What are the best practices for implementing jquery owlCarousel within an Angular 4 component?

I've included my 'carousel.js' file like this:

$('#owl-carousel-1').owlCarousel({...});

and in carousel.component.html, I have:

<div id="owl-carousel-1" class="owl-carousel owl-theme center-owl-nav home- 
carousel">....</div>

In my carousel.component.ts file, I'm calling the 'carousel.js' file like this:

ngAfterViewInit(){
  require("../../../assets/js/carousel.js");
}

It works at first but then stops working again! Any suggestions on how to fix this issue would be greatly appreciated. Thank you!

Answer №1

To incorporate owl carousel in an Angular project based on npm, follow the steps below:
Step 1: Install npm module

npm install --save owl.carousel

npm install jquery

Step 2: Include JavaScript files in the angular-cli.json scripts section and declare them.

  "styles": [
    "styles.css",
    "../node_modules/owl.carousel/dist/assets/owl.carousel.min.css",
    "../node_modules/owl.carousel/dist/assets/owl.theme.default.min.css"
  ],
  "scripts": [
    "../node_modules/jquery/dist/jquery.min.js",
    "../node_modules/owl.carousel/dist/owl.carousel.min.js"
  ],

Step 3: Add HTML CODE

<div class="owl-carousel" #carousel>
  <div> Your Content 1 </div>
  <div> Your Content 2 </div>
  <div> Your Content 3 </div>
  <div> Your Content 4 </div>
  <div> Your Content 5 </div>
  <div> Your Content 6 </div>
  <div> Your Content 7 </div>
</div>

For Jquery integration

declare var $: any;

Then utilize .owlCarousel({...} to apply owlCarousel.

Step 4: Update Component.ts

import { Component, AfterContentInit, ViewChild, ElementRef } from '@angular/core';
declare var $: any;

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

  @ViewChild('carousel') el:ElementRef;
  ngAfterContentInit(): void {
    console.log(this.el);
    $(this.el.nativeElement).owlCarousel();
  }
}

Visit the Github Link for a functional example.

Answer №2

Check out my code snippet...

index.component.html

<div #carousel id="owl-carousel-1" class="owl-carousel owl-theme center-owl-nav home-carousel">

<article *ngFor="let sliderPost of allMainSliderPosts; let i = index;" class="article thumb-article">

    <div class="article-img">
        <img [src]="defaultImgPath + sliderPost.img" alt="{{commService.limitString(sliderPost.title, 105)}}">
    </div>

    <div class="article-body">
        <ul class="article-info">
            <li class="article-category">
                <a href="javascript:;">{{sliderPost.category_name}}</a>
            </li>
            <li class="article-type">
                <i *ngIf="sliderPost.post_type === 'videos' || sliderPost.post_type === 'photos-library'" class="fa fa-camera"></i>
                <i *ngIf="sliderPost.post_type === 'posts'" class="fa fa-file-text"></i>
            </li>
        </ul>
        <h2 class="article-title">
            <a routerLink="/p/{{sliderPost.slug}}">
                {{commService.limitString(sliderPost.title, 80)}}
            </a>
        </h2>

    </div>
</article>

index.component.ts

import { Component, OnInit, AfterViewInit, AfterContentInit, ViewChild, ElementRef } from '@angular/core';

declare var $: any;
....
export class IndexComponent implements OnInit, AfterViewInit {
@ViewChild('carousel') el: ElementRef;
....
ngAfterViewInit(): void {
    $(this.el.nativeElement).owlCarousel(
    {
    loop: true,
    margin: 0,
    dots: false,
    nav: true,
    rtl: true,
    navText: ['<i class="fa fa-angle-left"></i>', '<i class="fa fa-angle-right"></i>'],
    autoplay: true,
    responsive: {
      0: {
        items: 1
      },
      992: {
        items: 2
      },
    }
  }
  );
}

}

Unfortunately, the issue persists...any suggestions?

Answer №3

When initializing data services from a database in the ngOnIntIt() method, consider using the "resolve service" method in routing instead. This allows all metadata to be retrieved before the component is initiated, ensuring that the necessary data is readily available.

Answer №4

My go-to solution that has worked well for me is:

  1. Start by creating a method to initiate your Owl Carousel in Jquery

    carousel() {
       /* carousel code */
    }

  2. Next, utilize setTimeout with setTimeout(carousel, 5000). This will trigger the function after a 5-second delay, but feel free to adjust the timing as needed for optimal performance

  3. Choose where to place the setTimeout based on your specific scenario:

    • If you are working with local images (such as from a defined array), include it in ngOnInit,
    • For image data retrieval from a service, set the timer within the response function. This ensures your array is populated before running the jQuery script.

Cheers!

Ps: This solution is designed for compatibility with ngfor in your carousel implementation

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