (click)="closeModal()">
          <ng-content></ng-content>
        </div>
      </div>
    </div>
  </div>
  `,
  styles: [`
    .modal-body { height: 250px; overflow-y: scroll; }
  `]
})
export class SimpleModalComponent {
  @Input() title: string;
  @Input() elementId: string;
  @Input() closeOnBodyClick: string;
  @ViewChild('modalcontainer') containerEl: ElementRef;

  constructor(@Inject(JQ_TOKEN) private $: any) {}

  closeModal() {
    if(this.closeOnBodyClick.toLocaleLowerCase() === "true") {
      this.$(this.containerEl.nativeElement).modal('hide');
    }
  }
}

Answer 7

Answer №4

If you prefer, you can also include your jQuery Javascript file by adding a normal script tag in the head section of your index.html.

<html>
    <head>
        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js" />
        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.1.8/semantic.min.js" />

        ...
    </head>
    ...

Then, when you require it in a component or directive, simply define the $ variable that is necessary for jQuery functionality, as you might not have typings available for all the plugins you need:

import {Directive} from '@angular/core';

declare var $: any;

@Directive({
    selector: "my-first-directive"
})

export class MyFirstDirective {
    constructor() {
        $(document).ready(function () {
            alert("Hello World");
        });
    }
}

Answer 8

If you prefer, you can also include your jQuery Javascript file by adding a normal script tag in the head section of your index.html.

<html>
    <head>
        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js" />
        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.1.8/semantic.min.js" />

        ...
    </head>
    ...

Then, when you require it in a component or directive, simply define the $ variable that is necessary for jQuery functionality, as you might not have typings available for all the plugins you need:

import {Directive} from '@angular/core';

declare var $: any;

@Directive({
    selector: "my-first-directive"
})

export class MyFirstDirective {
    constructor() {
        $(document).ready(function () {
            alert("Hello World");
        });
    }
}

Answer 9

Answer №5

Make sure you have a typings.json file that references your jQuery typing file. After that:

Update your systemjs.config (pay attention to the map setting for jQuery)

System.config({
    defaultJSExtensions: true,
    paths: {
        // Set paths as aliases
        'npm:': 'node_modules/'
    },
    map: {
        'app':  'app',
        jquery: 'http://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js',
        material: 'npm:material-design-lite/dist/material.min.js',

        // Include angular bundles
        '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
        ....
    },
    packages: {
        app: { main: 'main', format: 'register', defaultExtension: 'js' },
        'rxjs': { defaultExtension: 'js' }
    },
});

In your component:

import $ from 'jquery';

You can now use $ in your code just like before.

Answer 10

Make sure you have a typings.json file that references your jQuery typing file. After that:

Update your systemjs.config (pay attention to the map setting for jQuery)

System.config({
    defaultJSExtensions: true,
    paths: {
        // Set paths as aliases
        'npm:': 'node_modules/'
    },
    map: {
        'app':  'app',
        jquery: 'http://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js',
        material: 'npm:material-design-lite/dist/material.min.js',

        // Include angular bundles
        '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
        ....
    },
    packages: {
        app: { main: 'main', format: 'register', defaultExtension: 'js' },
        'rxjs': { defaultExtension: 'js' }
    },
});

In your component:

import $ from 'jquery';

You can now use $ in your code just like before.

Answer 11

Answer №6

Combining jQuery with Angular 2 shouldn't pose a problem as long as the typings and dependencies for jQuery are set up correctly. When properly installed, there should be no issues using jQuery in Angular 2.

I successfully integrated jQuery into my Angular 2 project by ensuring that jQuery typings were installed to enable recognition in TypeScript.

With jQuery properly set up, I was able to utilize it like so:

jQuery(document).ready({
    ()=>{
        alert("Hello!");
    };
});

Answer 12

Combining jQuery with Angular 2 shouldn't pose a problem as long as the typings and dependencies for jQuery are set up correctly. When properly installed, there should be no issues using jQuery in Angular 2.

I successfully integrated jQuery into my Angular 2 project by ensuring that jQuery typings were installed to enable recognition in TypeScript.

With jQuery properly set up, I was able to utilize it like so:

jQuery(document).ready({
    ()=>{
        alert("Hello!");
    };
});

Answer 13

Answer №7

This particular query is a bit dated, with answers that may be unnecessarily convoluted (one user's response, in particular, seems to be filled with extraneous information). For those new to this topic, here's a simpler solution.

To begin, insert the following line of code into your index.html file:

<script src="http://code.jquery.com/jquery-3.2.1.min.js"></script>

Create a file named jQuery.Service.ts and include the following code:

import {InjectionToken} from "@angular/core";
export let jQueryToken = new InjectionToken('jQuery');

In your module file, add the jQueryToken to the list of providers:

providers:[
{
    provide: jQueryToken,
    useValue: jQuery
}]

You can now utilize @Inject(jQueryToken) to access it. For example, if you wish to incorporate it into the ExperimentComponent component:

import {Component, Inject, OnInit} from '@angular/core';
import {jQueryToken} from "./common/jquery.service";

@Component({
    selector: 'app-experiment',
    templateUrl: './experiment.component.html',
    styleUrls: ['./experiment.component.css']
})
export class ExperimentComponent implements OnInit {

    constructor(@Inject(jQueryToken) private $: any) {
        $(document).ready(function () {
            alert(' jQuery is working');
        });
    }

    ngOnInit() {
    }

}

Upon opening the ExperimentComponent, an alert message will appear confirming that jQuery is operational.

Answer 14

This particular query is a bit dated, with answers that may be unnecessarily convoluted (one user's response, in particular, seems to be filled with extraneous information). For those new to this topic, here's a simpler solution.

To begin, insert the following line of code into your index.html file:

<script src="http://code.jquery.com/jquery-3.2.1.min.js"></script>

Create a file named jQuery.Service.ts and include the following code:

import {InjectionToken} from "@angular/core";
export let jQueryToken = new InjectionToken('jQuery');

In your module file, add the jQueryToken to the list of providers:

providers:[
{
    provide: jQueryToken,
    useValue: jQuery
}]

You can now utilize @Inject(jQueryToken) to access it. For example, if you wish to incorporate it into the ExperimentComponent component:

import {Component, Inject, OnInit} from '@angular/core';
import {jQueryToken} from "./common/jquery.service";

@Component({
    selector: 'app-experiment',
    templateUrl: './experiment.component.html',
    styleUrls: ['./experiment.component.css']
})
export class ExperimentComponent implements OnInit {

    constructor(@Inject(jQueryToken) private $: any) {
        $(document).ready(function () {
            alert(' jQuery is working');
        });
    }

    ngOnInit() {
    }

}

Upon opening the ExperimentComponent, an alert message will appear confirming that jQuery is operational.

What is the best method for integrating jQuery into Angular2 TypeScript projects?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

Answer №7

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