Learn the best practices for incorporating jQuery and other JavaScript libraries in your Angular2 projects

Question

Learn the best practices for incorporating jQuery and other JavaScript libraries in your Angular2 projects

Is it possible to integrate a demo showcasing Bootstrap carousel with CSS3 animations in Angular2 using HTML, CSS, and JS? I have created my own implementation in Plunker with Angular2, but I am facing issues with the animated inner content of the carousel. Additionally, I would like guidance on incorporating jQuery and other JS libraries into an Angular2 project.

index.html

<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
    <script src="//code.jquery.com/jquery-1.10.2.js"></script>

    <!-- More script imports here -->

   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
   <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>

    <!-- Demo scripts -->
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">

    <!-- Animate.css library -->
    <link href="css/animate.min.css" rel="stylesheet">


    <link href="css/demo.css" rel="stylesheet">
    <script src="js/demo.js"></script>

demo.js

/* Demo Scripts for Bootstrap Carousel and Animate.css article
* on SitePoint by Maria Antonietta Perna
*/
(function( $ ) {

    //Function to animate slider captions 
    function doAnimations( elems ) {
        //Cache the animationend event in a variable
        var animEndEv = 'webkitAnimationEnd animationend';

        elems.each(function () {
            var $this = $(this),
                $animationType = $this.data('animation');
            $this.addClass($animationType).one(animEndEv, function () {
                $this.removeClass($animationType);
            });
        });
    }

    //Variables on page load 

    //Initialize carousel 
    $myCarousel.carousel();

    //Animate captions in first slide on page load 
    doAnimations($firstAnimatingElems);

    //Pause carousel  
    $myCarousel.carousel('pause');

    //Other slides to be animated on carousel slide event 
    $myCarousel.on('slide.bs.carousel', function (e) {
        var $animatingElems = $(e.relatedTarget).find("[data-animation ^= 'animated']");
        doAnimations($animatingElems);
    });  

})(jQuery);

How can we incorporate this demo.js containing jQuery code into an Angular2 application?

javascript html css animation angular

Answer 1

Answer №1

If you want to execute your jQuery code after initializing an angular2 component, you need to ensure it runs after initialization. I have made some modifications to your app.component.ts:

import {Component, OnInit} from 'angular2/core';
import {CORE_DIRECTIVES} from 'angular2/common';

declare var RunAnim;
declare var jQuery;

@Component({
    selector: 'my-app',
    templateUrl: 'mytemplate.html'
})
export class AppComponent implements OnInit {

  constructor(){

  }
  ngOnInit(){
    RunAnim(jQuery);
  }

  ngAfterContentInit() {
  }
}

/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/

The declarations of RunAnim and jQuery are for visibility in TypeScript, as they are globally available.

I've also created a named function RunAnim for your jQuery code:

/* Demo Scripts for Bootstrap Carousel and Animate.css article
* on SitePoint by Maria Antonietta Perna
*/
(window.RunAnim=function( $ ) {

    //Function to animate slider captions 
    function doAnimations( elems ) {
        //Cache the animationend event in a variable
        var animEndEv = 'webkitAnimationEnd animationend';

        elems.each(function () {
            var $this = $(this),
                $animationType = $this.data('animation');
            $this.addClass($animationType).one(animEndEv, function () {
                $this.removeClass($animationType);
            });
        });
    }

    //Variables on page load 
    var $myCarousel = $('#carousel-example-generic'),
        $firstAnimatingElems = $myCarousel.find('.item:first').find("[data-animation ^= 'animated']");

    //Initialize carousel 
    $myCarousel.carousel();

    //Animate captions in first slide on page load 
    doAnimations($firstAnimatingElems);

    //Pause carousel  
    $myCarousel.carousel('pause');


    //Other slides to be animated on carousel slide event 
    $myCarousel.on('slide.bs.carousel', function (e) {
        var $animatingElems = $(e.relatedTarget).find("[data-animation ^= 'animated']");
        doAnimations($animatingElems);
    });  

});

Answer 2

If you want to execute your jQuery code after initializing an angular2 component, you need to ensure it runs after initialization. I have made some modifications to your app.component.ts:

import {Component, OnInit} from 'angular2/core';
import {CORE_DIRECTIVES} from 'angular2/common';

declare var RunAnim;
declare var jQuery;

@Component({
    selector: 'my-app',
    templateUrl: 'mytemplate.html'
})
export class AppComponent implements OnInit {

  constructor(){

  }
  ngOnInit(){
    RunAnim(jQuery);
  }

  ngAfterContentInit() {
  }
}

/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/

The declarations of RunAnim and jQuery are for visibility in TypeScript, as they are globally available.

I've also created a named function RunAnim for your jQuery code:

/* Demo Scripts for Bootstrap Carousel and Animate.css article
* on SitePoint by Maria Antonietta Perna
*/
(window.RunAnim=function( $ ) {

    //Function to animate slider captions 
    function doAnimations( elems ) {
        //Cache the animationend event in a variable
        var animEndEv = 'webkitAnimationEnd animationend';

        elems.each(function () {
            var $this = $(this),
                $animationType = $this.data('animation');
            $this.addClass($animationType).one(animEndEv, function () {
                $this.removeClass($animationType);
            });
        });
    }

    //Variables on page load 
    var $myCarousel = $('#carousel-example-generic'),
        $firstAnimatingElems = $myCarousel.find('.item:first').find("[data-animation ^= 'animated']");

    //Initialize carousel 
    $myCarousel.carousel();

    //Animate captions in first slide on page load 
    doAnimations($firstAnimatingElems);

    //Pause carousel  
    $myCarousel.carousel('pause');


    //Other slides to be animated on carousel slide event 
    $myCarousel.on('slide.bs.carousel', function (e) {
        var $animatingElems = $(e.relatedTarget).find("[data-animation ^= 'animated']");
        doAnimations($animatingElems);
    });  

});

Learn the best practices for incorporating jQuery and other JavaScript libraries in your Angular2 projects

Answer №1

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